The SN65176B and SN75176B differential bus transceivers are designed for bidirectional data communication on multipoint bus transmission lines. They are designed for balanced transmission lines and meet ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A and ITU Recommendations V.11 and X.27.
●The SN65176B and SN75176B devices combine 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 differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus when the driver is disabled or VCC = 0. These ports feature wide positive and negative common-mode voltage ranges, making the device suitable for party-line applications.
●The driver is designed for up to 60 mA of sink or source current. The driver features positive and negative current limiting and thermal shutdown for protection from line-fault conditions. Thermal shutdown is designed to occur at a junction temperature of approximately 150°C. The receiver features a minimum input impedance of 12 kΩ, an input sensitivity of ±200 mV, and a typical input hysteresis of 50 mV.
● Bidirectional Transceivers
● Meet or Exceed the Requirements of ANSI
●Standards TIA/EIA-422-B and TIA/EIA-485-A
●and ITU Recommendations V.11 and X.27
● Designed for Multipoint Transmission on
●Long Bus Lines in Noisy Environments
● 3-State Driver and Receiver Outputs
● Individual Driver and Receiver Enables
● Wide Positive and Negative Input/Output Bus Voltage Ranges
● ± 60-mA Max Driver Output Capability
● Thermal Shutdown Protection
● Driver Positive and Negative Current Limiting
● 12-kΩ Min Receiver Input Impedance
● ± 200-mV Receiver Input Sensitivity
● 50-mV Typ Receiver Input Hysteresis
● Operate From Single 5-V Supply
