Description
The ST485E is a 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.) (ESD) shocks, without latch-up. These parts contain one driver and one receiver in half duplex configuration.
This transceiver draws 300µA (typ.) of supply current when unloaded or fully loaded with disabled drivers.

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 typical input hysteresis
■ 30ns propagation delay, 5ns skew
■ Operates 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 64 transceivers on the bus