The ADM3491ARZ is a low power Differential Line Transceiver, designed to operate using a single 3.3V power supply. Low power consumption, coupled with a shutdown mode, makes it ideal for power-sensitive applications. It is suitable for communication on multipoint bus transmission lines. It is intended for balanced data transmission and complies with both Electronic Industries Association (EIA) Standards RS-485 and RS-422. It contains a differential line driver and a differential line receiver, making it suitable for full-duplex data transfer. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. This feature forces the driver output into a high impedance state if a significant temperature increase is detected in the internal driver circuitry during fault conditions.
19kR Input impedance
Up to 50 transceivers on bus
20Mbps Data rate
Short-circuit protection
Specified over full temperature range
Thermal shutdown
Interoperable with 5V logic
840µA Supply current
2nA Shutdown current
Product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD.
