SN75ALS172A

QUADRUPLE DIFFERENTIAL LINE DRIVER

SLLS121D – AUGUST 1990 – REVISED APRIL 1998

1

POST OFFICE BOX 655303

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

Recommendation V.11

Circuitry

Serial and Parallel Applications

Long Bus Lines in Noisy Environments

55 mA Max

Bus-Voltage Ranges

Limiting

description

The SN75ALS172A comprises four line drivers

with

3-state

differential

outputs.

They

are

designed to meet the requirements of ANSI

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

Recommendation V.11. This device is optimized

for balanced multipoint bus transmission at rates

of up to 20 Mbaud. Each driver features wide

positive and negative common-mode output

voltage ranges, making it suitable for party-line

applications in noisy environments.

The SN75ALS172A 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.

The SN75ALS172A is characterized for operation from 0

°C to 70°C.

Copyright

© 1998, 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.

DW PACKAGE

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1A

1Y

NC

1Z

G

2Z

NC

2Y

2A

GND

4A

4Y

NC

4Z

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NC – No internal connection