The ADM3485E is a low power, differential line transceiver that operates with a single 3.3 V power supply. Low power consumption makes it ideal for power-sensitive applications. It is suitable for communication on multipoint bus transmission lines. Internal protection against electrostatic discharge (ESD) and electrical fast transient (EFT) allows operation in electrically harsh environments. It is intended for balanced data transmission and complies with both EIA Standards RS-485 and RS-422. It contains a differential line driver and a differential line receiver, and is suitable for half-duplex data transfer. The input impedance is 19 k following up to 50 transceivers to be connected on the bus.