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C2 +

GND

C2−

V−

DOUT1

DOUT2

DOUT3

RIN1

RIN2

DOUT4

RIN3

DOUT5

EN

SHDN

C1+

V+

C1−

DIN1

DIN2

DIN3

ROUT1

ROUT2

DIN4

ROUT3

DIN5

ROUT1B

MBAUD

DB, DW, OR PW PACKAGE

(TOP VIEW)

QFN PACKAGE

(TOP VIEW)

C1–

DIN1

IN2

DIN3

ROUT1

ROUT2

DIN4

ROUT3

DOUT1

DOUT2

DOUT3

RIN1

RIN2

DOUT4

RIN3

NC

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DESCRIPTION

DESCRIPTION (CONTINUED)

MAX3237E

3-V TO 5.5-V MULTICHANNEL RS-232

1-MBit/s LINE DRIVER/RECEIVER

SLLS709A – MAY 2006 – REVISED OCTOBER 2006

•

Meets or Exceeds the Requirements of

•

ESD Protection for RS-232 I/O Pins and Logic

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

Input pins

•

Operates With 3-V to 5.5-V V

–

±15 kV – Human-Body Model (HBM)

•

Operates From 250 kbits/s to 1 Mbit/s

–

±8 kV – IEC61000-4-2, Contact Discharge

•

Low Standby Current . . . 1

µA Typical

–

±15 kV – IEC61000-4-2, Air-Gap Discharge

•

External Capacitors . . . 4

× 0.1 µF

•

Accepts 5-V Logic Input With 3.3-V Supply

•

Battery-Powered, Hand-Held, and Portable

•

Designed to Be Interchangeable With Maxim

Equipment

MAX3237E

•

PDAs and Palmtop PCs

•

Latch-Up Performance Exceeds 100 mA Per

•

Notebooks, Sub-Notebooks, and Laptops

JESD 78, Class II

•

Digital Cameras

•

Mobile Phones and Wireless Devices

The MAX3237E consists of five line drivers, three line receivers, and a dual charge-pump circuit with

±15-kV

ESD protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of

TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the

serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to

5.5-V supply. This device operates at data signaling rates of 250 kbit/s in normal operating mode

The MAX3237E transmitters are disabled and the outputs are forced into high-impedance state when the device

is in shutdown mode (SHDN = GND) and the supply current falls to less than 1

µA. Also, during shutdown, the

can be placed in the high-impedance state by setting enable (EN) high. ROUT1B remains active all the time,

regardless of the EN and SHDN condition.

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.