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 shutdownfor protection from line-fault conditions. Thermalshutdown is designed to occur at a junctiontemperature of approximately 150°C. The receiverfeatures a minimum input impedance of 12 kΩ, an input sensitivity of ±200 mV, and a typical inputhysteresis of 50 mV.
Type | Description |
Part Status | Active |
Type | Transceiver |
Protocol | RS422, RS485 |
Number of Drivers/Receivers | 1/1 |
Duplex | Half |
Receiver Hysteresis | 50 mV |
Data Rate | - |
Voltage - Supply | 4.75V-5.25V |
Operating Temperature | -40°C - 105°C |
Mounting Type | Surface Mount |
Package / Case | 8-SOIC (0.154", 3.90mm Width) |
Supplier Device Package | 8-SOIC |