SN75172

QUADRUPLE DIFFRENTIAL LINE DRIVER

SLLS038B – OCTOBER 1980 – REVISED MAY 1995

1

POST OFFICE BOX 655303

ANSI Standards EIA/TIA-422-B and RS-485

and ITU Recommendation V.11

Long Bus Lines in Noisy Environments

– 7 V to 12 V

description

The

SN75172

is

a

monolithic

quadruple

differential line driver with 3-state outputs. It is

designed to meet the requirements of ANSI

Standards EIA/TIA-422-B and RS-485 and ITU

Recommendation V.11. The device is optimized

for balanced multipoint bus transmission at rates

of up to 4 megabaud. Each driver features wide

positive and negative common-mode output

voltage ranges, making it suitable for party-line

applications in noisy environments.

The SN75172 provides positive- and negative-current limiting and thermal shutdown for protection from line

fault conditions on the transmission bus line. Shutdown occurs at a junction temperature of approximately

150

°C. This device offers optimum performance when used with the SN75173 or SN75175 quadruple

differential line receivers.

The SN75172 is characterized for operation from 0

°C to 70°C.

FUNCTION TABLE

(each driver)

INPUT

ENABLES

OUTPUTS

INPUT

A

G

G

Y

Z

H

H

X

H

L

L

H

XL

H

H

X

LH

L

L

X

LL

H

X

L

H

Z

Z

H = high level, L = low level, X = irrelevant,

Z = high impedance (off)

Copyright

© 1995, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1A

1Y

1Z

G

2Z

2Y

2A

GND

4A

4Y

4Z

G

3Z

3Y

3A

N PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

1A

1Y

NC

1Z

G

2Z

NC

2Y

2A

GND

4A

4Y

NC

4Z

G

3Z

NC

3Y

3A

DW PACKAGE

(TOP VIEW)

NC – No internal connection