1

2

3

4

5

10

9

8

7

6

GND

C1+

V-

TOUT

TIN

C1-

MAX3311

µMAX

TOP VIEW

RIN

ROUT

SHDN

General Description

The MAX3311/MAX3313 are low-power, +5V EIA/TIA-

232-compatible transceivers. Both devices have one

transmitter and one receiver. The transceivers have a

proprietary low-dropout transmitter output stage

enabling RS-232-compatible operation from a +5V sup-

ply with a single inverting charge pump. These devices

require only three 0.1µF capacitors and will run at data

rates up to 460kbps while maintaining RS-232-compati-

ble output levels.

The MAX3311 features a 1µA shutdown mode. In shut-

down the device turns off the charge pump, pulls V- to

ground, and the transmitter output is disabled. The

MAX3313 features an INVALID output that asserts high

when an active RS-232 cable signal is connected, sig-

naling to the host that a peripheral is connected to the

communication port.

________________________Applications

Digital Cameras

PDAs

GPS

POS

Telecommunications

Handy Terminals

Set-Top Boxes

Features

o 1µA Low-Power Shutdown (MAX3311)

o INVALID Output (MAX3313)

o Receiver Active in Shutdown (MAX3311)

o Single Transceiver (1Tx/1Rx) in 10-Pin µMAX

o RS-232-Compatible Operation

460kbps, 1µA Supply Current,

RS-232-Compatible Transceivers in µMAX

________________________________________________________________ Maxim Integrated Products

1

Pin Configurations

19-1901; Rev 0; 2/01

Ordering Information

PART

TEMP. RANGE

PIN-PACKAGE

MAX3311CUB

0

°C to +70°C

10 µMAX

MAX3311EUB

-40

°C to +85°C

10 µMAX

MAX3313CUB

0

°C to +70°C

10 µMAX

MAX3313EUB

-40

°C to +85°C

10 µMAX

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Pin Configurations continued at end of data sheet.

Typical Operating Circuit

C1

0.1

µF

C2

0.1

µF

0.1

µF

98

1

10

7

6

3

2

4

5

C1+

V-

TOUT

C1-

TIN

RIN

ROUT

GND

5k

Ω

SHDN (MAX3311)

INVALID (MAX3313)

+5V

MAX3311

MAX3313

CAPACITORS MAY BE POLARIZED OR NONPOLARIZED.