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
ST Microelectronics
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