75ALS172A

SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 D Meets or Exceeds ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11 D High-Speed Advanced Low-Power Schottky Circuitry D Designed for 20-MBaud Operation in Both Serial and Parallel Applications D Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments D Low Supply-Current Requirements: 55 mA Max D Wide Positive and Negative Input/Output Bus-Voltage Ranges D Driver Output Capacity . . . ±60 mA D Thermal Shutdown Protection D Driver Positive and Negative Current Limiting D Logically Interchangeable With SN75172 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. N PACKAGE (TOP VIEW) 1A 1 1Y 2 1Z 3 G4 2Z 5 2Y 6 2A 7 GND 8 16 VCC 15 4A 14 4Y 13 4Z 12 G 11 3Z 10 3Y 9 3A DW PACKAGE (TOP VIEW) 1A 1 1Y 2 NC 3 1Z 4 G5 2Z 6 NC 7 2Y 8 2A 9 GND 10 20 VCC 19 4A 18 4Y 17 NC 16 4Z 15 G 14 3Z 13 NC 12 3Y 11 3A NC – No internal connection The SN75ALS172A provides positive- and negative-current limiting and thermal shutdown for protection from line-fault conditi...