The ADM483 series low power differential Line Transceiver suitable for half-duplex data communication on multipoint bus transmission lines. It is designed for balanced data transmission and complies with EIA Standards RS-485 and RS-422.The part contains a differential line driver and a differential line receiver. Both share the same differential pins, with either the driver or the receiver being enabled at any given time. It has an input impedance of 12kR, allowing up to 32 transceivers on one bus. Since only one driver should be enabled at any time, the output of a disabled or powered-down driver is three-stated to avoid overloading the bus. This high impedance driver output is maintained over the entire common-mode voltage range from -7 to +12V. The receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating).
● EIA RS-485/RS-422-compliant
● Up to 32 transceivers on one bus
● Outputs high-Z when disabled or powered-OFF
● Thermal shutdown and short-circuit protection
● Pin-compatible with MAX483
● Up to 250kbps data rates
● Slew-rate limited for low EMI
● 100nA Supply current in shutdown mode
● 120µA Low power consumption
