8

LT1331

PACKAGE DESCRIPTIO

Dimensions in inches (millimeters) unless otherwise noted.

© LINEAR TECHNOLOGY CORPORATION 1993

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

SW Package

28-Lead Plastic Small Outline (Wide 0.300)

(LTC DWG # 05-08-1620)

S28 (WIDE) 0996

0.037 – 0.045

(0.940 – 1.143)

0.004 – 0.012

(0.102 – 0.305)

0.093 – 0.104

(2.362 – 2.642)

0.050

(1.270)

TYP 0.014 – 0.019

(0.356 – 0.482)

TYP

NOTE 1

0.697 – 0.712*

(17.70 – 18.08)

1

23

4

5

6

78

0.394 – 0.419

(10.007 – 10.643)

910

25

26

11

12

22

21

20

19

18

17

16

15

23

24

14

13

27

28

0

° – 8°

TYP

NOTE 1

0.009 – 0.013

(0.229 – 0.330)

0.016 – 0.050

(0.406 – 1.270)

0.291 – 0.299**

(7.391 – 7.595)

× 45°

0.010 – 0.029

(0.254 – 0.737)

NOTE:

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

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

*

**

APPLICATI

TYPICAL

Mixed 5V/3V Supply Operation

INPUT

DRIVER

OUTPUT

RECEIVER

OUTPUT

1331 TA04

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

DRIVER 1 IN

RX1 OUT

DRIVER 2 IN

RX2 OUT

RX3 OUT

RX4 OUT

DRIVER 3 IN

0.1

µF

2

× 0.1µF

2

× 0.1µF

0.1

µF

GND

DRIVER DISABLE

NC

TO LINE

TO LOGIC

1331 TA03

RX5 OUT (LOW-Q)

LT1331

DRIVER 1 OUT

RX1 IN

DRIVER 2 OUT

RX2 IN

RX3 IN

RX4 IN

DRIVER 3 OUT

RX5 IN (LOW-Q)

ON/OFF

+

+

PART NUMBER

DESCRIPTION

COMMENTS

LT1130A/LT1140A

5V RS232 Transceivers with Small Capacitors

10kV ESD

LT1137A

3-DR/5-RX RS232 Transceiver

15kV ESD

LTC1349

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

2 RXs Active in Shutdown

LTC1385

3.3V Low Power EIA/TIA-562 Transceiver

LT1780/LT1781

2-DR/2-RX RS232 Transceivers

15kV ESD

RELATED PARTS

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417