Datasheet MAX232CPE, MAX232ECSE, MAX232EWE Specification

General Description

The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available.

These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces power dissipation to less than 5µW. The MAX225, MAX233, MAX235, and MAX245/MAX246/MAX247 use no external components and are recommended for applications where printed circuit board space is critical.

________________________Applications

Portable Computers

Low-Power Modems

Interface Translation

Battery-Powered RS-232 Systems

Multidrop RS-232 Networks

Next-Generation Device Features

♦♦

For Low-Voltage, Integrated ESD Applications

MAX3222E/MAX3232E/MAX3237E/MAX3241E/ MAX3246E: +3.0V to +5.5V, Low-Power, Up to 1Mbps, True RS-232 Transceivers Using Four

0.1µF External Capacitors (MAX3246E Available in a UCSP™ Package)

♦♦

For Low-Cost Applications

MAX221E: ±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown™

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

________________________________________________________________

Maxim Integrated Products

1

Selection Table

19-4323; Rev 16; 7/10

PART

MAX220CPE+

MAX220CSE+ MAX220CWE+ 0°C to +70°C

0°C to +70°C

TEMP RANGE PIN-PACKAGE

16 Plastic DIP 16 Narrow SO

16 Wide SO MAX220C/D 0°C to +70°C Dice* MAX220EPE+ MAX220ESE+ MAX220EWE+ -40°C to +85°C

-40°C to +85°C

-40°C to +85°C 16 Plastic DIP 16 Narrow SO 16 Wide SO

MAX220EJE -40°C to +85°C 16 CERDIP MAX220MJE -55°C to +125°C 16 CERDIP

Power No. of Nominal SHDN Rx Part Supply RS-232 No. of Cap. Value & Three- Active in Data Rate Number (V) Drivers/Rx Ext. Caps (µF) State SHDN (kbps) Features

MAX220 +5 2/2 4 0.047/0.33 No — 120 Ultra-low-power, industry-standard pinout MAX222 +5 2/2 4 0.1 Yes — 200 Low-power shutdown MAX223 (MAX213) +5 4/5 4 1.0 (0.1) Yes ✔ 120 MAX241 and receivers active in shutdown MAX225 +5 5/5 0 — Yes ✔ 120 Available in SO MAX230 (MAX200) +5 5/0 4 1.0 (0.1) Yes — 120 5 drivers with shutdown MAX231 (MAX201) +5 and 2/2 2 1.0 (0.1) No — 120 Standard +5/+12V or battery supplies;

+7.5 to +13.2 same functions as MAX232 MAX232 (MAX202) +5 2/2 4 1.0 (0.1) No — 120 (64) Industry standard MAX232A +5 2/2 4 0.1 No — 200 Higher slew rate, small caps MAX233 (MAX203) +5 2/2 0 — No — 120 No external caps MAX233A +5 2/2 0 — No — 200 No external caps, high slew rate MAX234 (MAX204) +5 4/0 4 1.0 (0.1) No — 120 Replaces 1488 MAX235 (MAX205) +5 5/5 0 — Yes — 120 No external caps MAX236 (MAX206) +5 4/3 4 1.0 (0.1) Yes — 120 Shutdown, three state MAX237 (MAX207) +5 5/3 4 1.0 (0.1) No — 120 Complements IBM PC serial port MAX238 (MAX208) +5 4/4 4 1.0 (0.1) No — 120 Replaces 1488 and 1489 MAX239 (MAX209) +5 and 3/5 2 1.0 (0.1) No — 120 Standard +5/+12V or battery supplies;

+7.5 to +13.2 single-package solution for IBM PC serial port MAX240 +5 5/5 4 1.0 Yes — 120 DIP or flatpack package MAX241 (MAX211) +5 4/5 4 1.0 (0.1) Yes — 120 Complete IBM PC serial port MAX242 +5 2/2 4 0.1 Yes ✔ 200 Separate shutdown and enable MAX243 +5 2/2 4 0.1 No — 200 Open-line detection simplifies cabling MAX244 +5 8/10 4 1.0 No — 120 High slew rate MAX245 +5 8/10 0 — Yes ✔ 120 High slew rate, int. caps, two shutdown modes MAX246 +5 8/10 0 — Yes ✔ 120 High slew rate, int. caps, three shutdown modes MAX247 +5 8/9 0 — Yes ✔ 120 High slew rate, int. caps, nine operating modes MAX248 +5 8/8 4 1.0 Yes ✔ 120 High slew rate, selective half-chip enables MAX249 +5 6/10 4 1.0 Yes ✔ 120 Available in quad flatpack package

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

+

Denotes a lead(Pb)-free/RoHS-compliant package.

*

Contact factory for dice specifications.

Ordering Information continued at end of data sheet.

AutoShutdown and UCSP are trademarks of Maxim Integrated Products, Inc.

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243

ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243

(VCC= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA= T

MIN

to T

MAX

‚ unless otherwise noted.) (Note 3)

Note 1: For the MAX220, V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V. Note 2: Input voltage measured with TOUT in high-impedance state, V

SHDN

or VCC= 0V.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

(Voltages referenced to GND.) V

CC

...........................................................................-0.3V to +6V

V+ (Note 1) ..................................................(V

CC

- 0.3V) to +14V

V- (Note 1) ..............................................................+0.3V to -14V

Input Voltages

TIN .............................................................-0.3V to (V

CC

- 0.3V)

RIN (Except MAX220)........................................................±30V

RIN (MAX220) ....................................................................±25V

TOUT (Except MAX220) (Note 2) ......................................±15V

TOUT (MAX220)..............................................................±13.2V

Output Voltages

TOUT..................................................................................±15V

ROUT........................................................-0.3V to (V

CC

+ 0.3V)

Driver/Receiver Output Short Circuited to GND.........Continuous

Continuous Power Dissipation (T

A

= +70°C) 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW 18-Pin Plastic DIP (derate 11.11mW/°C above +70°C)..889mW 20-Pin Plastic DIP (derate 8.00mW/°C above +70°C) ..440mW

16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW

16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW

18-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW

20-Pin Wide SO (derate 10.00mW/°C above +70°C)....800mW

20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW

16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW

18-Pin CERDIP (derate 10.53mW/°C above +70°C).....842mW

Operating Temperature Ranges

MAX2_ _AC_ _, MAX2_ _C_ _.............................0°C to +70°C

MAX2_ _AE_ _, MAX2_ _E_ _ ..........................-40°C to +85°C

MAX2_ _AM_ _, MAX2_ _M_ _.......................-55°C to +125°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow)

20 PDIP (P20M+1) .......................................................+225°C

All other lead(Pb)-free packages.................................+260°C

All other packages containing lead(Pb) ......................+240°C

RS-232 TRANSM ITTERS

Output Voltage Swing All transmitter output s loaded with 3k to GND ±5 ±8 V

Input Logic-Low Voltage 1.4 0.8 V

Input Logic-High Voltage

Logic Pullup/lnput Current

Output Leakage Current

Data Rate 200 116 kbps

Transm itter Output Resi stance VCC = V+ = V- = 0V, V

Output Short-Circuit Current V

RS-232 RECEI VERS

RS-232 Input Voltage Operating Range

RS-232 Input Threshold Low VCC = +5V

RS-232 Input Thresho ld High VCC = +5V

PARAMETER CONDITIONS MIN TYP MAX UNITS

All devices except MAX220 2 1.4

MAX220: V

Al l except MAX220, normal operation 5 40

V

SHDN

MAX220

VCC = +5.5V, V MAX222/MAX242

V

= V

CC

= 0V

OUT

= +5.0V 2.4

CC

= 0V, MAX222/MAX242, shutdown,

SHDN

= 0V

SHDN

= 0V, V

V

OUT

MAX220, V

OUT

V

OUT

MAX220 ±60

±30

MAX220 ±25

All except MAX243 R2IN 0.8 1.3

MAX243 R2IN (Note 4) -3

All except MAX243 R2IN 1.8 2.4

MAX243 R2IN (Note 4) -0.5 -0.1

= ±15V,

OUT

= ±15V ±0.01 ±10

= ±12V ±25

OUT

= ±2V 300 10M 

= 0V ±7 ±22

±0.01 ±1

±0.01 ±10

V

μA

mA

V

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)

(VCC= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA= T

MIN

to T

MAX

‚ unless otherwise noted.) (Note 3)

PARAMETER CONDITIONS MIN TYP MAX UNITS

All except MAX220/MAX243, VCC = +5V, no

RS-232 Input H ysteresis

RS-232 Input Res istance TA = +25°C (MAX220)

TTL/CMOS Output Voltage Low

TTL/CMOS Output Voltage High I

TTL/CMOS Output Short-Circuit Current

TTL/CMOS Output Leakage Current

EN Input Threshold Low MAX242 1.4 0.8 V

EN Input Threshold High MAX242 2.0 1.4 V

Supply Voltage Range 4.5 5.5 V

VCC Supply Current (V Figures 5, 6, 11, 19

Shutdown Supply Current

SHDN Input Leakage Current MAX222/MAX242 ±1 μA SHDN Threshold Low MAX222/MAX242 1.4 0.8 V SHDN Threshold High MAX222/MAX242 2.0 1.4 V

Transition Slew Rate

Transm itter Propagation Delay TLL to RS-232 (Normal Operation)

SHDN

= VCC),

hysteresis in shutdown

MAX220 0.3

MAX243 1

I

= 3.2mA 0.2 0.4

OUT

= 1.6mA (MAX220) 0.4

I

OUT

= -1.0mA 3.5 VCC - 0.2 V

OUT

Sourcing V

Sinking V

V

= VCC or VEN = VCC (V

SHDN

MAX222), 0V  V

No load

3k load both inputs

MAX222/ MAX242

C

= 50pF to 2500pF,

L

= 3k to 7k,

R

L

V

= +5V, TA =

CC

+25°C, measured from +3V to -3V or

-3V to +3V

t

, Figure 1

PHLT

, Figure 1

t

PLHT

= V

OUT

= VCC 10 30

OUT

-2 -10

GND

= 0V for

 V

OUT

MAX220 0.5 2

MAX222/MAX232A/MAX233A/ MAX242/MAX243

MAX220 12

MAX222/MAX232A/MAX233A/ MAX242/MAX243

TA = +25°C 0.1 10

TA = 0°C to +70°C 2 50

TA = -40°C to +85°C 2 50

T

= -55°C to +125°C 35 100

A

MAX222/MAX232A/ MAX233/MAX242/MAX243

MAX220 1.5 3 30.0

MAX222/MAX232A/ MAX233/MAX242/MAX243

MAX220 4 10

MAX222/MAX232A/ MAX233/MAX242/MAX243

MAX220 5 10

SHDN

CC

0.2 0.5 1.0

3 5 7

±0.05 ±10 μA

4 10

15

6 12 30

1.3 3.5

1.5 3.5

V

k

V

mA

μA

V/μs

μs

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

4 _______________________________________________________________________________________

__________________________________________Typical Operating Characteristics

MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243

ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)

(VCC= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA= T

MIN

to T

MAX

‚ unless otherwise noted.) (Note 3)

Note 3: All units are production tested at hot. Specifications over temperature are guaranteed by design. Note 4: MAX243 R2OUT is guaranteed to be low when R2IN ≥ 0V or is unconnected.

PARAMETER CONDITIONS MIN TYP MA X UNITS

MAX222/MAX232A/MAX233/ MAX242/MAX243

MAX220 0.6 3

MAX222/MAX232A/MAX233/ MAX242/MAX243

Receiver Propagation Delay RS-232 to TLL (Normal Operation)

t

PHLR

t

PLHR

, Figure 2

MAX220 0.8 3

t

, Figure 2 MAX242 0.5 10

Receiver Propagation Delay RS-232 to TLL (Shutdown)

PHLS

, Figure 2 MAX242 2.5 10

t

PHLS

Receiver-Output Enable Time tER MAX242, Figure 3 125 500 ns

Receiver-Output Disable Time tDR MAX242, Figure 3 160 500 ns

Transm itter-Output Enable Time (SHDN Goes High)

Transm itter-Output Di sable Time (SHDN Goes Low)

Transm itter + to - Propagation Dela y Difference (Normal Operation)

t

ET

t

DT

t

PHLT

- t

PLHT

MAX222/MAX242, 0.1μF caps ( includes charge-pump start-up), Figure 4

MAX222/MAX242,

0.1μF caps, Figure 4

MAX222/MAX232A/MAX233/ MAX242/MAX243

MAX220 2000

Receiver + to - Propagation Delay Difference (Normal Operation)

t

PHLR

- t

PLHR

MAX222/MAX232A/MAX233/ MAX242/MAX243

MAX220 225

0.5 1

0.6 1

250 μs

600 ns

300

100

μs

ns

AVAILABLE OUTPUT CURRENT

OUTPUT VOLTAGE vs. LOAD CURRENT

10

8

EITHER V+ OR V- LOADED

6

V

= +5V

CC

4

NO LOAD ON

2

TRANSMITTER OUTPUTS (EXCEPT MAX220, MAX233A)

0

V- LOADED, NO LOAD ON V+

-2

OUTPUT VOLTAGE (V)

-4

-6

-8

-10 0 5 15 25

0.1μF

V+ LOADED, NO LOAD ON V-

10

LOAD CURRENT (mA)

1μF

0.1μF

1μF

20

11

MAX220-01

10

9

8

7

OUTPUT CURRENT (mA)

6

5

4

010 40 60

vs. DATA RATE

ALL CAPS 1μF

ALL CAPS

0.1μF

20 30 50

DATA RATE (kb/s)

OUTPUT LOAD CURRENT FLOWS FROM V+ TO V-

VCC = +5.25V

VCC = +4.75V

+10V

MAX220-02

+5V +5V

0V

V+, V- VOLTAGE (V)

-10V

V+

MAX222/MAX242

ON-TIME EXITING SHUTDOWN

1μF CAPS

0.1μF CAPS

SHDN

1μF CAPS

V-

0.1μF CAPS

500μs/div

V+

V-

MAX220-03

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

_______________________________________________________________________________________ 5

(Voltages referenced to GND.) V

CC

...........................................................................-0.3V to +6V

V+ ................................................................(V

CC

- 0.3V) to +14V

V- ............................................................................+0.3V to -14V

Input Voltages

TIN ............................................................-0.3V to (V

CC

+ 0.3V)

RIN .....................................................................................±30V

Output Voltages

TOUT ..................................................(V+ + 0.3V) to (V- - 0.3V)

ROUT........................................................-0.3V to (V

CC

+ 0.3V)

Short-Circuit Duration, TOUT to GND ........................Continuous

Continuous Power Dissipation (T

A

= +70°C)

14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)....800mW

16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW

20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW

24-Pin Narrow Plastic DIP

(derate 13.33mW/°C above +70°C) ..........1.07W

24-Pin Plastic DIP (derate 9.09mW/°C above +70°C)......500mW

16-Pin Wide SO (derate 9.52mW/°C above +70°C).........762mW

20-Pin Wide SO (derate 10.00mW/°C above +70°C).......800mW

24-Pin Wide SO (derate 11.76mW/°C above +70°C).......941mW

28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1W

44-Pin Plastic FP (derate 11.11mW/°C above +70°C) .....889mW

14-Pin CERDIP (derate 9.09mW/°C above +70°C) ..........727mW

16-Pin CERDIP (derate 10.00mW/°C above +70°C) ........800mW

20-Pin CERDIP (derate 11.11mW/°C above +70°C) ........889mW

24-Pin Narrow CERDIP

(derate 12.50mW/°C above +70°C) ..............1W

24-Pin Sidebraze (derate 20.0mW/°C above +70°C)..........1.6W

28-Pin SSOP (derate 9.52mW/°C above +70°C).............762mW

Operating Temperature Ranges

MAX2 _ _ C _ _......................................................0°C to +70°C

MAX2 _ _ E _ _ ...................................................-40°C to +85°C

MAX2 _ _ M _ _......................................................-55°C to +125°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow)

20 PDIP (P20M+1) .........................................................+225°C

24 PDIP (P24M-1) ..........................................................+225°C

All other lead(Pb)-free packages...................................+260°C

All other packages containing lead(Pb) ...........................+240°C

ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241

ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241

(MAX223/230/232/234/236/237/238/240/241, VCC= +5V ±10%; MAX233/MAX235, VCC= +5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239, V

CC

= +5V ±10%; V+ = +7.5V to +13.2V; TA= T

MIN

to T

MAX

; unless otherwise noted.) (Note 5)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

CONDITIONS

MIN TYP MAX

UNITS

Output Voltage Swing All transmitter outputs loaded with 3kΩ to ground ±5.0 ±7.3 V

VCCSupply Current

No load, T

A

= +25°C

510

mA

715

0.4 1

V+ Supply Current

1.8 5 mA

515

Shutdown Supply Current TA= +25°C

15 50

VInput Logic-High Voltage

TIN 2.0

EN, SHDN (MAX223); EN, SHDN (MAX230/235/236/240/241)

2.4

Logic Pullup Current V

TIN

=0V 1.5 200

Receiver Input Voltage Operating Range

-30 +30 V

µA

110

VInput Logic-Low Voltage

TIN, EN, SHDN (MAX233); EN, SHDN (MAX230/235–241)

0.8

MAX231/239

MAX223/230/234–238/240/241

MAX232/233

PARAMETER

MAX239

MAX230/235/236/240/241

MAX231

MAX223

mA

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

6 _______________________________________________________________________________________

V

0.8 1.2

PARAMETER MIN TYP MAX UNITSCONDITIONS

Normal operation

V

SHDN

= 5V (MAX223)

V

SHDN

= 0V (MAX235/236/240/241)

1.7 2.4

RS-232 Input Logic-Low Voltage

TA= +25°C, V

CC

= +5V

0.6 1.5

VRS-232 Input Logic-High Voltage

TA= +25°C, VCC= +5V

Shutdown (MAX223)

V

SHDN

= 0V,

VEN= +5V (R4IN‚ R5IN)

1.5 2.4

ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued)

(MAX223/230/232/234/236/237/238/240/241, VCC= +5V ±10%; MAX233/MAX235, VCC= +5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239, V

CC

= +5V ±10%; V+ = +7.5V to +13.2V; TA= T

MIN

to T

MAX

; unless otherwise noted.) (Note 5)

Shutdown (MAX223)

V

SHDN

= 0V,

VEN= +5V (R4IN, R5IN)

Normal operation

V

SHDN

= +5V (MAX223)

V

SHDN

= 0V (MAX235/236/240/241)

RS-232 Input Hysteresis VCC= +5V, no hysteresis in shutdown 0.2 0.5 1.0 V

RS-232 Input Resistance TA= +25°C, VCC= +5V 357kΩ

TTL/CMOS Output Voltage Low I

OUT

= 1.6mA (MAX231/232/233, I

OUT

= 3.2mA) 0.4 V

TTL/CMOS Output Voltage High I

OUT

= -1mA 3.5 VCC- 0.4 V

TTL/CMOS Output Leakage Current

0V ≤ R

OUT

≤ VCC; VEN= 0V (MAX223);

VEN= VCC(MAX235–241)

±0.05 ±10 µA

MAX223 600

nsReceiver Output Enable Time

Normal operation

MAX235/236/239/240/241 400

MAX223 900

nsReceiver Output Disable Time

Normal operation

MAX235/236/239/240/241 250

Normal operation 0.5 10

µs

V

SHDN

= 0V

(MAX223)

440

Propagation Delay

RS-232 IN to TTL/CMOS OUT, C

L

= 150pF

640

3 5.1 30

V/µs

MAX231/MAX232/MAX233, TA= +25°C, VCC= +5V, R

L

= 3kΩ to 7kΩ, CL= 50pF to 2500pF, measured from

+3V to -3V or -3V to +3V

430

Transmitter Output Resistance VCC= V+ = V- = 0V, V

OUT

= ±2V 300 Ω

Transmitter Output Short-Circuit Current

±10 mA

t

PHLS

t

PLHS

Transition Region Slew Rate

MAX223/MAX230/MAX234–241, TA= +25°C, VCC= +5V, R

L

= 3kΩ to 7kΩ‚ CL= 50pF to 2500pF, measured from

+3V to -3V or -3V to +3V

Note 5: All units are production tested at hot except for the MAX240, which is production tested at TA= +25°C. Specifications over

temperature are guaranteed by design.

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

_______________________________________________________________________________________

7

__________________________________________Typical Operating Characteristics

MAX223/MAX230–MAX241

TRANSMITTER OUTPUT

8.5

VOLTAGE (V

8.0

1 TRANSMITTER

(V)

OH

V

LOADED

7.5

7.0

4 TRANSMITTERS

6.5

4.5 5.5

LOADED

) vs. V

OH

2 TRANSMITTERS LOADED

5.0

VCC (V)

TRANSMITTER OUTPUT

VOLTAGE (V

-6.0

-6.5

-7.0

(V)

-7.5

OL

V

1 TRANSMITTER

-8.0 LOADED

2 TRANS-

-8.5

MITTERS LOADED

-9.0

4.5 5.5

OL

4 TRANSMITTERS LOADED

3 TRANSMITTERS LOADED

5.0

VCC (V)

) vs. V

CC

3 TRANSMITTERS LOADED

TA = +25°C C1–C4 = 1μF TRANSMITTER LOADS = 3kΩ || 2500pF

CC

TA = +25°C C1–C4 = 1μF TRANSMITTER LOADS = 3kΩ || 2500pF

MAX220-04

MAX220-07

TRANSMITTER OUTPUT VOLTAGE (VOH)

vs. LOAD CAPACITANCE AT

DIFFERENT DATA RATES

7.4

7.2

7.0

(V) V

6.8

OH

6.6

6.4

6.2

6.0

160kb/s 80kb/s 20kb/s

TA = +25°C

= +5V

V

CC

3 TRANSMITTERS LOADED

= 3kΩ

R

L

C1–C4 = 1μF

0 2500

LOAD CAPACITANCE (pF)

15001000500 2000

TRANSMITTER OUTPUT VOLTAGE (VOL)

vs. LOAD CAPACITANCE AT

DIFFERENT DATA RATES

-6.0 TA = +25°C

(V) V

-6.2

-6.4

-6.6

-6.8

OL

-7.0

-7.2

-7.4

-7.6

= +5V

V

CC

3 TRANSMITTERS LOADED

= 3kΩ

R

L

C1–C4 = 1μF

160kb/s 80kb/s 20kb/s

0 2500

LOAD CAPACITANCE (pF)

15001000500 2000

V+, V- WHEN EXITING SHUTDOWN

(1μF CAPACITORS)

MAX220-13

MAX220-05

MAX220-08

12.0

11.0

10.0

9.0

8.0

7.0

SLEW RATE (V/μs)

6.0

5.0

4.0

10

8

6

4

2

0

V+, V- (V)

-2

-4

-6

-8

-10

TRANSMITTER SLEW RATE

vs. LOAD CAPACITANCE

1 TRANSMITTER LOADED

3 TRANSMITTERS LOADED

0 2500

4 TRANSMITTERS LOADED

LOAD CAPACITANCE (pF)

TA = +25°C

= +5V

V

CC

LOADED, R C1–C4 = 1μF

2 TRANSMITTERS LOADED

15001000500 2000

= 3kΩ

L

TRANSMITTER OUTPUT VOLTAGE (V+, V-)

vs. LOAD CURRENT

TA = +25°C

= +5V

V

CC

C1–C4 = 1μF

V+ AND VEQUALLY LOADED

0 5 10 15 20 25 30 35 40 45 50

V- LOADED, NO LOAD ON V+

ALL TRANSMITTERS UNLOADED

CURRENT (mA)

V+ LOADED, NO LOAD ON V-

MAX220-06

MAX220-09

V+

O

V-

V

*

SHDN

500ms/div

*SHUTDOWN POLARITY IS REVERSED FOR NON MAX241 PARTS

Input Logic-Low Voltage

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

8 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249

ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249

(MAX225, VCC= +5.0V ±5%; MAX244–MAX249, VCC= +5.0V ±10%, external capacitors C1–C4 = 1µF; TA= T

MIN

to T

MAX

; unless

otherwise noted.) (Note 7)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

(Voltages referenced to GND.) Supply Voltage (V

CC

) ...............................................-0.3V to +6V

Input Voltages

TIN‚ ENA, ENB, ENR, ENT, ENRA,

ENRB, ENTA, ENTB..................................-0.3V to (V

CC

+ 0.3V)

RIN .....................................................................................±25V

TOUT (Note 6)....................................................................±15V

ROUT........................................................-0.3V to (V

CC

+ 0.3V)

Short Circuit Duration (one output at a time)

TOUT to GND ...........................................................Continuous

ROUT to GND...........................................................Continuous

Continuous Power Dissipation (T

A

= +70°C)

28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1W

40-Pin Plastic DIP (derate 11.11mW/°C above +70°C) ...611mW

44-Pin PLCC (derate 13.33mW/°C above +70°C) ...........1.07W

Operating Temperature Ranges

MAX225C_ _, MAX24_C_ _ ..................................0°C to +70°C

MAX225E_ _, MAX24_E_ _ ...............................-40°C to +85°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering,10s)) .................................+300°C

Soldering Temperature (reflow)

40 PDIP (P40M-2) ..........................................................+225°C

All other lead(Pb)-free packages...................................+260°C

All other packages containing lead(Pb) ........................+240°C

VCC= 0V, V

OUT

= ±15V

µATables 1a–1d

±0.01 ±25

Normal operation

Shutdown

Tables 1a–1d, normal operation

All transmitter outputs loaded with 3kΩ to GND

V

ENA

, V

ENB

, V

ENT

, V

ENTA

,

V

ENTB

= V

CC,VOUT

= ±15V

VRS-232 Input Hysteresis

RS-232 Input Logic-Low Voltage V

V±5 ±7.5Output Voltage Swing

Output Leakage Current (Shutdown)

±0.01 ±25

Ω300 10MVCC= V+ = V- = 0V, V

OUT

= ±2V (Note 8)Transmitter Output Resistance

µA

PARAMETER

±0.05 ±0.10

MIN TYP MAX UNITS

Normal operation, outputs disabled, Tables 1a–1d, 0V ≤ V

OUT

≤ VCC, V

ENR_

= V

CC

TTL/CMOS Output Leakage Current

10 30Sinking V

OUT

= V

CC

mA

-2 -10Sourcing V

OUT

= V

GND

V3.5 VCC- 0.2I

OUT

= -1.0mATTL/CMOS Output Voltage High

V0.2 0.4I

OUT

= 3.2mATTL/CMOS Output Voltage Low

kΩ357

0.2 0.5 1.0VCC= +5V

1.4 0.8 V

TTL/CMOS Output Short-Circuit Current

V1.8 2.4

0.8 1.3VCC= +5V

RS-232 Input Resistance

V±25RS-232 Input Voltage Operating Range

mA±7 ±30V

OUT

= 0VOutput Short-Circuit Current

kbps120 64Data Rate

CONDITIONS

VCC= +5V

µA

±0.01 ±1

Logic Pullup/lnput Current

10 50

Tables 1a–1d

RS-232 Input Logic-High Voltage

V2 1.4Input Logic-High Voltage

RS-232 TRANSMITTERS

RS-232 RECEIVERS

Note 6: Input voltage measured with transmitter output in a high-impedance state, shutdown, or VCC= 0V.

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

_______________________________________________________________________________________ 9

Supply Voltage Range

4.75 5.25 V

Transmitter Enable Time

MAX225 10 20

t

ET

No load

MAX244–MAX249 11 30

51030

MAX225 40

VCCSupply Current (Normal Operation)

3kΩ loads on all outputs

MAX244–MAX249 57

mA

Transition Slew Rate

825

CL= 50pF to 2500pF, RL= 3kΩ to 7kΩ, VCC= +5V, TA= +25°C, measured from +3V to -3V or -3V to +3V

TA= T

MIN

to T

MAX

CONDITIONS

50

V/µs

MAX246–MAX249

(excludes charge-pump startup)

Shutdown Supply Current µA

5

t

PHLT

, Figure 1 1.3 3.5

µs

t

PLHT

, Figure 1 1.5 3.5

Transmitter Disable Time

Transmitter Propagation Delay TLL to RS-232 (Normal Operation)

µs

tDT, Figure 4 100 ns

Transmitter + to - Propagation Delay Difference (Normal Operation)

t

PHLT

- t

PLHT

UNITSMIN TYP MAX

350

PARAMETER

ns

Receiver + to - Propagation Delay Difference (Normal Operation)

t

PHLR

- t

PLHR

350 ns

4.5 5.5MAX244–MAX249

MAX225

Leakage current ±1

Logic-low voltage 1.4 0.8

Control Input

Logic-high voltage 2.4 1.4

V

µA

TA= +25°C

t

PHLR

, Figure 2 0.6 1.5

t

PLHR

, Figure 2 0.6 1.5

Receiver Propagation Delay TLL to RS-232 (Normal Operation)

µs

t

PHLS

, Figure 2 0.6 10

t

PLHS

, Figure 2 3.0 10

Receiver Propagation Delay TLL to RS-232 (Low-Power Mode)

µs

Receiver-Output Enable Time tER, Figure 3 100 500 ns

Receiver-Output Disable Time tDR, Figure 3 100 500 ns

MAX225/MAX245–MAX249

(includes charge-pump startup)

10 ms

POWER SUPPLY AND CONTROL LOGIC

AC CHARACTERISTICS

Note 7: All units production tested at hot. Specifications over temperature are guaranteed by design. Note 8: The 300Ω minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or V

CC

=

0V is 10MΩ as is implied by the leakage specification.

ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued)

(MAX225, VCC= +5.0V ±5%; MAX244–MAX249, VCC= +5.0V ±10%, external capacitors C1–C4 = 1µF; TA= T

MIN

to T

MAX

; unless

otherwise noted.) (Note 7)

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

10 ______________________________________________________________________________________

__________________________________________Typical Operating Characteristics

MAX225/MAX244–MAX249

TRANSMITTER OUTPUT VOLTAGE (V+, V-)

TRANSMITTER SLEW RATE

vs. LOAD CAPACITANCE

18

16

14

12

10

8

6

TRANSMITTER SLEW RATE (V/μs)

4

2

012345

EXTERNAL POWER SUPPLY 1μF CAPACITORS

LOAD CAPACITANCE (nF)

V

= +5V

CC

40kb/s DATA RATE 8 TRANSMITTERS LOADED WITH 3kΩ

10

8

MAX220-10

6

4

2

0

-2

OUTPUT VOLTAGE (V)

-4

-6

-8

-10

OUTPUT VOLTAGE

vs. LOAD CURRENT FOR V+ AND V-

V+ AND V- LOADED

VCC = +5V EXTERNAL CHARGE PUMP 1μF CAPACITORS 8 TRANSMITTERS DRIVING 5kΩ AND 2000pF AT 20kb/s

V+ AND V- LOADED

0 5 10 15 20 25 30 35

LOAD CURRENT (mA)

EITHER V+ OR V- LOADED

V- LOADED

V+ LOADED

MAX220-11

9.0

8.5

8.0

7.5

7.0

V+, V- (V)

6.5

6.0

5.5

5.0

vs. LOAD CAPACITANCE AT

DIFFERENT DATA RATES

VCC = +5V WITH ALL TRANSMITTERS DRIVEN

200kb/s

ALL CAPACITIORS 1μF

01

LOAD CAPACITANCE (nF)

LOADED WITH 5kΩ

100kb/s

2

345

10kb/s 20kb/s

40kb/s

60kb/s

MAX220-12

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 11

Figure 1. Transmitter Propagation-Delay Timing

Figure 2. Receiver Propagation-Delay Timing

Figure 3. Receiver-Output Enable and Disable Timing

Figure 4. Transmitter-Output Disable Timing

Test Circuits/Timing Diagrams

+3V

INPUT

OUTPUT

t

PLHT

0V

EN

R

IN

X

a) TEST CIRCUIT

EN INPUT

RECEIVER OUTPUTS

b) ENABLE TIMING

+3V

R

X

1kΩ

OUT

R

X

150pF

0V

OUTPUT ENABLE TIME (t

+3.5V

+0.8V

t

PHLT

+3V

0V*

INPUT

OUTPUT

V+

0V V-

t

PHLR

t

PHLS

*EXCEPT FOR R2 ON THE MAX243 WHERE -3V IS USED.

50%

GND

t t

PLHR PLHS

V

CC

V

- 2V

CC

EN

)

ER

SHDN

a) TIMING DIAGRAM

+3V

0V

OUTPUT DISABLE TIME (t

V+

V-

+5V

-5V

)

DT

0V

EN INPUT

V

OH

RECEIVER OUTPUTS

V

OL

c) DISABLE TIMING

+3V

0V

OUTPUT DISABLE TIME (t

VOH - 0.5V

VOL + 0.5V

EN

V

- 2V

CC

1 OR 0

)

DR

b) TEST CIRCUIT

T

X

3kΩ

50pF

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

12 ______________________________________________________________________________________

ENT ENR

OPERATION STATUS TRANSMITTERS RECEIVERS

0 0 Normal Operation All Active All Active

0 1 Normal Operation All Active All High-Z

1 0 Shutdown All High-Z All Low-Power Receive Mode

1 1 Shutdown All High-Z All High-Z

Table 1a. MAX245 Control Pin Configurations

ENT ENR

OPERATION

STATUS

TRANSMITTERS RECEIVERS

TA1–TA4 TB1–TB4 RA1–RA5 RB1–RB5

0 0 Normal Operation All Active All Active All Active All Active

0 1 Normal Operation All Active All Active

RA1–RA4 High-Z, RA5 Active

RB1–RB4 High-Z, RB5 Active

1 0 Shutdown All High-Z All High-Z

All Low-Power Receive Mode

1 1 Shutdown All High-Z All High-Z

RA1–RA4 High-Z, RA5 Low-Power Receive Mode

RB1–RB4 High-Z, RB5 Low-Power Receive Mode

Table 1b. MAX245 Control Pin Configurations

Table 1c. MAX246 Control Pin Configurations

ENA ENB

OPERATION

STATUS

TRANSMITTERS RECEIVERS

TA1–TA4 TB1–TB4 RA1–RA5 RB1–RB5

0 0 Normal Operation All Active All Active All Active All Active

0 1 Normal Operation All Active All High-Z All Active

RB1–RB4 High-Z, RB5 Active

1 0 Shutdown All High-Z All Active

RA1–RA4 High-Z, RA5 Active

All Active

1 1 Shutdown All High-Z All High-Z

RA1–RA4 High-Z, RA5 Low-Power Receive Mode

RB1–RB4 High-Z, RA5 Low-Power Receive Mode

Control Pin Configuration Tables

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 13

TA1–TA4 TB1–TB4 RA1–RA4 RB1–RB4

0 0 0 0 Normal Operation All Active All Active All Active All Active

0 0 0 1 Normal Operation All Active All Active All Active

All High-Z, except RB5 stays active on MAX247

0 0 1 0 Normal Operation All Active All Active All High-Z All Active

0 0 1 1 Normal Operation All Active All Active All High-Z

All High-Z, except RB5 stays active on MAX247

0 1 0 0 Normal Operation All Active All High-Z All Active All Active

0 1 0 1 Normal Operation All Active All High-Z All Active

All High-Z, except RB5 stays active on MAX247

0 1 1 0 Normal Operation All Active All High-Z All High-Z All Active

0 1 1 1 Normal Operation All Active All High-Z All High-Z

All High-Z, except RB5 stays active on MAX247

1 0 0 0 Normal Operation All High-Z All Active All Active All Active

1 0 0 1 Normal Operation All High-Z All Active All Active

All High-Z, except RB5 stays active on MAX247

1 0 1 0 Normal Operation All High-Z All Active All High-Z All Active

1 0 1 1 Normal Operation All High-Z All Active All High-Z

All High-Z, except RB5 stays active on MAX247

1 1 0 0 Shutdown All High-Z All High-Z

Low-Power Receive Mode

1 1 0 1 Shutdown All High-Z All High-Z

Low-Power Receive Mode

All High-Z, except RB5 stays active on MAX247

1 1 1 0 Shutdown All High-Z All High-Z All High-Z

Low-Power Receive Mode

1 1 1 1 Shutdown All High-Z All High-Z All High-Z

All High-Z, except RB5 stays active on MAX247

Table 1d. MAX247/MAX248/MAX249 Control Pin Configurations

MAX248

OPERATION

STATUS

ENRB

MAX247 TA1–TA4 TB1–TB4 RA1–RA4 RB1–RB5

TRANSMITTERS

ENRAENTBENTA

MAX249 TA1–TA3 TB1–TB3 RA1–RA5 RB1–RB5

RECEIVERS

MAX220–MAX249

_______________Detailed Description

The MAX220–MAX249 contain four sections: dual charge-pump DC-DC voltage converters, RS-232 drivers, RS-232 receivers, and receiver and transmitter enable control inputs.

Dual Charge-Pump Voltage Converter

The MAX220–MAX249 have two internal charge-pumps that convert +5V to ±10V (unloaded) for RS-232 driver operation. The first converter uses capacitor C1 to double the +5V input to +10V on C3 at the V+ output. The second converter uses capacitor C2 to invert +10V to

-10V on C4 at the V- output.

A small amount of power may be drawn from the +10V (V+) and -10V (V-) outputs to power external circuitry (see the

Typical Operating Characteristics

section), except on the MAX225 and MAX245–MAX247, where these pins are not available. V+ and V- are not regulated, so the output voltage drops with increasing load current. Do not load V+ and V- to a point that violates the minimum ±5V EIA/TIA-232E driver output voltage when sourcing current from V+ and V- to external circuitry.

When using the shutdown feature in the MAX222, MAX225, MAX230, MAX235, MAX236, MAX240, MAX241, and MAX245–MAX249, avoid using V+ and Vto power external circuitry. When these parts are shut down, V- falls to 0V, and V+ falls to +5V. For applications where a +10V external supply is applied to the V+ pin (instead of using the internal charge pump to generate +10V), the C1 capacitor must not be installed and the SHDN pin must be connected to VCC. This is because V+ is internally connected to VCCin shutdown mode.

RS-232 Drivers

The typical driver output voltage swing is ±8V when loaded with a nominal 5kΩ RS-232 receiver and VCC= +5V. Output swing is guaranteed to meet the EIA/TIA232E and V.28 specification, which calls for ±5V minimum driver output levels under worst-case conditions. These include a minimum 3kΩ load, VCC= +4.5V, and maximum operating temperature. Unloaded driver output voltage ranges from (V+ -1.3V) to (V- +0.5V).

Input thresholds are both TTL and CMOS compatible. The inputs of unused drivers can be left unconnected since 400kΩ input pullup resistors to VCCare built in (except for the MAX220). The pullup resistors force the outputs of unused drivers low because all drivers invert. The internal input pullup resistors typically source 12µA, except in shutdown mode where the pullups are disabled. Driver outputs turn off and enter a high-impedance state—where leakage current is typically microamperes (maximum 25µA)—when in shutdown

mode, in three-state mode, or when device power is removed. Outputs can be driven to ±15V. The powersupply current typically drops to 8µA in shutdown mode. The MAX220 does not have pullup resistors to force the outputs of the unused drivers low. Connect unused inputs to GND or VCC.

The MAX239 has a receiver three-state control line, and the MAX223, MAX225, MAX235, MAX236, MAX240, and MAX241 have both a receiver three-state control line and a low-power shutdown control. Table 2 shows the effects of the shutdown control and receiver threestate control on the receiver outputs.

The receiver TTL/CMOS outputs are in a high-impedance, three-state mode whenever the three-state enable line is high (for the MAX225/MAX235/MAX236/MAX239– MAX241), and are also high-impedance whenever the shutdown control line is high.

When in low-power shutdown mode, the driver outputs are turned off and their leakage current is less than 1µA with the driver output pulled to ground. The driver output leakage remains less than 1µA, even if the transmitter output is backdriven between 0V and (VCC+ 6V). Below

-0.5V, the transmitter is diode clamped to ground with 1kΩ series impedance. The transmitter is also zener clamped to approximately VCC+ 6V, with a series impedance of 1kΩ.

The driver output slew rate is limited to less than 30V/µs as required by the EIA/TIA-232E and V.28 specifications. Typical slew rates are 24V/µs unloaded and 10V/µs loaded with 3Ω and 2500pF.

RS-232 Receivers

EIA/TIA-232E and V.28 specifications define a voltage level greater than 3V as a logic 0, so all receivers invert. Input thresholds are set at 0.8V and 2.4V, so receivers respond to TTL level inputs as well as EIA/TIA-232E and V.28 levels.

The receiver inputs withstand an input overvoltage up to ±25V and provide input terminating resistors with

+5V-Powered, Multichannel RS-232 Drivers/Receivers

14 ______________________________________________________________________________________

PART

SHDN

EN EN(R) RECEIVERS

MAX223 __

Low High High

X Low High

High Impedance Active High Impedance

MAX225 __ __

High Impedance Active

__

MAX235 MAX236 MAX240

Low Low High

__ __

Low High X

High Impedance Active High Impedance

Table 2. Three-State Control of Receivers

Low High

SHDN

__

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 15

nominal 5kΩ values. The receivers implement Type 1 interpretation of the fault conditions of V.28 and EIA/TIA-232E.

The receiver input hysteresis is typically 0.5V with a guaranteed minimum of 0.2V. This produces clear output transitions with slow-moving input signals, even with moderate amounts of noise and ringing. The receiver propagation delay is typically 600ns and is independent of input swing direction.

Low-Power Receive Mode

The low-power receive mode feature of the MAX223, MAX242, and MAX245–MAX249 puts the IC into shutdown mode but still allows it to receive information. This is important for applications where systems are periodically awakened to look for activity. Using low-power receive mode, the system can still receive a signal that will activate it on command and prepare it for communication at faster data rates. This operation conserves system power.

Negative Threshold—MAX243

The MAX243 is pin compatible with the MAX232A, differing only in that RS-232 cable fault protection is removed on one of the two receiver inputs. This means that control lines such as CTS and RTS can either be driven or left unconnected without interrupting communication. Different cables are not needed to interface with different pieces of equipment.

The input threshold of the receiver without cable fault protection is -0.8V rather than +1.4V. Its output goes positive only if the input is connected to a control line that is actively driven negative. If not driven, it defaults to the 0 or “OK to send” state. Normally‚ the MAX243’s other receiver (+1.4V threshold) is used for the data line (TD or RD)‚ while the negative threshold receiver is connected to the control line (DTR‚ DTS‚ CTS‚ RTS, etc.).

Other members of the RS-232 family implement the optional cable fault protection as specified by EIA/TIA232E specifications. This means a receiver output goes high whenever its input is driven negative‚ left unconnected‚ or shorted to ground. The high output tells the serial communications IC to stop sending data. To avoid this‚ the control lines must either be driven or connected with jumpers to an appropriate positive voltage level.

Shutdown—MAX222–MAX242

On the MAX222‚ MAX235‚ MAX236‚ MAX240‚ and MAX241‚ all receivers are disabled during shutdown. On the MAX223 and MAX242‚ two receivers continue to operate in a reduced power mode when the chip is in shutdown. Under these conditions‚ the propagation delay increases to about 2.5µs for a high-to-low input transition. When in shutdown, the receiver acts as a CMOS inverter with no hysteresis. The MAX223 and MAX242 also have a receiver output enable input (EN for the MAX242 and EN for the MAX223) that allows receiver output control independent of SHDN (SHDN for MAX241). With all other devices‚ SHDN (SHDN for MAX241) also disables the receiver outputs.

The MAX225 provides five transmitters and five receivers‚ while the MAX245 provides ten receivers and eight transmitters. Both devices have separate receiver and transmitter-enable controls. The charge pumps turn off and the devices shut down when a logic high is applied to the ENT input. In this state, the supply current drops to less than 25µA and the receivers continue to operate in a low-power receive mode. Driver outputs enter a high-impedance state (three-state mode). On the MAX225‚ all five receivers are controlled by the ENR input. On the MAX245‚ eight of the receiver outputs are controlled by the ENR input‚ while the remaining two receivers (RA5 and RB5) are always active. RA1–RA4 and RB1–RB4 are put in a three-state mode when ENR is a logic high.

Receiver and Transmitter Enable

Control Inputs

The MAX225 and MAX245–MAX249 feature transmitter and receiver enable controls.

The receivers have three modes of operation: full-speed receive (normal active)‚ three-state (disabled)‚ and lowpower receive (enabled receivers continue to function at lower data rates). The receiver enable inputs control the full-speed receive and three-state modes. The transmitters have two modes of operation: full-speed transmit (normal active) and three-state (disabled). The transmitter enable inputs also control the shutdown mode. The device enters shutdown mode when all transmitters are disabled. Enabled receivers function in the low-power receive mode when in shutdown.

MAX220–MAX249

Tables 1a–1d define the control states. The MAX244 has no control pins and is not included in these tables.

The MAX246 has ten receivers and eight drivers with two control pins, each controlling one side of the device. A logic high at the A-side control input (ENA) causes the four A-side receivers and drivers to go into a three-state mode. Similarly, the B-side control input (ENB) causes the four B-side drivers and receivers to go into a three-state mode. As in the MAX245, one Aside and one B-side receiver (RA5 and RB5) remain active at all times. The entire device is put into shutdown mode when both the A and B sides are disabled (ENA = ENB = +5V).

The MAX247 provides nine receivers and eight drivers with four control pins. The ENRA and ENRB receiver enable inputs each control four receiver outputs. The ENTA and ENTB transmitter enable inputs each control four drivers. The ninth receiver (RB5) is always active. The device enters shutdown mode with a logic high on both ENTA and ENTB.

The MAX248 provides eight receivers and eight drivers with four control pins. The ENRA and ENRB receiver enable inputs each control four receiver outputs. The ENTA and ENTB transmitter enable inputs control four drivers each. This part does not have an always-active receiver. The device enters shutdown mode and transmitters go into a three-state mode with a logic high on both ENTA and ENTB.

The MAX249 provides ten receivers and six drivers with four control pins. The ENRA and ENRB receiver enable inputs each control five receiver outputs. The ENTA and ENTB transmitter enable inputs control three drivers each. There is no always-active receiver. The device enters shutdown mode and transmitters go into a three-state mode with a logic high on both ENTA and ENTB. In shutdown mode, active receivers operate in a low-power receive mode at data rates up to 20kb/s.

__________Applications Information

Figures 5 through 25 show pin configurations and typical operating circuits. In applications that are sensitive to power-supply noise, VCCshould be decoupled to ground with a capacitor of the same value as C1 and C2 connected as close as possible to the device.

+5V-Powered, Multichannel RS-232 Drivers/Receivers

16 ______________________________________________________________________________________

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 17

Figure 5. MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit

Figure 6. MAX222/MAX242 Pin Configurations and Typical Operating Circuit

TOP VIEW

+

C1+

V+

C1-

C2+

C2-

V-

T2OUT

R2IN

DEVICE MAX220 MAX232 MAX232A

1

2

3

MAX220

4

MAX232

5

MAX232A

6

7

8

DIP/SO

CAPACITANCE (μF)

C1

C2

0.047

0.33

1.0

0.1

C3

0.33

1.0

0.1

C4

0.33

1.0

0.1

V

CC

16

GND

15

T1OUT

14

R1IN

13

R1OUT

12

T1IN

11

T2IN

10

R2OUT

9

C5

0.33

1.0

0.1

TTL/CMOS

INPUTS

TTL/CMOS

OUTPUTS

C1

C2

11

10

12

1

3 4

5

9

C1+

C1-

C2+ C2-

400kΩ

T1IN

400kΩ

T2IN

R1OUT

R2OUT

C5

+5V INPUT

16

V

CC

+5V TO +10V

VOLTAGE DOUBLER

+10V TO -10V

VOLTAGE INVERTER

+5V

GND

15

T1OUT

T2OUT

R1IN

5kΩ

R2IN

5kΩ

C3

2

+10V

V+

6

-10V

V-

C4

14

RS-232 OUTPUTS

7

13

RS-232 INPUTS

8

TOP VIEW

(N.C.) EN

C1+

C1-

C2+

C2-

T2OUT

R2IN

+

1

2

V+

3

4

MAX222

5

MAX242

6

V-

7

8

9

18

17

16

15

14

13

12

11

10

SHDN

V

CC

GND

T1OUT

R1IN

R1OUT

T1IN

T2IN

R2OUT

(N.C.) EN

T2OUT

R2OUT

DIP/SO

( ) ARE FOR MAX222 ONLY. PIN NUMBERS IN TYPICAL OPERATING CIRCUIT ARE FOR DIP/SO PACKAGES ONLY.

C1+

C1-

C2+

C2-

R2IN

+

1

2

V+

3

4

MAX222

5

MAX242

6

V-

7

8

9

10

SHDN

20

V

19

CC

GND

18

T1OUT

17

N.C.

16

R1IN

15

R1OUT

14

N.C.

13

T1IN

12

T2IN

11

SSOP

TTL/CMOS

INPUTS

TTL/CMOS

OUTPUTS

+5V INPUT

C5

2

C1+

4

C1-

VOLTAGE DOUBLER

5

C2+

6

C2-

VOLTAGE INVERTER

+5V 400kΩ T1IN

+5V

400kΩ T2IN

R1OUT

R2OUT

(N.C.)

EN

+5V TO +10V

+10V TO -10V

(EXCEPT MAX220)

GND

C1

C2

12

11

13

10

1

C3

ALL CAPACITORS = 0.1μF

17

V

CC

16

T1OUT

T2OUT

R1IN

5kΩ

R2IN

5kΩ

SHDN

3

+10V

V+

7

-10V

V-

C4

15

RS-232 OUTPUTS

8

14

RS-232 INPUTS

9

18

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

18 ______________________________________________________________________________________

Figure 7. MAX225 Pin Configuration and Typical Operating Circuit

+5V

TOP VIEW

+

ENR

1

ENR

2

T1IN

3

T2IN

4

R1OUT

R2OUT

R3OUT

R3IN

R2IN

R1IN

T1OUT

T2OUT

GND

MAX225

5

6

7

8

9

10

11

12

13

14

SO

0.1μF

28 27

V

CC

+5V

400kΩ

V

CC

28

V

27

CC

ENT

26

T3IN

25

T4IN

24

T5IN

23

R4OUT

22

R5OUT

21

R5IN

20

R4IN

19

T3OUT

18

T4OUT

17

T5OUT

16

T5OUT

15

3

4

25

24

23

26

5

6

T1IN

+5V

400kΩ

T2IN

+5V

400kΩ

T3IN

+5V

400kΩ

T4IN

+5V

400kΩ

T5IN

ENT

R1OUT

R2OUT

CC

T1OUT

T2OUT

T3OUT

T4OUT

T5OUT

R1IN

5kΩ

R2IN

5kΩ

11

12

18

17

16

15

10

9

R3IN

5kΩ

R4IN

5kΩ

R5IN

5kΩ

GND

14

MAX225 FUNCTIONAL DESCRIPTION

5 RECEIVERS 5 TRANSMITTERS 2 CONTROL PINS 1 RECEIVER ENABLE (ENR) 1 TRANSMITTER ENABLE (ENT)

PINS (ENR, GND, V CONNECT EITHER OR BOTH EXTERNALLY. T5OUT IS A SINGLE DRIVER.

, T5OUT) ARE INTERNALLY CONNECTED.

CC

7

22

21

R3OUT

R4OUT

R5OUT

ENR

1 2

ENR

GND

13

8

19

20

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 19

TOP VIEW

Figure 8. MAX223/MAX241 Pin Configuration and Typical Operating Circuit

+5V INPUT

1.0μF

T3OUT

T1OUT

T2OUT

R2IN

R2OUT

T2IN

T1IN

R1OUT

R1IN

GND

V

C1+

C1-

12

1.0μF

C1+

14

C1-

15

C2+

16

C2-

+5V

T1IN

7

+

T2IN

6

T3IN

20

T4IN

21

89R1OUT

R2OUT

5

+5V

1

2

3

4

5

MAX223

6

MAX241

7

8

9

10

11

CC

12

13

V+

14

28

T4OUT

27

R3IN

26

R3OUT

25

SHDN (SHDN)

24

EN (EN)

23

R4IN*

22

R4OUT*

21

T4IN

20

T3IN

19

R5OUT*

18

R5IN*

17

V-

16

C2-

15

C2+

TTL/CMOS

INPUTS

11

V

CC

+5V TO +10V

VOLTAGE DOUBLER

+10V TO -10V

VOLTAGE INVERTER

400kΩ

T1

400kΩ

T2

400kΩ

T3

400kΩ

T4

R1

R2

V+

V-

T1OUT

T2OUT

T3OUT

T4OUT

R1IN

5kΩ

R2IN

5kΩ

1.0μF

13

17

1.0μF

2

3

RS-232 OUTPUTS

1

28

4

Wide SO/

SSOP

LOGIC

OUTPUTS

26

R3

5kΩ

R3IN

27R3OUT

RS-232 INPUTS

*R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN.

NOTE: PIN LABELS IN ( ) ARE FOR MAX241.

R4OUT

22

R5OUT R5IN

19

24

EN (EN)

R4

R5

GND

10

5kΩ

SHDN

(SHDN)

R4IN

23

18

25

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

20 ______________________________________________________________________________________

Figure 9. MAX230 Pin Configuration and Typical Operating Circuit

V+

V-

14

C1+

C1-

1

2

8

7

3

11

4

T2IN

T1IN

T1OUT

T2OUT

+5V INPUT

RS-232 INPUTS

TTL/CMOS

OUTPUTS

GND

12 (14)

5kΩ

+12V TO -12V

VOLTAGE CONVERTER

13 (15)

1.0μF

1.0μF C2

1.0μF

400kΩ

+5V

400kΩ

+5V

6

9

10

R1IN

R2IN

R2OUT

R1OUT

5

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

V+

V

CC

GND

T1OUT

T2OUT

V-

C-

C+

MAX231

R1IN

R1OUT

T1IN

N.C.

T2IN

R2OUT

R2IN

SO

(12)

RS-232 OUTPUTS

TTL/CMOS

INPUTS

(11)

(13)(10)

V

CC

PIN NUMBERS IN ( ) ARE FOR SO PACKAGE.

14

13

12

11

10

9

8

1

2

3

4

5

6

7

V+

V

CC

GND

T1OUTT2OUT

V-

C-

C+

MAX231

R1IN

R1OUT

T1INT2IN

R2OUT

R2IN

DIP

+7.5V TO +12V

(16)

T1

T2

R1

R2

+

TOP VIEW

Figure 10. MAX231 Pin Configurations and Typical Operating Circuit

8

10

11 12

5

4

14

15

19

18

x

1.0μF

C1+ C1-

C2+

VOLTAGE INVERTER

C2-

+5V

T1IN

+5V

T2IN

+5V

T3IN

+5V

T4IN

+5V

T5IN

TOP VIEW

T2IN

T1IN

GND

V

C1+

C1-

+

1

2

3

4

MAX230

5

6

CC

7

8

V+

9

10

20

19

18

17

16

15

14

13

12

11

T3OUT T4OUT

T1OUT

T2OUT

DIP/SO

T5IN

N.C.

SHDN

T5OUT

T4IN

T3IN

V-

C2-

C2+

1.0μF

TTL/CMOS

INPUTS

N.C.

+5V INPUT

7

V

CC

+5V TO +10V

VOLTAGE DOUBLER

+10V TO -10V

400kΩ

T1

400kΩ

T2

400kΩ

T3

400kΩ

T4

400kΩ

T5

GND

6

T1OUT

T2OUT

T3OUT

T4OUT

T5OUT

1.0μF

9

V+

13

V-

1.0μF

2

3

RS-232

1

OUTPUTS

20

16

17

SHDN

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 21

Figure 11. MAX233/MAX233A Pin Configuration and Typical Operating Circuit

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

T3OUT

T4OUT

T4IN

T3IN

T1IN

T2IN

T2OUT

T1OUT

MAX234

V-

C2-

C2+

C1-

V+

C1+

V

CC

GND

DIP/SO

V+

V-

8

C1+

C1-

1.0μF

7

9

10

11

4

3

13

14

12

1

2

16

15

T1IN

T3IN

T2IN

T4IN

T1OUT

T3OUT

T2OUT

T4OUT

+5V INPUT

C2-

C2+

RS-232 OUTPUTS

TTL/CMOS

INPUTS

GND

5

+5V

+10V TO -10V

VOLTAGE INVERTER

V

CC

+5V TO +10V

VOLTAGE DOUBLER

6

+5V

400kΩ

1.0μF

T1

T2

T4

T3

+

TOP VIEW

Figure 12. MAX234 Pin Configuration and Typical Operating Circuit

TOP VIEW

+

T2IN R2OUT

1

T1IN

2

R1OUT

3

R1IN

4

T1OUT

GND

V

(V+) C1+

GND

(V-) CS-

CC

MAX233

5

MAX233A

6

7

8

9

10

DIP/SO

PIN NAMES IN ( ) ARE FOR SO PACKAGE.

20

19

18

17

16

15

14

13

12

11

R2IN

T2OUT

V-

C2-

C2+

V+ (C1-)

C1- (C1+)

V- (C2+)

C2+ (C2-)

TTL/CMOS

INPUTS

TTL/CMOS

OUTPUTS

DO NOT MAKE

CONNECTIONS TO

THESE PINS

INTERNAL -10V

POWER SUPPLY

INTERNAL +10V

POWER SUPPLY

8 (13)

13 (14)

12 (10)

14 (8)

1.0μF

+5V

T1IN

2

+5V

T2IN

1

R1OUT

3

R2OUT

20

C1+

C1-

V-

17

V-

V+

+5V INPUT

7

V

CC

400kΩ

GND GND

69

5kΩ

T1OUT

T2OUT

R1IN

R2IN

C2+

C2-

CS-

5

18

4

19

11 (12)

15

16

10 (11)

RS-232 OUTPUTS

RS-232 INPUTS

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

22 ______________________________________________________________________________________

Figure 13. MAX235 Pin Configuration and Typical Operating Circuit

TOP VIEW

T2IN

GND

+

1

2

3

4

MAX235

5

6

7

8

9

10

11

12

CC

R3IN

24

R3OUT

23

T5IN

22

SHDNT2OUT

21

EN

20

T5OUT

19

R4IN

18

R4OUTT1IN

17

16

T4IN

15

T3IN

14

R5OUT

13

R5INV

T4OUT

T3OUT

T1OUT

R2IN

R2OUT

R1OUT

R1IN

DIP

TTL/CMOS

INPUTS

TTL/CMOS

OUTPUTS

8

7

15

16

22

910

6

23

1.0μF

+5V

T1IN

+5V

T2IN

+5V

T3IN

+5V

R1OUT

R2OUT

R3OUT

+5V INPUT

400kΩ

12

V

CC

T1OUT

T2OUT

T3OUT

T4OUT

T5OUT

5kΩ

R1IN

R2IN

R3IN

3

4

2

RS-232 OUTPUTS

1T4IN

19T5IN

5

24

RS-232 INPUTS

T1

T2

T3

T4

T5

T1

R2

R3

5kΩ

R4IN

R5IN

SHDN

18

13

21

R4OUT

17

R5OUT

14

20

EN

R4

R5

GND

11

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 23

Figure 14. MAX236 Pin Configuration and Typical Operating Circuit

TOP VIEW

T3OUT

T1OUT

T2OUT

R1OUT

T2IN

T1IN

V

CC

C1+

V+

+5V INPUT

1.0μF

10

C1+

1.0μF

+

1

2

3

4

MAX236

5

6

7

8

9

10

11

12

T4OUT

24

R2IN

23

R2OUT

22

SHDNR1IN

21

20

EN

T4IN

19

T3IN

18

R3OUTGND

17

16

R3IN

15

V-

14

C2-

13

C2+C1-

TTL/CMOS

INPUTS

12

C1-

13

C2+

14

C2-

T1IN

7

T2IN

6

T3IN

18

T4IN

19

54R1OUT

VOLTAGE DOUBLER

VOLTAGE INVERTER

+5V

V

CC

+5V TO +10V

+10V TO -10V

400kΩ

T1

400kΩ

T2

400kΩ

T3

400kΩ

T4

R1

9

V+

V-

T1OUT

T2OUT

T3OUT

T4OUT

R1IN

5kΩ

1.0μF

11

15

1.0μF

2

3

RS-232 OUTPUTS

1

24

DIP/SO

TTL/CMOS

OUTPUTS

22

R2OUT

R2

5kΩ

R2IN

23

RS-232 INPUTS

R3OUT

17

20

EN

R3

GND

8

5kΩ

R3IN

SHDN

16

21

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

24 ______________________________________________________________________________________

Figure 15. MAX237 Pin Configuration and Typical Operating Circuit

TOP VIEW

+

1

T3OUT

2

T1OUT

T2OUT

R1OUT

T2IN

T1IN

V

C1+

3

4

MAX237

5

6

7

8

9

CC

10

11

V+

12

24

T4OUT

23

R2IN

22

R2OUT

21

T5INR1IN

20

T5OUT

19

T4IN

18

T3IN

17

R3OUTGND

16

R3IN

15

V-

14

C2-

13

C2+C1-

1.0μF

TTL/CMOS

INPUTS

+5V INPUT

1.0μF

10

C1+

12

C1-

13

C2+

14

C2-

T1IN

7

T2IN

6

T3IN

18

T4IN

19

T5IN

21

VOLTAGE INVERTER

+5V

9

V

CC

+5V TO +10V

VOLTAGE DOUBLER

+10V TO -10V

400kΩ

T1

400kΩ

T2

400kΩ

T3

400kΩ

T4

400kΩ

T5

V+

V-

T1OUT

T2OUT

T3OUT

T4OUT

T5OUT

1.0μF

11

15

1.0μF

2

3

1

RS-232 OUTPUTS

24

20

DIP/SO

TTL/CMOS

OUTPUTS

54R1OUT

22

R2OUT

R3OUT

17

GND

5kΩ

R1IN

R2IN

R3IN

23

16

R1

R2

R3

8

RS-232 INPUTS

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 25

TOP VIEW

Figure 16. MAX238 Pin Configuration and Typical Operating Circuit

+5V INPUT

1.0μF

T2OUT

T1OUT

R2IN

T1IN

R1OUT

R1IN

V

C1+

10

C1+

1.0μF

+

1

2

3

4

MAX238

5

6

7

8

9

CC

10

11

V+

12

T3OUT

24

R3IN

23

R3OUT

22

T4INR2OUT

21

20

T4OUT

19

T3IN

18

T2IN

17

R4OUTGND

16

R4IN

15

V-

14

C2-

13

C2+C1-

TTL/CMOS

INPUTS

12

C1-

13

C2+

14

C2-

T1IN

5

T2IN

18

T3IN

19

T4IN

21

67R1OUT

VOLTAGE DOUBLER

VOLTAGE INVERTER

+5V

DIP/SO

9

V

CC

+5V TO +10V

+10V TO -10V

400kΩ

T1

400kΩ

T2

400kΩ

T3

400kΩ

T4

R1

V+

V-

T1OUT

T2OUT

T3OUT

T4OUT

R1IN

5kΩ

1.0μF

11

15

1.0μF

2

1

RS-232 OUTPUTS

24

20

TTL/CMOS

OUTPUTS

4

R2OUT

R3OUT

22

R4OUT

17

R2

R3

R4

GND

8

5kΩ

R2IN

R3IN

R4IN

3

RS-232 INPUTS

23

16

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

26 ______________________________________________________________________________________

Figure 17. MAX239 Pin Configuration and Typical Operating Circuit

TOP VIEW

+

1

R1OUT

2

R1IN

GND

R5IN

R5OUT

R4OUT

3

4

CC

MAX239

5

V+

6

C+

7

C-

8

9

10

11

12

T1IN

24

T2IN

23

R2OUT

22

R2INV

21

20

T2OUT

19

T1OUT

18

R3IN

17

R3OUTV-

16

T3IN

15

N.C.

14

EN

13

T3OUTR4IN

DIP/SO

1.0μF

TTL/CMOS

INPUTS

TTL/CMOS

OUTPUTS

1.0μF

6

C1+

7

C1-

T1IN

24

T2IN

23

T3IN

16

12R1OUT

2221R2OUT

17

R3OUT

+5V INPUT

4

V

CC

+10V TO -10V

VOLTAGE INVERTER

+5V

400kΩ

+5V

400kΩ

+5V

400kΩ

+7.5V TO +13.2V

INPUT

T1

T2

T3

R1

R2

R3

5

V+

5kΩ

T1OUT

T2OUT

T3OUT

R1IN

R2IN

R3IN

8

V-

1.0μF

19

20

RS-232 OUTPUTS

13

18

RS-232 INPUTS

R4OUT

11

R5OUT R5IN

10

EN

14

R4

R5

GND

3

5kΩ

R4IN

N.C.

12

9

15

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 27

TOP VIEW

Figure 18. MAX240 Pin Configuration and Typical Operating Circuit

+5V INPUT

1.0μF

N.C.

R2OUT

T2IN T1IN

R1OUT

R1IN GND

V N.C. N.C. N.C.

25

1.0μF

R2IN

N.C.

9

10

11

12 13 14 15 16 17 18 19

CC

20 21 22

25

24

23

T2OUT

T1OUT

7

8

MAX240

27

26

T4OUT

T3OUT

5

6

29

28

R3IN

4

30

R3OUT

T5IN

3

31

N.C.

TTL/CMOS

1

2

+

44 43 42 41 40 39 38 37 36 35 34

32

33

INPUTS

N.C. SHDN EN T5OUT R4IN R4OUT T4IN T3IN R5OUT R5IN N.C.

C1+

27

C1-

28

C2+

29

C2-

T1IN

15

+5V

148T2IN

+5V

T3IN

37

T4IN

38

T5IN

2

1617R1OUT

1310R2OUT

+5V

19

V

CC

+5V TO +10V

VOLTAGE DOUBLER

+5V TO -10V

VOLTAGE INVERTER

400kΩ

T1

400kΩ

T2

400kΩ

T3

400kΩ

T4

400kΩ

T5

R1

R2

V+

V-

T1OUT

T2OUT

T3OUT

T4OUT

T5OUT

R1IN

5kΩ

R2IN

5kΩ

1.0μF

26

30

1.0μF

7

6

RS-232 OUTPUTS

5

41

N.C.

C1+

V+

C1-

C2+

V-

C2

N.C.

Plastic FP

TTL/CMOS

OUTPUTS

3

R4OUT

39

R5OUT R5IN

36

EN

42

R3

R4

R5

GND

18

5kΩ

R3IN

R4IN

SHDN

4R3OUT

RS-232 INPUTS

40

35

43

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

28 ______________________________________________________________________________________

Figure 19. MAX243 Pin Configuration and Typical Operating Circuit

TOP VIEW

+

1

C1+ V

2

V+

C1-

3

MAX243

4

C2+

C2-

5

V-

6

T2OUT

R2IN

7

8

16

CC

15

GND

14

T1OUT

13

R1IN

12

R1OUT

T1IN

11

10

T2IN

9

R2OUT

DIP/SO

RECEIVER INPUT

≤ -3V OPEN ≥ +3V

R1 OUTPUT

HIGH HIGH LOW

R2 OUTPUT

HIGH

LOW LOW

0.1μF

TTL/CMOS

INPUTS

TTL/CMOS

OUTPUTS

+5V INPUT

0.1μF

1

C1+

3

C1-

4

C2+

5

C2-

T1IN

11

T2IN

10

R1OUT

12

R2OUT

9

VOLTAGE DOUBLER

VOLTAGE INVERTER

+5V

V

CC

+5V TO +10V

+10V TO -10V

400kΩ

GND

15

16

5kΩ

0.1μF

T1OUT

T2OUT

R1IN

R2IN

2

+10V

V+

6

-10V

V-

0.1μF

14

RS-232 OUTPUTS

7

13

RS-232 INPUTS

8

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 29

Figure 20. MAX244 Pin Configuration and Typical Operating Circuit

TOP VIEW

RA3IN

RA2IN

RA1IN

RA1OUT

RA2OUT

RA3OUT

RA4OUT

RA5OUT

TA1IN

TA2IN

TA3IN

+5V

1μF

21

1μF

RA4INTA4IN

RA5IN

TA4OUT

TA3OUT

TA2OUT

TA1OUT

TB1OUT

TB2OUT

TB3OUT

TB4OUT

RB5IN

6

5

43

441234404142

1μF

+

39

TB3IN

38

37

36

35

34

33

32

31

30

29

RB4IN

RB3IN

RB2IN

RB1IN

RB1OUT

RB2OUT

RB3OUT

RB4OUT

RB5OUT

TB1IN

TB2IN

7

8

9

10

11

12

13

14

15

16

17

18

GND

MAX244

V+

C1-V-C2-

25

26

24

C2+

27

28

TB4IN

21

22 2319

20

CC

V

C1+

PLCC

C1+

23

C1-

24

C2+

25

C2-

215TA1OUT

TA1IN

TA2OUT

2

TA2IN

16

TA3OUT

3

TA3IN

17

TA4OUT

4

TA4IN

18

9 RA1IN

10 RA1OUT

8 RA2IN

+5V TO +10V VOLTAGE DOUBLER

+10V TO -10V VOLTAGE INVERTER

+5V +5V

+5V

5kΩ

V

CC

400kΩ

20

+5V

1μF

TB1OUT

TB2OUT

TB3OUT

TB4OUT

5kΩ

RB1OUT

TB1IN

TB2IN

TB3IN

TB4IN

RB1IN

RB2IN

22

V+

26

V-

1μF

44

30

43

29

42

28

41

27

36

35

37

MAX249 FUNCTIONAL DESCRIPTION

10 RECEIVERS 5 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS 8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS NO CONTROL PINS

11 RA2OUT

7 RA3IN

12 RA3OUT

6 RA4IN

13 RA4OUT

5 RA5IN

1419RA5OUT

5kΩ

GND

5kΩ

RB2OUT

5kΩ

RB3OUT

5kΩ

RB4OUT

5kΩ

RB5OUT

RB3IN

RB4IN

RB5IN

34

38

33

39

32

40

31

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

30 ______________________________________________________________________________________

Figure 21. MAX245 Pin Configuration and Typical Operating Circuit

TOP VIEW

+

1

ENR

2

TA1IN

3

TA2IN

4

TA3IN

5

TA4IN

RA4OUT

RA3OUT

RA2OUT

RA1OUT

RA1IN

RA2IN

RA3IN

RA4IN

RA5IN

TA1OUT

TA2OUT

TA3OUT

TA4OUT

GND

6

MAX245

7

8

9

10

11

12

13

14

15

16

17

18

19

20

RA5OUT

40 V

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

DIP

CC

ENT

TB1IN

TB2IN

TB3IN

TB4IN

RB5OUT

RB4OUT

RB3OUT

RB2OUT

RB1OUT

RB1IN

RB2IN

RB3IN

RB4IN

RB5IN

TB1OUT

TB2OUT

TB3OUT

TB4OUT

162TA1OUT

TA1IN

TA2OUT

17

3

TA2IN

18

TA3OUT

4

TA3IN

19

TA4OUT

5

TA4IN

1

ENR

11 RA1IN

10 RA1OUT

12 RA2IN

9 RA2OUT

13 RA3IN

1μF

5kΩ

+5V

V

CC

400kΩ

40

+5V

TB1OUT

TB1IN

TB2OUT

TB2IN

TB3OUT

TB3IN

TB4OUT

TB4IN

RB1IN

5kΩ

RB1OUT

RB2IN

5kΩ

RB2OUT

RB3IN

ENT

24

38

23

37

22

36

21

35

39

29

30

28

31

27

5kΩ

MAX245 FUNCTIONAL DESCRIPTION

10 RECEIVERS

8 RA3OUT

14 RA4IN

5 A-SIDE RECEIVERS (RA5 ALWAYS ACTIVE) 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE) 8 TRANSMITTTERS 4 A-SIDE TRANSMITTERS 2 CONTROL PINS 1 RECEIVER ENABLE (ENR) 1 TRANSMITTER ENABLE (ENT)

5kΩ

7 RA4OUT

15 RA5IN

5kΩ

620RA5OUT

GND

5kΩ

RB3OUT

RB4IN

5kΩ

RB4OUT

RB5IN

5kΩ

RB5OUT

32

26

33

25

34

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 31

Figure 22. MAX246 Pin Configuration and Typical Operating Circuit

TOP VIEW

ENA

TA1IN

TA2IN

TA3IN

TA4IN

RA5OUT

RA4OUT

RA3OUT

RA2OUT

RA1OUT

RA1IN

RA2IN

RA3IN

RA4IN

RA5IN

TA1OUT

TA2OUT

TA3OUT

TA4OUT

GND

+5V

1μF

+

1

2

3

4

5

6

7

MAX246

8

9

10

11

12

13

14

15

16

17

18

19

20

40 V

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

CC

ENB

TB1IN

TB2IN

TB3IN

TB4IN

RB5OUT

RB4OUT

RB3OUT

RB2OUT

RB1OUT

RB1IN

RB2IN

RB3IN

RB4IN

RB5IN

TB1OUT

TB2OUT

TB3OUT

TB4OUT

TA1OUT

16

2

TA1IN

173TA2OUT

TA2IN

18

TA3OUT

TA3IN

4

TA4OUT

19

TA4IN

5

ENA

1

11 RA1IN

10 RA1OUT

12 RA2IN

5kΩ

+5V

V

CC

400kΩ

40

+5V

TB1OUT

TB1IN

TB2OUT

TB2IN

TB3OUT

TB3IN

TB4OUT

TB4IN

RB1IN

5kΩ

RB1OUT

RB2IN

5kΩ

ENB

24

38

23

37

22

36

21

35

39

29

30

28

DIP

MAX246 FUNCTIONAL DESCRIPTION

10 RECEIVERS 5 A-SIDE RECEIVERS (RA5 ALWAYS ACTIVE) 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE) 8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS 2 CONTROL PINS ENABLE A-SIDE (ENA) ENABLE B-SIDE (ENB)

9 RA2OUT

13 RA3IN

8 RA3OUT

14 RA4IN

7 RA4OUT

15 RA5IN

6 RA5OUT

5kΩ

GND

RB2OUT

31

RB3IN

27

5kΩ

RB3OUT

32

RB4IN

26

5kΩ

RB4OUT

33

RB5IN

25

5kΩ

RB5OUT

34

20

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

32 ______________________________________________________________________________________

Figure 23. MAX247 Pin Configuration and Typical Operating Circuit

TOP VIEW

+

1

ENTA

2

TA1IN

3

TA2IN

4

TA3IN

5

TA4IN

RB5OUT

RA4OUT

RA3OUT

RA2OUT

RA1OUT

TA1OUT

TA2OUT

TA3OUT

TA4OUT

6

7

MAX247

8

9

10

ENRA ENRB

11

RA1IN

12

RA2IN

13

RA3IN

14

RA4IN

15

16

17

18

19

20

GND

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

DIP

MAX247 FUNCTIONAL DESCRIPTION

9 RECEIVERS 4 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE) 8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS 4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVER B-SIDE (ENTB)

V

CC

ENTB

TB1IN

TB2IN

TB3IN

TB4IN

RB4OUT

RB3OUT

RB2OUT

RB1OUT

RB1IN

RB2IN

RB3IN

RB4IN

RB5IN

TB1OUT

TB2OUT

TB3OUT

TB4OUT

1

ENTA

16

TA1OUT

2

TA1IN

173TA2OUT

TA2IN

18

TA3OUT

4

TA3IN

195TA4OUT

TA4IN

6 RB5OUT

12 RA1IN

10 RA1OUT

13 RA2IN

9 RA2OUT

14 RA3IN

8 RA3OUT

15 RA4IN

720RA4OUT

11

1μF

5kΩ

+5V

V

CC

400kΩ

GND

40

39

+5V

TB1OUT

TB1IN

TB2OUT

TB2IN

TB3OUT

TB3IN

TB4OUT

TB4IN

RB5IN

5kΩ

RB1IN

5kΩ

RB1OUT

RB2IN

5kΩ

RB2OUT

RB3IN

5kΩ

RB3OUT

RB4IN

5kΩ

RB4OUT

ENTB

ENRB

24

38

23

37

22

36

21

35

25

29

31

28

32

27

33

26

34

30ENRA

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 33

Figure 24. MAX248 Pin Configuration and Typical Operating Circuit

RA2IN

RA1IN

ENRA

RA1OUT

RA2OUT

RA3OUT

RA4OUT

TA1IN

TA2IN

TA3IN

TA4IN

TOP VIEW

7

8

9

10

11

12

13

14

15

16

17

6

18

RA3IN

5

ENTA

RA4IN

20

GND

TA4OUT

TA3OUT

21

CC

V

C1+

TA2OUT

TA1OUT

+

MAX248

22 2319

V+

C1-V-C2-

PLCC

TB1OUT

TB2OUT

43

441234404142

25

24

C2+

TB3OUT

26

TA4OUT

27

ENTB

28

RB4IN

TB4IN

39

38

37

36

35

34

33

32

31

30

29

RB3IN

RB2IN

RB1IN

ENRB

RB1OUT

RB2OUT

RB3OUT

RB4OUT

TB1IN

TB2IN

TB3IN

1μF

21

C1+

23

C1-

24

C2+

25

C2-

18

ENTA

1

TA1OUT

14

TA1IN

215TA2OUT

TA2IN

3

TA3OUT

16

TA3IN

417TA4OUT

TA4IN

8 RA1IN

+5V

1μF

20

V

+5V

CC

+5V

400kΩ

+5V

400kΩ

+5V

400kΩ

+5V

400kΩ

+5V TO +10V VOLTAGE DOUBLER

+10V TO -10V VOLTAGE INVERTER

1μF

ENTB

TB1OUT

TB1IN

TB2OUT

TB2IN

TB3OUT

TB3IN

TB4OUT

TB4IN

RB1IN

22

V+

26

V-

1μF

27

44

31

43

30

42

29

41

28

37

MAX248 FUNCTIONAL DESCRIPTION

8 RECEIVERS 4 A-SIDE RECEIVERS 4 B-SIDE RECEIVERS 8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS 4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVER B-SIDE (ENTB

)

10 RA1OUT

7 RA2IN

11 RA2OUT

6 RA3IN

12 RA3OUT

5 RA4IN

1319RA4OUT

9

5kΩ

GND

5kΩ

RB1OUT

5kΩ

RB2OUT

5kΩ

RB3OUT

5kΩ

RB4OUT

RB2IN

RB3IN

RB4IN

ENRB

35

38

34

39

33

40

32

36ENRA

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

34 ______________________________________________________________________________________

Figure 25. MAX249 Pin Configuration and Typical Operating Circuit

TOP VIEW

RA3IN

RA4IN

RA5IN

TA3OUT

TA2OUT

TA1OUT

TB1OUT

TB2OUT

6

5

43

441234404142

+

RA2IN

7

8

RA1IN

ENRA

9

10

RA1OUT

11

RA2OUT

12

RA3OUT

RA4OUT

RA5OUT

TA1IN

TA2IN

13

14

15

16

17

18

GND

ENTA

MAX249

21

22 2319

20

CC

V+

V

C1+

25

24

C1-V-C2-

C2+

PLCC

TB3OUT

26

27

RB5IN

28

ENTB

RB4IN

TB3IN

39

38

37

36

35

34

33

32

31

30

29

RB3IN

RB2IN

RB1IN

ENRB

RB1OUT

RB2OUT

RB3OUT

RB4OUT

RB5OUT

TB1IN

TB2INTA3IN

1μF

21

C1+

23

C1-

24

C2+

25

C2-

ENTA

18

TA1OUT

1

15

TA1IN

2

TA2OUT

16

TA2IN

3

TA3OUT

17

TA3IN

8 RA1IN

10 RA1OUT

7 RA2IN

+5V

1μF

20

V

+5V TO +10V VOLTAGE DOUBLER

+10V TO -10V VOLTAGE INVERTER

+5V

400kΩ

+5V

400kΩ

+5V

400kΩ

5kΩ

1μF

TB1OUT

TB2OUT

TB3OUT

5kΩ

RB1OUT

ENTB

TB1IN

TB2IN

TB3IN

RB1IN

RB2IN

22

V+

26

V-

1μF

27

44

30

43

29

42

28

37

35

38

CC

+5V

5kΩ

MAX249 FUNCTIONAL DESCRIPTION

10 RECEIVERS 5 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS 6 TRANSMITTERS 3 A-SIDE TRANSMITTERS 3 B-SIDE TRANSMITTERS 4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA)

11 RA2OUT

6 RA3IN

5kΩ

12 RA3OUT

5 RA4IN

5kΩ

13 RA4OUT

4 RA5IN

ENABLE RECEIVER B-SIDE (ENTB)

5kΩ

1419RA5OUT

9

GND

5kΩ

RB2OUT

5kΩ

RB3OUT

5kΩ

RB4OUT

5kΩ

RB5OUT

RB3IN

RB4IN

RB5IN

ENRB

34

39

33

40

32

41

31

36ENRA

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 35

___________________________________________Ordering Information (continued)

PART

MAX222CPN+

0°C to +70°C

TEMP RANGE PIN-PACKAGE PART TEMP RANGE PIN-PACKAGE

18 Plastic DIP

MAX222CWN+ 0°C to +70°C 18 Wide SO

MAX222C/D 0°C to +70°C Dice*

MAX222EPN+ -40°C to +85°C 18 Plastic DIP

MAX222EWN+ -40°C to +85°C 18 Wide SO

MAX222EJN -40°C to +85°C 18 CERDIP

MAX222MJN -55°C to +125°C 18 CERDIP

MAX223CAI+

0°C to +70°C 28 SSOP

MAX223CWI+ 0°C to +70°C 28 Wide SO

MAX223C/D 0°C to +70°C Dice*

MAX223EAI+ -40°C to +85°C 28 SSOP

MAX223EWI+ -40°C to +85°C 28 Wide SO

MAX225CWI+

0°C to +70°C 28 Wide SO

MAX225EWI+ -40°C to +85°C 28 Wide SO

MAX230CPP+

0°C to +70°C 20 Plastic DIP

MAX230CWP+ 0°C to +70°C 20 Wide SO

MAX230C/D 0°C to +70°C Dice*

MAX230EPP+ -40°C to +85°C 20 Plastic DIP

MAX230EWP+ -40°C to +85°C 20 Wide SO

MAX230EJP -40°C to +85°C 20 CERDIP

MAX230MJP -55°C to +125°C 20 CERDIP

MAX231CPD+

0°C to +70°C 14 Plastic DIP

MAX231CWE+ 0°C to +70°C 16 Wide SO

MAX231CJD 0°C to +70°C 14 CERDIP

MAX231C/D 0°C to +70°C Dice*

MAX231EPD+ -40°C to +85°C 14 Plastic DIP

MAX231EWE+ -40°C to +85°C 16 Wide SO

MAX231EJD -40°C to +85°C 14 CERDIP

MAX231MJD -55°C to +125°C 14 CERDIP

MAX232CPE+

0°C to +70°C 16 Plastic DIP

MAX232CSE+ 0°C to +70°C 16 Narrow SO

MAX232CWE+ 0°C to +70°C 16 Wide SO

MAX232C/D 0°C to +70°C Dice*

MAX232EPE+ -40°C to +85°C 16 Plastic DIP

MAX232ESE+ -40°C to +85°C 16 Narrow SO

MAX232EWE+ -40°C to +85°C 16 Wide SO

MAX232EJE -40°C to +85°C 16 CERDIP

MAX232MJE -55°C to +125°C 16 CERDIP

MAX232MLP+ -55°C to +125°C 20 LCC

MAX232ACPE+

0°C to +70°C 16 Plastic DIP

MAX232ACSE+ 0°C to +70°C 16 Narrow SO

MAX232ACWE+ 0°C to +70°C 16 Wide SO

MAX232AC/D

MAX232AEPE+ -40°C to +85°C 16 Plastic DIP

MAX232AESE+

0°C to +70°C Dice*

-40°C to +85°C 16 Narrow SO

MAX232AEWE+ -40°C to +85°C 16 Wide SO

MAX232AEJE -40°C to +85°C 16 CERDIP

MAX232AMJE -55°C to +125°C 16 CERDIP

MAX232AMLP+ -55°C to +125°C 20 LCC

MAX233CPP+

0°C to +70°C 20 Plastic DIP

MAX233EPP+ -40°C to +85°C 20 Plastic DIP

MAX233ACPP+

0°C to +70°C 20 Plastic DIP

MAX233ACWP+ 0°C to +70°C 20 Wide SO

MAX233AEPP+ -40°C to +85°C 20 Plastic DIP

MAX233AEWP+ -40°C to +85°C 20 Wide SO

MAX234CPE+

0°C to +70°C 16 Plastic DIP

MAX234CWE+ 0°C to +70°C 16 Wide SO

MAX234C/D 0°C to +70°C Dice*

MAX234EPE+ -40°C to +85°C 16 Plastic DIP

MAX234EWE+ -40°C to +85°C 16 Wide SO

MAX234EJE -40°C to +85°C 16 CERDIP

MAX234MJE -55°C to +125°C 16 CERDIP

MAX235CPG+

0°C to +70°C 24 Wide Plastic DIP

MAX235EPG+ -40°C to +85°C 24 Wide Plastic DIP

MAX235EDG -40°C to +85°C 24 Ceramic SB

MAX235MDG -55°C to +125°C 24 Ceramic SB

MAX236CNG+

0°C to +70°C 24 Narrow Plastic DIP

MAX236CWG+ 0°C to +70°C 24 Wide SO

MAX236C/D 0°C to +70°C Dice*

MAX236ENG+ -40°C to +85°C 24 Narrow Plastic DIP

MAX236EWG+ -40°C to +85°C 24 Wide SO

MAX236ERG -40°C to +85°C 24 Narrow CERDIP

MAX236MRG -55°C to +125°C 24 Narrow CERDIP

MAX237CNG+

0°C to +70°C 24 Narrow Plastic DIP

MAX237CWG+ 0°C to +70°C 24 Wide SO

MAX237C/D 0°C to +70°C Dice*

MAX237ENG+ -40°C to +85°C 24 Narrow Plastic DIP

MAX237EWG+ -40°C to +85°C 24 Wide SO

MAX237ERG -40°C to +85°C 24 Narrow CERDIP

MAX237MRG -55°C to +125°C 24 Narrow CERDIP

MAX238CNG+

0°C to +70°C 24 Narrow Plastic DIP

MAX238CWG+ 0°C to +70°C 24 Wide SO

MAX238C/D 0°C to +70°C Dice*

+

Denotes a lead(Pb)-free/RoHS-compliant package.

*

Contact factory for dice specifications.

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

36 ______________________________________________________________________________________

MAX238ENG+ -40°C to +85°C 24 Narrow Plastic DIP

___________________________________________Ordering Information (continued)

18 CERDIP-55°C to +125°CMAX242MJN

18 CERDIP-40°C to +85°CMAX242EJN

18 Wide SO-40°C to +85°CMAX242EWN+

18 Plastic DIP-40°C to +85°CMAX242EPN+

Dice*0°C to +70°CMAX242C/D

18 Wide SO0°C to +70°CMAX242CWN+

18 Plastic DIP0°C to +70°CMAX242CPN+

20 SSOP0°C to +70°C

MAX242CAP+

28 Wide SO-40°C to +85°CMAX241EWI+

28 SSOP-40°C to +85°CMAX241EAI+

Dice*0°C to +70°CMAX241C/D

28 Wide SO0°C to +70°CMAX241CWI+

28 SSOP0°C to +70°C

MAX241CAI+

Dice*0°C to +70°CMAX240C/D

44 Plastic FP0°C to +70°C

MAX240CMH+

24 Narrow CERDIP-55°C to +125°CMAX239MRG

24 Narrow CERDIP-40°C to +85°CMAX239ERG

24 Wide SO-40°C to +85°CMAX239EWG+

24 Narrow Plastic DIP-40°C to +85°CMAX239ENG+

Dice*0°C to +70°CMAX239C/D

24 Wide SO0°C to +70°CMAX239CWG+

24 Narrow Plastic DIP0°C to +70°C

MAX239CNG+

24 Narrow CERDIP-55°C to +125°C

24 Wide SO

PIN-PACKAGETEMP RANGE

-40°C to +85°C

MAX238MRG

24 Narrow CERDIP-40°C to +85°CMAX238ERG

MAX238EWG+

PART PIN-PACKAGETEMP RANGEPART

44 PLCC-40°C to +85°CMAX249EQH+

44 PLCC0°C to +70°C

MAX249CQH+

44 PLCC-40°C to +85°CMAX248EQH+

Dice*0°C to +70°CMAX248C/D

44 PLCC0°C to +70°C

MAX248CQH+

40 Plastic DIP-40°C to +85°CMAX247EPL+

Dice*0°C to +70°CMAX247C/D

40 Plastic DIP0°C to +70°C

MAX247CPL+

40 Plastic DIP-40°C to +85°CMAX246EPL+

Dice*0°C to +70°CMAX246C/D

40 Plastic DIP0°C to +70°C

MAX246CPL+

40 Plastic DIP-40°C to +85°CMAX245EPL+

Dice*0°C to +70°CMAX245C/D

40 Plastic DIP0°C to +70°C

MAX245CPL+

44 PLCC-40°C to +85°CMAX244EQH+

Dice*0°C to +70°CMAX244C/D

44 PLCC0°C to +70°C

MAX244CQH+

16 CERDIP-55°C to +125°CMAX243MJE

16 CERDIP-40°C to +85°CMAX243EJE

16 Wide SO-40°C to +85°CMAX243EWE+

16 Narrow SO-40°C to +85°CMAX243ESE+

16 Plastic DIP-40°C to +85°CMAX243EPE+

Dice*0°C to +70°CMAX243C/D

16 Wide SO0°C to +70°C

16 Plastic DIP0°C to +70°C

MAX243CWE+

16 Narrow SO0°C to +70°CMAX243CSE+

MAX243CPE+

+

Denotes a lead(Pb)-free/RoHS-compliant package.

*

Contact factory for dice specifications.

MAX220–MAX249

+5V-Powered, Multichannel RS-232

Drivers/Receivers

______________________________________________________________________________________ 37

Package Information

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.

PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.

14 PDIP P14+3

21-0043

—

16 PDIP P16+1

16 PDIP P16+2

16 PDIP P16+3

18 PDIP P18+5

20 PDIP P20+3

20 PDIP P20M+1

24 PDIP N24+3

24 PDIP P24M+1

21-0044

28 PDIP P28+2

40 PDIP P40+1

40 PDIP P40M+2

14 CERDIP J14-3

21-0045

16 CERDIP J16-3

18 CERDIP J18-2

20 CERDIP J20-2

24 CERDIP R24-4

16 SO(N) S16+3

21-0041 90-0097

16 SO(N) S16+5

16 SO(W) W16+1

21-0042

90-0107

16 SO(W) W16+2

16 SO(W) W16+3

18 SO(W) W18+1

90-0181

20 SO(W) W20+3

90-0108

20 SO(W) W20M+1

24 SO(W) W24+2

90-0182

28 SO(W) W28+1

90-0109

28 SO(W) W28+2

28 SO(W) W28M+1

20 LCC L20+3

21-0658 90-0177

20 SSOP A20+1

21-0056

90-0094

24 SSOP A24+2

90-0110

28 SSOP A28+1

90-0095

16 TSSOP U16+1

90-0117

16 FPCK F16-3

21-0013

—

44 MQFP M44+5

21-0826 90-0169

44 PLCC Q44+1

21-0049 90-0236

44 PLCC Q44+2

MAX220–MAX249

+5V-Powered, Multichannel RS-232 Drivers/Receivers

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

38

____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Revision History

REVISION

NUMBER

15 1/06

16 7/10

REVISION

DATE

DESCRIPTION

Added part information to the lead temperature in the Absolute Maximum Ratings sections

Changed multiple packages to lead-free versions; updated/added notes 3, 4, 5, 7, and 8 to the Electrical Characterist ics table; removed incorrect subscripting from all pin names in the Electrical Character istics table and Pin Configurations

PAGES

CHANGED

2, 5, 8

1, 2–9, 17–36