MAX14945EWE+

Interface & Isolation ADI SLP

MAX14945 RS-485/RS-422 Transceiver

Analog Devices MAX14945 RS-485/RS-422 Transceiver provides 2750V_RMS (60s) of galvanic isolation between the cable side (RS-485/RS-422 driver/receiver side) and the UART side of the device. Isolation improves communication by breaking ground loops. The Analog Devices MAX14945 also reduces noise when large ground potential differences exist between ports. Signals are passed across the isolation barrier through integrated high-voltage capacitors. This device allows for robust communication at any speed up to 500kbps. The device includes one half-duplex drive/receive channel. The receiver is a 1/8-unit load, allowing up to 256 transceivers on a common bus.  Integrated true fail-safe circuitry ensures a logic high on the receiver output when inputs are shorted or open. Undervoltage lockout disables the driver when the cable or UART side power supplies are below functional levels.