Description
The ST75C176 is al low power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver.
This transceiver draw 300mA (typ.) of supply current when unloaded or fully loaded with disabled drivers.
It operates from a single 5V supply.
Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that placed the driver outputs into a high-impedance state. The receiver input has a fail safe feature that guarantees a logic-high output if the input is open circuit.
The ST75C176 is designed for bi-directional data communications on multipoint bus transmission line (half-duplex applications).

General features
■ Low quiescent current: 300mA
■ Designed for RS-485 interface applications
■ -7V to 12V common mode input voltage range
■ Driver maintains high impedance in 3-state or with the power OFF
■ 70mV typical input hysteresis
■ 30ns propagation delays, 5ns skew
■ Operate from a single 5V supply
■ Current limiting and thermal shutdown for driver overload protection
■ Allows up to 32 transceivers on the bus
■ Bic mos technology