20 Mbps half-duplex RS-485 transceiver in an 8-MSOP package
The Analog Devices LTC2856IMS8-1#PBF is a half-duplex RS-422/RS-485 transceiver delivering 20 Mbps data rate over a single differential pair. The 25 mV receiver hysteresis provides noise immunity on long cable runs typical in industrial automation and building management networks.
Supply rail and bus voltage tolerance
The RS-485 bus pins are specified for the full common-mode range of -7V to +12V per the protocol, but the datasheet's absolute maximum ratings (not reproduced here) define the survival limits — assume the wiring is wrong and plan external protection if the cable leaves the cabinet.
