DESCRIPTION

The ST485 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.

■ 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 64 TRANSCEIVERS ON THE BUS