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DB, DW, OR PW PACKAGE

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EN

C1+

V+

C1−

C2+

C2−

V−

DOUT2

RIN2

ROUT2

FORCEOFF

GND

DOUT1

RIN1

ROUT1

FORCEON

DIN1

DIN2

INVALID

NC − No internal connection

RHL PACKAGE

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NC

GND

DOUT1

RIN1

ROUT1

FORCEON

DIN1

NC

DIN2

C1+

NC

V+

C1–

C2+

C2–

V–

DOUT2

NC

RIN2

Flexible control options for power management are available when the serial port is inactive. The

MAX3223E

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

WITH

±15-kV ESD PROTECTION

SLLS707 – JANUARY 2006

•

ESD Protection for RS-232 Bus Pins

–

±15-kV Human-Body Model (HBM)

–

±8-kV IEC61000-4-2, Contact Discharge

–

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

•

Meets or Exceeds the Requirements of

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

•

•

Operates up to 500 kbit/s

•

Two Drivers and Two Receivers

•

Low Standby Current . . . 1

µA Typ

•

External Capacitors . . . 4

× 0.1 µF

•

Accepts 5-V Logic Input With 3.3-V Supply

•

Alternative High-Speed Pin-Compatible Device

(1 Mbit/s) for SNx5C3223E

•

Battery-Powered Systems

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PDAs

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Notebooks

•

Laptops

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Palmtop PCs

•

Hand-Held Equipment

The MAX3223E consists of two line drivers, two 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. The device operates at

typical data signaling rates up to 500 kbit/s and a

maximum of 30-V/

µs driver output slew rate.

auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of

operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF is

set low and EN is high, both drivers and receivers are shut off, and the supply current is reduced to 1 mA.

Disconnecting the serial port or turning off the peripheral drivers causes auto-powerdown to occur.

Auto-powerdown can be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled,

the device is activated automatically when a valid signal is applied to any receiver input. The INVALID output is

used to notify the user if an RS-232 signal is present at any receiver 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

µs. INVALID is low (invalid data) if the receiver input voltage is between –0.3 V and 0.3 V for more than

30

µs. Refer to Figure 4 for receiver input levels.

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.