SN75276

SN75276 FAIL-SAFE DIFFERENTIAL BUS TRANSCEIVER D Bidirectional Transceiver With Fail-Safe Receiver D Meets or Exceeds the Requirements of ITU Recommendation V.11 D Electrically Compatible With ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A D Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments D 3-State Driver and Receiver Outputs D Individual Driver and Receiver Enables D Wide Positive and Negative Input/Output Bus Voltage Ranges D Driver Output Capability . . . ± 60 mA Max D Thermal Shutdown Protection D Driver Positive and Negative Current Limiting D Receiver Input Impedance . . . 12 kΩ Min D Receiver Input Sensitivity . . . – 300 mV/0 mV D Operates From Single 5-V Supply D Pin-to-Pin Compatible With SN75176A SLLS212B – SEPTEMBER 1995 – REVISED APRIL 1998 D OR P PACKAGE (TOP VIEW) R1 RE 2 DE 3 D4 8 VCC 7B 6A 5 GND description The SN75276 differential bus transceiver is a monolithic, integrated circuit designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and is electrically compatible with ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A, and meets ITU Recommendation V.11. The fail-safe operation ensures a known level on the circuit output under bus fault conditions. The circuit provides a high-level output under floating-line, idle-line, open-circuit, and short-circuit bus conditions (see Function Tables). The SN75276 combines a 3-state, differential line driver and a ...