DESCRIPTION
The ST490A is a low power transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in full duplex configuration. The ST490A draws 5mA (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5V supply.

■ LOW SUPPLY CURRENT: 5mA MAX
■ -7 TO 12 COMMON MODE INPUT VOLTAGE RANGE
■ 70mV TYPICAL INPUT HYSTERESIS
■ DESIGNED FOR 25Mbps OPERATION
■ OPERATE FROM SINGLE 5 SUPPLY
■ ±4kV ESD PROTECTION
■ CURRENT LIMITING AND THERMAL SHUTDOWN FOR DRIVER OVERLOAD PROTECTION