MAX3162 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

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MAX3162

+3.0V to +5.5V, 1µA, RS-232/RS-485/422 Multiprotocol Transceivers

Maxim Integrated 

19-1722; Rev 1; 9/00

+3.0V to +5.5V, 1µA, RS-232/RS-485/422

Multiprotocol Transceivers

General Description

The MAX3160/MAX3161/MAX3162 are programmable

RS-232/RS-485/422 multiprotocol transceivers. The

MAX3160/MAX3161 are pin programmable as a 2Tx/2Rx

RS-232 interface or a single RS-485/422 transceiver. The

MAX3162 is configured as a 2Tx/2Rx RS-232 interface

and a single RS-485/422 transceiver simultaneously.

All devices incorporate a proprietary low-dropout trans-

mitter output stage and an on-board dual charge pump

to allow RS-232 and RS-485/422 compliant perfor-

mance from a +3V to +5.5V supply. The receivers

feature true fail-safe circuitry that guarantees a logic-

high receiver output when the receiver inputs are open

or shorted. These devices also feature pin-selectable

transmitter slew rates for both RS-232 and RS-485/422

modes. Slew-rate limiting minimizes EMI and reduces

reflections caused by improperly terminated cables,

allowing error-free data transmission up to 250kbps.

Disabling slew-rate limiting allows these devices to

transmit at data rates up to 10Mbps in RS-485/422

mode and up to 1Mbps in RS-232 mode. The

MAX3160/MAX3161/MAX3162 feature a 1µA shutdown

mode, and short-circuit limiting and thermal shutdown

circuitry to protect against excessive power dissipation.

The MAX3160/MAX3162 offer a flow-through pinout that

facilitates board layout. The MAX3160/MAX3161/

MAX3162 are available in tiny SSOP packages and

operate over the commercial and extended tempera-

ture ranges.

________________________Applications

Point-of-Sales Equipment Peripherals

Industrial Controls

Networking

RS-232 to RS-485

Interface Converters

PART

MAX3160CAP

MAX3160EAP

MAX3161CAG

MAX3161EAG

MAX3162CAI

MAX3162EAI

Ordering Information

TEMP. RANGE

0°C to +70°C

-40°C to +85°C

0°C to +70°C

-40°C to +85°C

0°C to +70°C

-40°C to +85°C

PIN-PACKAGE

20 SSOP

20 SSOP

24 SSOP

24 SSOP

28 SSOP

28 SSOP

Features

o Single-Supply Operation from +3V to +5.5V

o Pin-Programmable as 2Tx/2Rx RS-232 or Single

RS-485/422 (MAX3160/MAX3161)

o 2Tx/2Rx RS-232 and Single RS-485/422 (MAX3162)

o Pin-Programmable RS-232/RS-485 Transmitter

Slew Rates Reduce EMI

o 10Mbps RS-485 and 1Mbps RS-232 Data Rates

o Pin-Programmable Half-Duplex or Full-Duplex

RS-485/422 Operation (MAX3160/MAX3161)

o RS-485/422 True Fail-Safe Receivers

o Transmitters and Receivers Protected Against

Wiring Faults

o 1µA Shutdown Supply Current

o 1/8-Unit Load Allows up to 256 Transceivers on

the Bus

Typical Operating Circuit

+3V TO +5.5V

1

VCC

RS485/RS-232 11

Tx DI/T1IN

13

16

RTS DE/T2IN

MAX3160

MAX3100

11

Rx

15

RO/R2OUT

12

8

CTS R1OUT

10

7

GND FAST HDPLX SHDN

SPI

4 10 12 9

Z(B)/T1OUT

5

Y(A)/T2OUT

6

A/R2IN

13

B/R1IN

14

DB9

RJ45

SHDN

µP

Pin Configurations appear at end of data sheet.

Selector Guide appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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