SN75174

QUADRUPLE DIFFERENTIAL LINE DRIVER

SLLS039B – 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

SN75174

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

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 SN75174 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 SN75174 is characterized for operation from 0

°C to 70°C.

FUNCTION TABLE

(each driver)

INPUT

ENABLE

OUTPUTS

INPUT

ENABLE

Y

Z

H

H

H

L

L

H

L

H

X

L

Z

Z

H = TTL high level, X = irrelevant,

L = TTL low level, 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

1, 2EN

2Z

2Y

2A

GND

4A

4Y

4Z

3, 4EN

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

1, 2EN

2Z

NC

2Y

2A

GND

4A

4Y

NC

4Z

3, 4EN

3Z

NC

3Y

3A

DW PACKAGE

(TOP VIEW)

NC – No internal connection