75ALS174A

Product Folder Order Now Technical Documents Tools & Software Support & Community 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. Spacer 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 ...