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 5 mA (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5 V supply.

FEATUREs
■ Low supply current: 5 mA max
■ -7 V to 12 V common mode input voltage range
■ 70 mV typical input hysteresis
■ Designed for 25 Mbps operation
■ Operate from a single 5 V supply
■ ±4 kV ESD protection
■ Current limiting and thermal shutdown for driver overload protection