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LT1537

Advanced Low Power 5V RS232 Transceiver with Small Capacitors

Linear Technology 

U

TYPICAL APPLICATIO S

Typical Mouse Driving Application

MOUSE

V+

LOGIC

OPTICS

V–

(1)

(5) (9)

DB9

+

V+ 1

0.1µF

5V VCC 2

+

3

2 × 0.1µF

4

DRIVER 1 OUT 5

DCD

RX1 IN 6

DSR

DRIVER 2 OUT 7

RX

RX2 IN 8

RTS

RX3 IN 9

TX

RX4 IN 10

CTS

DRIVER 3 OUT 11

DTR

RX5 IN 12

RI

ON/OFF = 5V 13

14

LT1537

LT1537

28 V–

27

26

2 × 0.1µF

0.1µF

25 DRIVER 1 IN

24 RX1 OUT

LOGIC “0”

23 DRIVER 2 IN

22 RX2 OUT

LOGIC “0”

21 RX3 OUT

20 RX4 OUT

MOUSE DATA

19 DRIVER 3 IN

18 RX5 OUT

LOGIC “1”

17 GND

16 DRIVER DISABLE

15

LT1137A • TA04

U

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

0.205 – 0.212*

(5.20 – 5.38)

0° – 8°

G Package

28-Lead SSOP

0.068 – 0.078

(1.73 – 1.99)

0.397 – 0.407*

(10.07 – 10.33)

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

0.301 – 0.311

(7.65 – 7.90)

0.005 – 0.009

(0.13 – 0.22)

0.022 – 0.037

(0.55 – 0.95)

0.0256

(0.65)

BSC

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).

0.010 – 0.015

(0.25 – 0.38)

0.002 – 0.008

(0.05 – 0.21)

28SSOP 0694

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

0.005

(0.127)

RAD MIN

0.291 – 0.299

(7.391 – 7.595)

(NOTE 2)

0.010 – 0.029 × 45°

(0.254 – 0.737)

0.093 – 0.104

(2.362 – 2.642)

0° – 8° TYP

S Package

28-Lead Plastic SOL

0.037 – 0.045

(0.940 – 1.143)

0.697 – 0.712

(17.70 – 18.08)

(NOTE 2)

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

NOTE 1

0.394 – 0.419

(10.007 – 10.643)

0.009 – 0.013

(0.229 – 0.330)

NOTE 1

0.016 – 0.050

(0.406 – 1.270)

0.050

(1.270)

TYP 0.014 – 0.019

(0.356 – 0.482)

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.

0.004 – 0.012

(0.102 – 0.305)

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

2. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).

SOL28 0392

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

7

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