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 300µA (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 applciations).

■ LOW QUIESCENT CURRENT: 300µA
■ 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