Maxim MAX3318EEUP, MAX3318EEAP, MAX3317EEUP, MAX3317EEAP, MAX3317ECUP Datasheet

_______________General Description

The MAX3316E–MAX3319E are 2.5V powered RS-232
compatible transceivers. These devices feature shut­down (MAX3317E), AutoShutdown Plus™ (MAX3318E/
MAX3319E), and enhanced electrostatic discharge
(ESD) protection integrated into the chip. All transmitter
outputs and receiver inputs are protected to ±15kV
using the IEC 1000-4-2 Air-Gap Discharge method,
±8kV using the IEC 1000-4-2 Contact Discharge
method, and ±15kV using the Human Body Model.

All devices are guaranteed at a data rate of 460kbps.
The transceivers have a proprietary low-dropout trans­mitter output stage enabling RS-232 compatible opera­tion from a +2.25V to +3.0V supply with a dual charge
pump. The charge pump requires only four 0.1µF
capacitors. The MAX3318E/MAX3319E feature a logic­level output (READY) that asserts when the charge
pump is regulating and the device is ready to begin
transmitting.

The MAX3318E/MAX3319E achieve a 1µA supply current
using Maxim’s revolutionary AutoShutdown Plus feature.
These devices automatically enter a low-power shut­down mode when the RS-232 cable is disconnected or
the transmitters of the connected peripherals are inactive
for more than 30 seconds. They turn on again when
they sense a valid transition at any transmitter or receiver
input. AutoShutdown Plus saves power without
changes to the existing BIOS or operating system. The
MAX3317E also features a 1µA shutdown mode that
can be entered by driving SHDN low. The MAX3317E’s
receivers remain active while in shutdown mode, allowing
external devices such as modems to be monitored
using only 1µA supply current.

These devices are available in space-saving packages:
MAX3316E (16-pin SSOP and 20-pin TSSOP), MAX3317E/
MAX3318E (20-pin SSOP and 20-pin TSSOP), and
MAX3319E (16-pin SSOP).

________________________Applications

Palmtop Computers

Hand-Held Instruments

Pagers

Cellular Phones

GPS

Handy Terminals

Hand-Held Electronic Books

____________________________Features

♦ ESD Protection for RS-232 I/O Pins

±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge

♦ 300µA Operating Supply Current

♦ 1µA Low-Power Shutdown with Receivers Active

♦ Guaranteed 460kbps Data Rate

♦ Guaranteed 4V/µs Slew Rate

♦ RS-232 Compatible Down to 2.25V

MAX3316E–MAX3319E

±15kV ESD-Protected, 2.5V, 1µA, 460kbps,

RS-232 Compatible Transceivers

________________________________________________________________ Maxim Integrated Products 1

Pin Configurations

19-1616; Rev 0; 1/00

For free samples and the latest literature, visit www.maxim-ic.com or phone [phone].
For small orders, phone [phone].

Ordering Information

Selector Guide and Typical Application Circuits appear at
end of data sheet.

AutoShutdown Plus is a trademark of Maxim Integrated Products.

PART

MAX3316ECUP

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

20 TSSOP

MAX3316ECAE 0°C to +70°C 16 SSOP

MAX3316EEUP -40°C to +85°C 20 TSSOP

MAX3316EEAE -40°C to +85°C 16 SSOP

MAX3317ECUP

0°C to +70°C 20 TSSOP

MAX3317ECAP 0°C to +70°C 20 SSOP

MAX3317EEUP -40°C to +85°C 20 TSSOP

MAX3317EEAP -40°C to +85°C 20 SSOP

MAX3318ECUP

0°C to +70°C 20 TSSOP

MAX3318ECAP 0°C to +70°C 20 SSOP

MAX3318EEUP -40°C to +85°C 20 TSSOP

MAX3318EEAP -40°C to +85°C 20 SSOP

MAX3319ECAE

0°C to +70°C 16 SSOP

MAX3319EEAE -40°C to +85°C 16 SSOP

Pin Configurations continued at end of data sheet.

1

READY

2

C1+

3

V+

4

MAX3318E

5

C2+

6

C2-

7

V-

8

9

R2IN

10

SSOP/TSSOP

20

19

18

17

16

15

14

13

12

11

FORCEOFF

V

CC

GND

T1OUTC1-

R1IN

R1OUT

FORCEON

T1INT2OUT

T2IN

INVALIDR2OUT

±15kV ESD-Protected, 2.5V, 1µA, 460kbps,
RS-232 Compatible Transceivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +2.25V to +3.0V, C1–C4 = 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +2.5V,

T

A

= +25°C.)

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.

VCCto GND..............................................................-0.3V to +6V

V+ to GND (Note 1) ..................................................-0.3V to +7V

V- to GND (Note 1) ...................................................-7V to +0.3V

V+ + |V-| (Note 1) .................................................................+13V

Input Voltages

T_IN, EN, SHDN, FORCEON,

FORCEOFF to GND ...............................................-0.3V to +6V

R_IN to GND ..................................................................±25V

Output Voltages

T_OUT to GND............................................................±13.2V

R_OUT, INVALID, READY to GND .......-0.3V to (V

CC

+ 0.3V)

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

Continuous Power Dissipation (T

A

= +70°C)

16-Pin SSOP (derate 7.14mW/°C above +70°C) .......571mW

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

20-Pin TSSOP (derate 7.00mW/°C above +70°C) .....559mW

Operating Temperature Range

MAX331_EC_ _ .................................................0°C to +70°C

MAX331_EE_ _ ..............................................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

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

Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.

SHDN = GND (MAX3317E); FORCEOFF =
GND (MAX3318E/MAX3319E)

All transmitter outputs loaded with 3kΩ to
ground

FORCEON = GND, FORCEOFF = VCC,
all R_IN idle, all T_IN idle
(MAX3318E/MAX3319E)

TA= +25°C

TA= +25°C

TA= +25°C

EN = VCC(MAX3317E), receivers disabled

T_IN, EN, SHDN, FORCEON, FORCEOFF

SHDN = VCC, no load (MAX3317E);
FORCEON = FORCEOFF = V

CC

, no load

(MAX3318E/MAX3319E)

T_IN, EN, SHDN, FORCEON, FORCEOFF

I

OUT

= -0.5mA

T_IN, EN, SHDN, FORCEON, FORCEOFF

I

OUT

= 0.5mA

CONDITIONS

V

±3.7 ±4

Output Voltage Swing

kΩ

357

Input Resistance

V0.3Input Hysteresis

V

0.7 · V

CC

Input Threshold High

V

0.3 · V

CC

Input Threshold Low

V

-25 +25

Input Voltage Range

V

0.9 · V

CC

Output Voltage High

V

0.1 · V

CC

Output Voltage Low

µA

110

Shutdown Supply Current

µA

110

AutoShutdown Plus Supply
Current

µA

±0.05 ±10

Output Leakage Current

µA

±0.01 ±1

Input Leakage Current

V

0.3

Transmitter Input Hysteresis

mA

0.3 1

Supply Current

V

0.3 · V

CC

Input Logic Threshold Low

V

0.7 · V

CC

Input Logic Threshold High

UNITSMIN TYP MAXSYMBOL

LOGIC INPUTS

RECEIVER OUTPUTS

RECEIVER INPUTS

MAX3316E–MAX3319E

PARAMETER

DC CHARACTERISTICS (VCC= +2.5V, TA= +25°C)

TRANSMITTER OUTPUTS

MAX3316E–MAX3319E

±15kV ESD-Protected, 2.5V, 1µA, 460kbps,

RS-232 Compatible Transceivers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.25V to +3.0V, C1–C4 = 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +2.5V,

T

A

= +25°C.)

TIMING CHARACTERISTICS

(VCC= +2.25V to +3.0V, C1–C4 = 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +2.5V,

T

A

= +25°C.)

VCC= 0 or 2.25V to 3.0V, V

OUT

= ±12V,

transmitters disabled

VCC= 0, transmitter output = ±2V

CONDITIONS

µA

±25

Output Leakage Current

mA

±25 ±60

Output Short-Circuit Current

Ω

300 10M

Output Resistance

UNITSMIN TYP MAXSYMBOLPARAMETER

VCC= 2.5V, Figure 4b

I

OUT

= -0.5mA

I

OUT

= 0.5mA

Figure 4a

Figure 4a

µs

1

t

INVH

Receiver Positive or Negative
Threshold to INVALID High

V

0.9 · V

CC

INVALID, READY Output
Voltage High

V

0.1 · V

CC

INVALID, READY Output
Voltage Low

V

-0.3 0.3

Receiver Input Threshold to
INVALID Output Low

-2.7

V

2.7

Receiver Input Threshold to
INVALID Output High

Positive threshold

VCC= 2.5V, Figure 4b (Note 2)

VCC= 2.5V, Figure 4b (Note 2)

VCC= 2.5V, Figure 4b

Negative threshold

s

15 30 60

t

AUTO­SHDN

Receiver or Transmitter Edge to
Transmitters Shutdown

µs

100

t

WU

Receiver or Transmitter Edge to
Transmitters Enabled

µs

30

t

INVL

Receiver Positive or Negative
Threshold to INVALID Low

R_IN to R_OUT, CL= 150pF

RL= 3kΩ, CL= 1000pF, one transmitter
switching

Normal operation (MAX3317E)

Normal operation (MAX3317E)

(Note 3)

CONDITIONS

0.175

t

PLH

µs

0.175

t

PHL

kbps

460

Maximum Data Rate

Receiver Propagation Delay

ns

250

Receiver Output Enable Time

ns

250

Receiver Output Disable Time

ns

100

|t

PHL

- t

PLH

|

Transmitter Skew

ns

50

|t

PHL

- t

PLH

|

Receiver Skew

UNITSMIN TYP MAXSYMBOLPARAMETER

AutoShutdown Plus (FORCEON = GND, FORCEOFF = VCC) (MAX3318E/MAX3319E)

ESD PROTECTION

R_IN, T_OUT

±15

kV

±15

±8

Human Body Model

IEC 1000-4-2 Air-Gap Discharge method

IEC 1000-4-2 Contact Discharge method

MAX3316E–MAX3319E

±15kV ESD-Protected, 2.5V, 1µA, 460kbps,
RS-232 Compatible Transceivers

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= +2.5V, C1–C4 = 0.1µF, 460kbps data rate, all transmitters loaded with 3kΩ, TA= +25°C, unless otherwise noted.)

0

2

6

4

8

10

2.25 2.652.45 2.85 3.05 3.25 3.45 3.65

MAX3316E/MAX3317E

SUPPLY CURRENT vs. SUPPLY VOLTAGE

MAX3316E TOC01

VCC (V)

SUPPLY CURRENT (mA)

T1 TRANSMITTING AT SPECIFIED
DATA RATE
T2 TRANSMITTING AT 20kbps
C

L

= 1000pF

460kbps

230kbps

20kbps

-6

-2

-4

2

0

4

6

2.25 2.85 3.052.45 2.65 3.25 3.45 3.65

MAX3316E/MAX3317E

TRANSMITTER OUTPUT VOLTAGE

vs. SUPPLY VOLTAGE

MAX3316E TOC02

VCC (V)

TRANSMITTER OUTPUT VOLTAGE (V)

T_OUT+

T_OUT-

T1 TRANSMITTING AT 460kbps
T2 TRANSMITTING AT 20kbps
C

L

= 1000pF

-5

-2

-3

-4

-1

0

1

2

3

4

5

0 1000 2000 3000

MAX3316E/MAX3317E

TRANSMITTER OUTPUT VOLTAGE

vs. LOAD CAPACITANCE

MAX3316E TOC03

LOAD CAPACITANCE (pF)

TRANSMITTER OUTPUT VOLTAGE (V)

T_OUT+

T_OUT-

T1 TRANSMITTING AT 460kbps
T2 TRANSMITTING AT 20kbps

0

2

6

4

8

10

MAX3316E/MAX3317E

SLEW RATE vs. LOAD CAPACITANCE

MAX3316E TOC04

LOAD CAPACITANCE (pF)

SLEW RATE (V/µs)

0 20001000 3000

-SLEW

+SLEW

FOR DATA RATES UP TO 460kps

TIMING CHARACTERISTICS (continued)

(VCC= +2.25V to +3.0V, C1–C4 = 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +2.5V,

T

A

= +25°C.)

Note 2: A transmitter/receiver edge is defined as a transition through the transmitter/receiver input logic thresholds.
Note 3: Transmitter skew is measured at the transmitter zero crosspoints.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V/µs

430

VCC= 2.5V, TA= +25°C, RL= 3kΩ to 7kΩ,
measured from +3V to -3V or -3V to +3V,
C

L

= 150pF to 2500pF

Transition-Region Slew Rate

MAX3316E–MAX3319E

±15kV ESD-Protected, 2.5V, 1µA, 460kbps,

RS-232 Compatible Transceivers

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

(VCC= +2.5V, C1–C4 = 0.1µF, 460kbps data rate, all transmitters loaded with 3kΩ, TA= +25°C, unless otherwise noted.)

0

10

5

20

15

30

25

35

MAX3316E/MAX3317E

OPERATING SUPPLY CURRENT

vs. LOAD CAPACITANCE

MAX3316E TOC05

LOAD CAPACITANCE (pF)

SUPPLY CURRENT (mA)

0 1000 2000 3000

T1 TRANSMITTING AT SPECIFIED DATA RATE
T2 TRANSMITTING AT 20kbps

460kbps

230kbps

20kbps

MAX3318E/MAX3319E

TRANSMITTER OUTPUT VOLTAGE

vs. SUPPLY VOLTAGE

T_OUT+

T1 TRANSMITTING AT 460kbps
T2 TRANSMITTING AT 20kbps

= 1000pF

C

L

T_OUT-

2.25 2.85 3.052.45 2.65 3.25 3.45 3.65
VCC (V)

MAX3318E/MAX3319E

OPERATING SUPPLY CURRENT

vs. LOAD CAPACITANCE

T1 TRANSMITTING AT SPECIFIED
DATA RATE
T2 TRANSMITTING AT 20kbps

460kbps

230kbps

20kbps

0 1000 2000 3000

LOAD CAPACITANCE (pF)

MAX3318E/MAX3319E

TRANSMITTER OUTPUT VOLTAGE

vs. LOAD CAPACITANCE

5

4

3

2

T1 TRANSMITTING AT 460kbps

1

T2 TRANSMITTING AT 20kbps

0

-1

-2

-3

TRANSMITTER OUTPUT VOLTAGE (V)

-4

-5
0 1000 2000 3000

T_OUT+

T_OUT-

LOAD CAPACITANCE (pF)

15

12

9

6

SUPPLY CURRENT (mA)

3

0

10

8

MAX3316E TOC08

6

4

SLEW RATE (V/µs)

2

0

MAX3318E/MAX3319E

SUPPLY CURRENT vs. SUPPLY VOLTAGE

460kbps

230kbps

20kbps

T1 TRANSMITTING AT SPECIFIED
DATA RATE
T2 TRANSMITTING AT 20kbps

= 1000pF

C

L

2.25 2.652.45 2.85 3.05 3.25 3.45 3.65
VCC (V)

MAX3318E/MAX3319E

SLEW RATE vs. LOAD CAPACITANCE

-SLEW

+SLEW

FOR DATA RATES UP TO 460kbs

0 20001000 3000

LOAD CAPACITANCE (pF)

6

MAX3316E TOC06

MAX3316E TOC09

4

2

0

-2

-4

TRANSMITTER OUTPUT VOLTAGE (V)

-6

35

30

25

20

15

SUPPLY CURRENT (mA)

10

5

0

MAX3316E TOC07

MAX3316E TOC10