TEXAS INSTRUMENTS MAX3238E Technical data

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DOUT1
DOUT2
DOUT3

RIN1
RIN2

DOUT4

RIN3

NC

C1–
DIN1
DIN2
DIN3
ROUT1
ROUT2
DIN4
ROUT3

1
2
3
4
5
6
7
8
9
10
11
12
13
14

28
27
26
25
24
23
22
21
20
19
18
17
16
15

C2+

GND

C2−

V−
DOUT1
DOUT2
DOUT3

RIN1
RIN2

DOUT4

RIN3

DOUT5

FORCEON

FORCEOFF

C1+
V+
V

CC

C1−
DIN1
DIN2
DIN3
ROUT1
ROUT2
DIN4
ROUT3
DIN5
ROUT1B
INVALID

DB, DW, OR PW PACKAGE

(TOP VIEW)

RHB PACKAGE

(TOP VIEW)

V−

C2–

GND

C2+

C1+V+VCCNC

DOUT5

FORCEON

FORCEOFF

INVALID

NC

ROUT1B

DIN5

NC

1
2
3
4
5
6
7
8

24
23
22
21
20
19
18
17

3132 30 29 28 27 26 25

109 1112 13 14 15 16

3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

FEATURES

• RS-232 Bus-Pin ESD Protection Exceeds
± 15 kV Using Human-Body Model (HBM)

• Meets or Exceeds the Requirements of

TIA/EIA-232-F and ITU v.28 Standards

• Operates With 3-V to 5.5-V V

• Operates up to 400 kbit/s

• Five Drivers and Three Receivers

• Auto-Powerdown Plus Feature Enables

Flexible Power-Down Mode

• Low Standby Current . . . 1 µ A Typical

• External Capacitors . . . 4 × 0.1 µ F

• Accepts 5-V Logic Input With 3.3-V Supply

• Always-Active Noninverting Receiver Output

(ROUT1B)

• Alternative High-Speed Pin-Compatible
Device (1 Mbit/s) for SNx5C3238

• ESD Protection for RS-232 Interface Pins
– ± 15 kV – Human-Body Model (HBM)
– ± 8 kV – IEC61000-4-2, Contact Discharge
– ± 15 kV – IEC61000-4-2, Air-Gap Discharge

APPLICATIONS

• Battery-Powered Systems

• PDAs

• Notebooks

• Subnotebooks

• Laptops

• Palmtop PCs

• Hand-Held Equipment

• Modems

• Printers

Supply

CC

MAX3238E

WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

DESCRIPTION/ORDERING INFORMATION

The MAX3238E consists of five line drivers, three line receivers, and a dual charge-pump circuit with ± 15-kV
ESD (HBM) protection on the driver output (DOUT) and receiver input (RIN) terminals. The device meets the
requirements of TIA/EIA-232-F and provides the electrical interface between notebook and subnotebook
computer applications. The charge pump and four small external capacitors allow operation from a single 3-V to

5.5-V supply. In addition, the device includes an always-active noninverting output (ROUT1B), which allows

applications using the ring indicator to transmit data while the device is powered down. This device operates at
data signaling rates up to 250 kbit/s and a maximum of 30-V/ µ s driver output slew rate.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

Copyright © 2006, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

DESCRIPTION/ORDERING INFORMATION (CONTINUED)

Flexible control options for power management are featured when the serial port and driver inputs are inactive.
The auto-powerdown plus feature functions when FORCEON is low and FORCEOFF is high. During this mode
of operation, if the device does not sense valid signal transitions on all receiver and driver inputs for
approximately 30 s, the built-in charge pump and drivers are powered down, reducing the supply current to
1 µ A. By disconnecting the serial port or placing the peripheral drivers off, auto-powerdown plus occurs if there
is no activity in the logic levels for the driver inputs. Auto-powerdown plus can be disabled when FORCEON and
FORCEOFF are high. With auto-powerdown plus enabled, the device activates automatically when a valid signal
is applied to any receiver or driver input. INVALID is high (valid data) if any receiver input voltage is greater than

2.7 V or less than –2.7 V, or has been between –0.3 V and 0.3 V for less than 30 µ s. INVALID is low (invalid

data) if all receiver input voltages are between –0.3 V and 0.3 V for more than 30 µ s. Refer to Figure 5 for
receiver input levels.

ORDERING INFORMATION

T

A

SSOP – DB MAX3238EC

0 ° C to 70 ° C TSSOP – PW MP238EC

SOIC – DW Reel of 2000 MAX3238ECDWR MAX3238EC
QFN – RHB Reel of 2000 MAX3238ECRHBR Preview

SSOP – DB MAX3238EI

–40 ° C to 85 ° C TSSOP – PW MP238EI

SOIC – DW Reel of 2000 MAX3238ICDWR MAX3238EI
QFN – RHB Reel of 2000 MAX3238EIRHBR Preview

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

PACKAGE

(1)

Tube of 50 MAX3238ECDB
Reel of 2000 MAX3238ECDBR
Tube of 50 MAX3238ECPW
Reel of 2000 MAX3238ECPWR

Tube of 50 MAX3238EIDB
Reel of 2000 MAX3238EIDBR
Tube of 50 MAX3238EIPW
Reel of 2000 MAX3238EIPWR

ORDERABLE PART NUMBER TOP-SIDE MARKING

2

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3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

FUNCTION TABLES

abc

Each Driver

INPUTS

DIN FORCEON FORCEOFF

X X L X Z Powered off
L H H X H
H H H X L
L L H <30 s H
H L H <30 s L
L L H >30 s Z
H L H >30 s Z

(1) H = high level, L = low level, X = irrelevant, Z = high impedance

TIME ELAPSED SINCE LAST

RIN OR DIN TRANSITION

Each Receiver

INPUTS OUTPUTS

RIN1 RIN2–RIN3 FORCEOFF ROUT1B

L X L X L Z

H X L X H Z

L L H <30 s L H

L H H <30 s L L
H L H <30 s H H auto-powerdown plus
H H H <30 s H L

Open Open H <30 s L H

(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off

TIME ELAPSED SINCE LAST ROUT2 AND

RIN OR DIN TRANSITION ROUT3

(1)

OUTPUT

DOUT

(1)

DRIVER STATUS

Normal operation with

auto-powerdown plus disabled

Normal operation with

auto-powerdown plus enabled

Powered off by

auto-powerdown plus feature

RECEIVER STATUS

Powered off while
ROUT1B is active

Normal operation with

disabled/enabled

MAX3238E

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DIN3

DIN2

DIN1

DOUT3

DOUT2

DOUT1

Auto-powerdown Plus

INVALID

RIN1

RIN2

RIN3

FORCEOFF

FORCEON

ROUT1

ROUT1B

ROUT2

ROUT3

24

23

22

14

13

21

16

20

18

5

6

7

15

8

9

11

DIN4

DOUT4

19 10

DIN5

DOUT5

17 12

MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

LOGIC DIAGRAM (POSITIVE LOGIC)

4

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3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

V

CC

V+ Positive-output supply voltage range
V– Negative-output supply voltage range
V+ – V– Supply voltage difference

V

I

V

O

θ

JA

T

J

T

stg

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

(2) All voltages are with respect to network GND.
(3) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient

(4) The package thermal impedance is calculated in accordance with JESD 51-7.

Supply voltage range

Input voltage range V

Output voltage range V

Package thermal impedance

Operating virtual junction temperature 150 ° C
Storage temperature range –65 150 ° C

only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

temperature is PD= (TJ(max) – TA)/ θJA. Operating at the absolute maximum TJof 150 ° C can affect reliability.

(1)

MIN MAX UNIT

(2)

(2)

(2)

(2)

–0.3 6 V
–0.3 7 V

0.3 –7 V

Driver ( FORCEOFF, FORCEON) –0.3 6
Receiver –25 25
Driver –13.2 13.2
Receiver ( INVALID) –0.3 V

+ 0.3

CC

DB package 62

(3) (4)

DW package 46
PW package 62
RHB package TBD

MAX3238E

13 V

° C/W

Recommended Operating Conditions

(1)

See Figure 6

MIN NOM MAX UNIT

V

= 3.3 V 3 3.3 3.6

Supply voltage V

V

Driver and control high-level input voltage V

IH

V

Driver and control low-level input voltage DIN, FORCEOFF, FORCEON 0 0.8 V

IL

V

Receiver input voltage –25 25 V

I

T

Operating free-air temperature ° C

A

(1) Testing supply conditions are C1–C4 = 0.1 µ F at V

and C2–C4 = 0.33 µ F at V

Electrical Characteristics

= 5 V ± 0.5 V.

CC

(1)

DIN, FORCEOFF,
FORCEON

= 3.3 V ± 0.15 V; C1–C4 = 0.22 µ F at V

CC

CC

V

= 5 V 4.5 5 5.5

CC

V

= 3.3 V 2 5.5

CC

V

= 5 V 2.4 5.5

CC

MAX3238EC 0 70
MAX3238EI –40 85

= 3.3 V ± 0.3 V; and C1 = 0.047 µ F

CC

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 6 )

PARAMETER TEST CONDITIONS MIN TYP

I

Input leakage current FORCEOFF, FORCEON ± 0.01 ± 1 µ A

I

Auto-powerdown plus No load,
disabled FORCEOFF and FORCEON at V

Supply current Powered off No load, FORCEOFF at GND 1 10

I

CC

(T

= 25 ° C)

A

Auto-powerdown plus
enabled

(1) Testing supply conditions are C1–C4 = 0.1 µ F at V

and C2–C4 = 0.33 µ F at V

(2) All typical values are at V

CC

= 3.3 V or V

CC

= 5 V ± 0.5 V.

= 5 V, and TA= 25 ° C.

CC

No load, FORCEOFF at VCC,
FORCEON at GND, 1 10
All RIN are open or grounded

= 3.3 V ± 0.15 V; C1–C4 = 0.22 µ F at V

CC

CC

= 3.3 V ± 0.3 V; and C1 = 0.047 µ F

CC

(2)

MAX UNIT

0.5 2 mA

µ A

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MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

DRIVER SECTION

xxx

Electrical Characteristics

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 6 )

PARAMETER TEST CONDITIONS MIN TYP

V

High-level output voltage All DOUT at RL= 3 k Ω to GND 5 5.4 V

OH

V

Low-level output voltage All DOUT at RL= 3 k Ω to GND –5 –5.4 V

OL

I

High-level input current VI= V

IH

I

Low-level input current VIat GND ± 0.01 ± 1 µ A

IL

I

Short-circuit output current

OS

r

Output resistance VCC, V+, and V– = 0 V, VO= ± 2 V 300 10M Ω

o

I

Output leakage current FORCEOFF = GND µ A

OZ

(1) Testing supply conditions are C1–C4 = 0.1 µ F at V

and C2–C4 = 0.33 µ F at V
(2) All typical values are at V
(3) Short-circuit durations should be controlled to prevent exceeding the device absolute power dissipation ratings, and not more than one

output should be shorted at a time.

CC

= 3.3 V or V

CC

(1)

V

CC

(3)

V

CC

= 5 V ± 0.5 V.

(2)

CC

± 0.01 ± 1 µ A

= 3.6 V, VO= 0 V ± 35 ± 60
= 5.5 V, VO= 0 V ± 40 ± 100

CC

= 5 V, and TA= 25 ° C.

CC

VO= ± 12 V, V
VO= ± 10 V, V

= 3.3 V ± 0.15 V; C1–C4 = 0.22 µ F at V

= 3 V to 3.6 V ± 25

CC

= 4.5 V to 5.5 V ± 25

CC

= 3.3 V ± 0.3 V; and C1 = 0.047 µ F

CC

MAX UNIT

mA

Switching Characteristics

(1)

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 6 )

PARAMETER TEST CONDITIONS MIN TYP

Maximum data rate 250 400 kbit/s

t

sk(p)

SR(tr) V/ µ s

Pulse skew

Slew rate, transition region V
(see Figure 1) RL= 3 k Ω to 7 k Ω

(3)

(1) Testing supply conditions are C1–C4 = 0.1 µ F at V

and C2–C4 = 0.33 µ F at V
(2) All typical values are at V
(3) Pulse skew is defined as |t

CC

CC

PLH

CL= 1000 pF, RL= 3 k Ω ,
One DOUT switching, See Figure 1

CL= 150 pF to 2500 pF, RL= 3 k Ω to 7 k Ω ,
See Figure 2

= 3.3 V,

CC

= 3.3 V ± 0.15 V; C1–C4 = 0.22 µ F at V

= 5 V ± 0.5 V.

= 3.3 V or V

– t

CC

| of each channel of the same device.

PHL

CC

= 5 V, and TA= 25 ° C.

CL= 150 pF to 1000 pF 6 30
CL= 150 pF to 2500 pF 4 30

= 3.3 V ± 0.3 V; and C1 = 0.047 µ F

CC

(2)

MAX UNIT

100 ns

ESD Protection

PARAMETER TEST CONDITIONS TYP UNIT

HBM ± 15

DOUT IEC 61000-4-2, Air-Gap Discharge ± 15 kV

IEC 61000-4-2, Contact Discharge ± 8

6

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MAX3238E

3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

RECEIVER SECTION

xxx

Electrical Characteristics

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 6 )

PARAMETER TEST CONDITIONS MIN TYP

V

OH

V

OL

V

IT+

V

IT–

V

hys

I

OZ

r

i

(1) Testing supply conditions are C1–C4 = 0.1 µ F at V
(2) All typical values are at V

High-level output voltage IOH= –1 mA V
Low-level output voltage IOL= 1.6 mA 0.4 V

Positive-going input threshold voltage V

Negative-going input threshold voltage V

Input hysteresis (V
Output leakage current (except ROUT1B) FORCEOFF = 0 V ± 0.05 ± 10 µ A
Input resistance VI= ± 3 V to ± 25 V 3 5 7 k Ω

and C2–C4 = 0.33 µ F at V

Switching Characteristics

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER TEST CONDITIONS TYP

t

Propagation delay time, low- to high-level output CL= 150 pF, See Figure 3 150 ns

PLH

t

Propagation delay time, high- to low-level output CL= 150 pF, See Figure 3 150 ns

PHL

t

Output enable time CL= 150 pF, RL= 3 k Ω , See Figure 4 200 ns

en

t

Output disable time CL= 150 pF, RL= 3 k Ω , See Figure 4 200 ns

dis

t

Pulse skew

sk(p)

(1) Testing supply conditions are C1–C4 = 0.1 µ F at V

and C2–C4 = 0.33 µ F at V
(2) All typical values are at V
(3) Pulse skew is defined as |t

(3)

IT+

CC

CC

CC

CC

PLH

(1)

(2)

– 0.6 V

CC

V

= 3.3 V 1.5 2.4

CC

V

= 5 V 1.8 2.4

CC

V

= 3.3 V 0.6 1.2

CC

V

= 5 V 0.8 1.5

CC

– V

) 0.3 V

IT–

= 5 V ± 0.5 V.

= 3.3 V or V

(1)

CC

= 5 V, and TA= 25 ° C.

CC

= 3.3 V ± 0.15 V; C1–C4 = 0.22 µ F at V

= 3.3 V ± 0.3 V; and C1 = 0.047 µ F

CC

– 0.1 V

CC

See Figure 3 50 ns

= 5 V ± 0.5 V.

= 3.3 V or V

– t

CC

| of each channel of the same device.

PHL

= 3.3 V ± 0.15 V; C1–C4 = 0.22 µ F at V

CC

= 5 V, and TA= 25 ° C.

= 3.3 V ± 0.3 V; and C1 = 0.047 µ F

CC

MAX UNIT

(2)

UNIT

ESD Protection

PARAMETER TEST CONDITIONS TYP UNIT

HBM ± 15

RIN IEC 61000-4-2, Air-Gap Discharge ± 15 kV

IEC 61000-4-2, Contact Discharge ± 8

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MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

AUTO-POWERDOWN PLUS SECTION

xxx

Electrical Characteristics

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 5 )

PARAMETER TEST CONDITIONS MIN MAX UNIT

V

T+(valid)

V

T–(valid)

V

T(invalid)

V

OH

V

OL

Switching Characteristics

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 5 )

t

valid

t

invalid

t

en

t

dis

Receiver input threshold
for INVALID high-level output voltage

Receiver input threshold
for INVALID high-level output voltage

Receiver input threshold
for INVALID low-level output voltage

INVALID high-level output voltage V

INVALID low-level output voltage 0.4 V

PARAMETER MIN TYP

FORCEON = GND, FORCEOFF = V

FORCEON = GND, FORCEOFF = V

FORCEON = GND, FORCEOFF = V
IOH= –1 mA, FORCEON = GND,

FORCEOFF = V

CC

IOL= 1.6 mA, FORCEON = GND,
FORCEOFF = V

CC

CC

CC

CC

–2.7 V

–0.3 0.3 V

– 0.6 V

CC

2.7 V

(1)

MAX UNIT

Propagation delay time, low- to high-level output 0.1 µ s
Propagation delay time, high- to low-level output 50 µ s
Supply enable time 25 µ s
Receiver or driver edge to auto-powerdown plus 15 30 60 s

(1) All typical values are at V

= 3.3 V or V

CC

= 5 V, and TA= 25 ° C.

CC

8

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50 Ω

TEST CIRCUIT VOLTAGE WAVEFORMS

−3 V

−3 V

3 V

3 V

0 V

3 V

Output

Input

V

OL

V

OH

t

TLH

Generator

(see Note B)

R

L

3 V

FORCEOFF

RS-232
Output

t

THL

C

L

(see Note A)

SR(tr) 

6 V

t

THL

or t

TLH

50 Ω

TEST CIRCUIT VOLTAGE WAVEFORMS

0 V

3 V

Output

Input

V

OL

V

OH

t

PLH

Generator

(see Note B)

R

L

3 V

FORCEOFF

RS-232
Output

t

PHL

C

L

(see Note A)

50%

50%

1.5 V

1.5 V

TEST CIRCUIT VOLTAGE WAVEFORMS

50 Ω

−3 V

3 V

Output

Input

V

OL

V

OH

t

PHL

Generator

(see Note B)

t

PLH

Output

C

L

(see Note A)

3 V or 0 V

FORCEON

3 V

FORCEOFF

1.5 V 1.5 V

50% 50%

3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

PARAMETER MEASUREMENT INFORMATION

A. CLincludes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO= 50 Ω , 50% duty cycle, tr≤ 10 ns,

tf≤ 10 ns.

Figure 1. Driver Slew Rate

MAX3238E

A. CLincludes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO= 50 Ω , 50% duty cycle, tr≤ 10 ns,

tf≤ 10 ns.

Figure 2. Driver Pulse Skew

A. CLincludes probe and jig capacitance.
B. The pulse generator has the following characteristics: ZO= 50 Ω , 50% duty cycle, tr≤ 10 ns, tf≤ 10 ns.

Figure 3. Receiver Propagation Delay Times

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TEST CIRCUIT

50 Ω

Generator

(see Note B)

3 V or 0 V

3 V or 0 V

FORCEON

FORCEOFF

R

L

S1

V

CC

GND

C

L

(see Note A)

Output

VOLTAGE WAVEFORMS

Output

V

OL

V

OH

3 V

0 V

0.3 V

Output

Input

0.3 V

1.5 V 1.5 V

50%

t

PHZ

(S1 at GND)

t

PLZ

(S1 at VCC)

50%

t

PZL

(S1 at VCC)

MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

PARAMETER MEASUREMENT INFORMATION (continued)

A. CLincludes probe and jig capacitance.
B. The pulse generator has the following characteristics: ZO= 50 Ω , 50% duty cycle, tr≤ 10 ns, tf≤ 10 ns.
C. t
D. t

and t

PLZ

and t

PZL

are the same as t

PHZ

are the same as ten.

PZH

.

dis

Figure 4. Receiver Enable and Disable Times

10

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TEST CIRCUIT

50 Ω

Generator

(see Note B)

FORCEOFF

ROUT

FORCEON

Auto-

powerdown

Plus

INVALID

DOUTDIN

C

L

= 30 pF

(see Note A)

2.7 V

−2.7 V

0.3 V

−0.3 V

0 V

Valid RS-232 Level, INVALID High

Indeterminate

Indeterminate

If Signal Remains Within This Region
For More Than 30 µs, INVALID Is Low

†

Valid RS-232 Level, INVALID High

†

Auto-powerdown plus disables drivers and reduces
supply current to 1 µA.

NOTES: A. CL includes probe and jig capacitance.

B. The pulse generator has the following

characteristics: PRR = 5 kbit/s, ZO = 50 Ω, 50%
duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.

−2.7 V

Receiver

Input

−3 V

3 V

2.7 V

t

valid

V

CC

0 V

INVALID

Output

3 V to 5 V

50%50%

0 V

0 V
0 V

50% 50%

Driver

Input

≈5.5 V

Driver

Output

≈ −5.5 V

Supply

Voltages

t

dis

t

en

t

dis

t

en

V+

V−

V+ −0.3 V

V− +0.3 V

Voltage W aveforms and Timing Diagrams

t

invalid

V+

V−

3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

PARAMETER MEASUREMENT INFORMATION (continued)

MAX3238E

WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

Figure 5. INVALID Propagation-Delay Times and Supply-Enabling Time

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V

CC

C1 C2, C3, and C4

3.3 V ± 0.15 V

3.3 V ± 0.3 V
5 V ± 0.5 V

3 V to 5.5 V

0.1 µF

0.22 µF

0.047 µF

0.22 µF

0.1 µF

0.22 µF

0.33 µF
1 µF

V

CC

vs CAPACITOR VALUES

Auto-

powerdown

Plus

+

−

+

−

+

−

+

−

+

−

4

5

6

7

8

9

10

11

12

13
14

3

1

2

28
27

26

24

25

23

22

21

20

19

18

17

16

15

C2

C

BYPASS

= 0.1 µF

C1

C4

C2+

GND

C2−

V−

C1+

V+

V

CC

C1−

DIN1

DIN2

DIN3

ROUT1

ROUT2

DIN4

ROUT3

DIN5

ROUT1B

INVALID

DOUT1

DOUT2

DOUT3

RIN1

RIN2

DOUT4

RIN3

DOUT5

FORCEON

FORCEOFF

5 kΩ

5 kΩ

5 kΩ

†

C3 can be connected to VCC or GND.

NOTES: A. Resistor values shown are nominal.

B. Nonpolarized ceramic capacitors are acceptable. If polarized tantalum

or electrolytic capacitors are used, they should be connected as
shown.

C3

†

Logic I/Os

RS-232 Port

MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV ESD (HBM) PROTECTION

SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006

APPLICATION INFORMATION

12

Figure 6. Typical Operating Circuit and Capacitor Values

Submit Documentation Feedback

PACKAGE OPTION ADDENDUM

www.ti.com

1-Mar-2007

PACKAGING INFORMATION

Orderable Device Status

(1)

Package

Type

Package
Drawing

Pins Package

Qty

Eco Plan

MAX3238ECDB ACTIVE SSOP DB 28 50 Green (RoHS &

no Sb/Br)

MAX3238ECDBR ACTIVE SSOP DB 28 2000 Green (RoHS &

no Sb/Br)

MAX3238ECDW ACTIVE SOIC DW 28 20 Green (RoHS &

no Sb/Br)

MAX3238ECDWR ACTIVE SOIC DW 28 1000 Green (RoHS &

no Sb/Br)

MAX3238ECPW ACTIVE TSSOP PW 28 50 Green (RoHS &

no Sb/Br)

MAX3238ECPWG4 ACTIVE TSSOP PW 28 50 Green (RoHS &

no Sb/Br)

MAX3238ECPWR ACTIVE TSSOP PW 28 2000 Green (RoHS &

no Sb/Br)

MAX3238ECPWRG4 ACTIVE TSSOP PW 28 2000 Green (RoHS &

no Sb/Br)

MAX3238EIDB ACTIVE SSOP DB 28 50 Green (RoHS &

no Sb/Br)

MAX3238EIDBR ACTIVE SSOP DB 28 2000 Green (RoHS &

no Sb/Br)

MAX3238EIDW ACTIVE SOIC DW 28 20 Green (RoHS &

no Sb/Br)

MAX3238EIDWR ACTIVE SOIC DW 28 1000 Green (RoHS &

no Sb/Br)

MAX3238EIPW ACTIVE TSSOP PW 28 50 Green (RoHS &

no Sb/Br)

MAX3238EIPWG4 ACTIVE TSSOP PW 28 50 Green (RoHS &

no Sb/Br)

MAX3238EIPWR ACTIVE TSSOP PW 28 2000 Green (RoHS &

no Sb/Br)

MAX3238EIPWRG4 ACTIVE TSSOP PW 28 2000 Green (RoHS &

no Sb/Br)

(1)

The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.

(2)

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

(3)

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.

1-Mar-2007

Addendum-Page 2

MECHANICAL DATA

MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001

DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE

28 PINS SHOWN

0,65

28

1

2,00 MAX

0,38
0,22

15

14

A

0,05 MIN

0,15

5,60
5,00

M

8,20
7,40

Seating Plane

0,10

0,25
0,09

0°–ā8°

Gage Plane

0,25

0,95
0,55

PINS **

DIM

A MAX

A MIN

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-150

14

6,50

6,50

5,905,90

2016

7,50

6,90

24

8,50

28

10,50

9,907,90

30

10,50

9,90

38

12,90

12,30

4040065 /E 12/01

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MECHANICAL DATA

MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999

PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE

14 PINS SHOWN

0,65

1,20 MAX

14

0,30
0,19

8

4,50
4,30

PINS **

7

Seating Plane

0,15

0,05

8

1

A

DIM

6,60
6,20

14

0,10

M

0,10

0,15 NOM

2016

0°–8°

Gage Plane

24

0,25

0,75
0,50

28

A MAX

A MIN

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153

3,10

2,90

5,10

4,90

5,10

4,90

6,60

6,40

7,90

7,70

9,80

9,60

4040064/F 01/97

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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