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Description

The ST485E is al low power transceiver for RS-485 and RS-422 communication. Each driver output and receiver input is protected against ±15KV electrostatic discharge (H.B.M.) ±8KV (IEC-1000-4-2 contact discharge) shocks, without latchup. These parts contain one driver and one receiver.

General features

■ Low quiescent current: 300μA

■ Designed for RS-485 interface application

■ -7V to 12V common mode input voltage range

■ Driver maintains high impedance in 3-state or with the power OFF

■ 70mV tipycal input hysteresis

■ 30ns propagation delay, 5ns skew

■ Operate from a single 5V supply

■ Current limiting and thermal shutdown for driver overload protection

■ ESD protection:

– ±15KV (H.B.M.)

– ±8KV (IEC-1000-4-2 contact discharge)

■ Allows up to 256 transceivers on the bus