The SN65ALS1176 differential bus transceiver is designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and meets TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendations V.11 and X.27.

The SN65ALS1176 combines a 3-state differential line driver and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, that can be connected together externally to function as a direction control. The driver differential outputs and the receiver differential inputs are connected internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus when the driver is disabled or VCC = 0. This port features wide positive and negative common-mode voltage ranges, making the device suitable for party-line applications.

The SN65ALS1176 is characterized for operation from -25°C to 85°C.

• Meets or Exceeds the Requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendations V.11 and X.27
• Recommended for PROFIBUS Applications
• Operates at Data Rates up to 35 MBaud
• Operating Temperature Range ...-25°C to 85°C
• Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments
• Low Supply-Current Requirement ...30 mA Max
• Wide Positive and Negative Input/Output Bus-Voltage Ranges
• Thermal-Shutdown Protection
• Driver Positive- and Negative-Current Limiting
• Receiver Input Hysteresis
• Glitch-Free Power-Up and Power-Down Protection
• Receiver Open-Circuit Fail-Safe Design
• Package Options Include Plastic Small-Outline (D) Package and (P) DIPs