The ST485E is al low power transceiver for RS485 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.
●This transceiver draws 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 places the driver outputs into a high-impedance state.
●The ST485E is designed for bi-directional data communications on multipoint bus transmission line (half-duplex applciations).
●Key Features
● Allows up to 256 transceivers on the bus
● ESD protection: ±15KV (H.B.M.) ±8KV (IEC-1000-4-2 contact discharge)
● Operate from a single 5V supply
● 30ns propagation delay, 5ns skew
● Low quiescent current: 300µA
● -7V to 12V common mode input voltage range
● Designed for RS-485 interface application
● 70mV tipycal input hysteresis
● Current limiting and thermal shutdown for driver overload protection
● Driver maintains high impedance in 3-state or with the power OFF
