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C2+

C2−

V−

RIN1

RIN2

RIN3

RIN4

RIN5

DOUT1

DOUT2

DOUT3

DIN3

DIN2

DIN1

C1+

V+

VCC

GND

C1−

FORCEON

FORCEOFF

INVALID

ROUT2B

ROUT1

ROUT2

ROUT3

ROUT4

ROUT5

DB OR PW PACKAGE

(TOP VIEW)

DESCRIPTION

MAX3243-EP

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

WITH

±15-kV ESD (HBM) PROTECTION

SGLS328A – MARCH 2006 – REVISED MAY 2006

•

Applications

•

Controlled Baseline

– Battery-Powered Systems, PDAs,

Notebooks, Laptops, Palmtop PCs, and

– One Assembly/Test Site, One Fabrication

Hand-Held Equipment

Site

•

Extended Temperature Performance of -55

°C

to 125

°C

•

Enhanced Diminishing Manufacturing

Sources (DMS) Support

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Enhanced Product-Change Notification

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Qualification Pedigree (1)

•

Single-Chip and Single-Supply Interface

for IBM™ PC/AT™ Serial Port

•

RS-232 Bus-Pin ESD Protection Exceeds

±15 kV Using Human-Body Model (HBM)

•

D Meets or Exceeds the Requirements of

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

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Operates With 3-V to 5.5-V V

CC Supply

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Three Drivers and Five Receivers

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Low Standby Current . . . 1 mA Typical

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External Capacitors . . . 4

× 0.1 mF

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Accepts 5-V Logic Input With 3.3-V Supply

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Always-Active Noninverting Receiver

Output (ROUT2B)

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Serial-Mouse Driveability

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Auto-Powerdown Feature to Disable Driver

Outputs When No Valid RS-232 Signal Is

Sensed

(1)

Component qualification in accordance with JEDEC and

industry standards to ensure reliable operation over an

extended temperature range. This includes, but is not limited

to, Highly Accelerated Stress Test (HAST) or biased 85/85,

temperature cycle, autoclave or unbiased HAST,

electromigration, bond intermetallic life, and mold compound

life. Such qualification testing should not be viewed as

justifying use of this component beyond specified

performance and environmental limits.

The MAX3243 consists of three line drivers, five line receivers, and a dual charge-pump circuit with

±15-kV ESD

(HBM) 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. This combination of drivers and receivers matches that needed for the typical serial port

used in an IBM PC/AT or compatible. 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 (ROUT2B),

which allows applications using the ring indicator to transmit data while the device is powered down.

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.

IBM, PC/AT are trademarks of IBM.

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.