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LT1331

3V RS562 or 5V/3V RS232 Transceiver with One Receiver Active in Shutdown

Linear Technology 

LT1331

U

PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.

SW Package

28-Lead Plastic Small Outline (Wide 0.300)

(LTC DWG # 05-08-1620)

0.291 – 0.299**

(7.391 – 7.595)

0.010

(0.254

–

–

0.029

0.737)

×

45°

0° – 8°

TYP

0.093 – 0.104

(2.362 – 2.642)

0.037 – 0.045

(0.940 – 1.143)

0.050

0.009 – 0.013

(0.229 – 0.330)

NOTE 1

(1.270)

TYP 0.014 – 0.019

0.016 – 0.050

(0.356 – 0.482)

NOTE:

(0.406 – 1.270)

TYP

1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.

THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS

0.004 – 0.012

(0.102 – 0.305)

*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

0.697 – 0.712*

(17.70 – 18.08)

28 27 26 25 24 23 22 21 20 19 18 17 16 15

NOTE 1

0.394 – 0.419

(10.007 – 10.643)

1 2 3 4 5 6 7 8 9 10 11 12 13 14

S28 (WIDE) 0996

TYPICAL APPLICATI

Mixed 5V/3V Supply Operation

+

0.1µF

+

2 × 0.1µF

V+ 1

VCC = 5V

2

3

4

TO LINE

5

DRIVER 1 OUT

RX1 IN 6

DRIVER 2 OUT 7

RX2 IN 8

RX3 IN 9

RX4 IN 10

DRIVER 3 OUT 11

12

RX5 IN (LOW-Q)

ON/OFF 13

14

VL = 3.3V

LT1331

28 V –

27

0.1µF

26

2 × 0.1µF

25

DRIVER 1 IN

24 RX1 OUT

23 DRIVER 2 IN

22 RX2 OUT

21 RX3 OUT

20 RX4 OUT

19 DRIVER 3 IN

18 RX5 OUT (LOW-Q)

17

GND

16

DRIVER DISABLE

15

NC

TO LOGIC

1331 TA03

RECEIVER

OUTPUT

CL = 50pF

DRIVER

OUTPUT

RL = 3k

CL = 2500pF

INPUT

1331 TA04

RELATED PARTS

PART NUMBER

LT1130A/LT1140A

LT1137A

LTC1349

LTC1385

LT1780/LT1781

DESCRIPTION

5V RS232 Transceivers with Small Capacitors

3-DR/5-RX RS232 Transceiver

5V Low Power, 3-DR/5-RX RS232 Transceiver

3.3V Low Power EIA/TIA-562 Transceiver

2-DR/2-RX RS232 Transceivers

COMMENTS

10kV ESD

15kV ESD

2 RXs Active in Shutdown

15kV ESD

8

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408)432-1900q FAX:(408)434-0507 q www.linear-tech.com

1331fa LT/TP 0998 REV A 2K • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 1993

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