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SN75ALS174A
SLLS122F – JULY 1991 ...
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SN75ALS174A
SLLS122F – JULY 1991 – REVISED JANUARY 2018
SN75ALS174A Quadruple Differential Line Driver
1 Features
1 Meets or Exceeds the Requirements of ANSI EIA/TIA-422-B and RS-485
High-Speed Advanced Low-Power
Schottky Circuitry
Designed for up to 20-Mbit/s Operation in Both Serial and Parallel Applications
Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments
Low Supply Current Requirements 55 mA Max Wide Positive and Negative Input/Output Bus
Voltage Ranges Driver Output Capacity: 60 mA Thermal-Shutdown Protection Driver Positive- and Negative-Current Limiting Functionally Interchangeable With SN75174
2 Applications
Motor Drives Factory Automation and Control
3 Description
The SN75ALS174A is a quadruple line driver with tristate differential outputs. It is designed to meet the requirements of ANSI Standards EIA/TIA-422-B and RS-485. This device is optimized for balanced multipoint bus transmission at rates of up to 20 Mbit/s.
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Each driver features wide positive and negative common-mode output voltage ranges that make them suitable for party-line applications in noisy environments.
The SN75ALS174A provides positive- and negativecurrent 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 SN75ALS174A is characterized ...