Differential Bus Transceiver

The SN65ALS1176 differential bus transceiver is designed

for bidirectional data communication on multipoint bus

transmission lines. The device 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 an excellent choice for party-line

applications.

The SN65ALS1176 is characterized for operation

from – 25°C to 85°C.