Low power CMOS RS485 transceiver
Robert Reay
Abstract
The LTC485, the first CMOS RS485 transceiver featuring ultralow power consumption without sacrificing ESD and latchup immunity, is described.
Keywords
CMOS RS485 transceiver
LTC485
Introduction
The EIA RS485 data transmission standard has become popular because it allows for balanced data transmission in a party line configuration. Users are able to configure inexpensive local area networks and multi-drop communication links using twisted pair wire and the protocol of their choice.
Previous RS485 transceivers have been designed using bipolar technology because the common mode range of the device must extend beyond the supplies and be immune to ESD damage and latchup. ...
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