Chapter 389

RS485 transceivers operate at 52Mbps over 100 feet of unshielded twisted pair

Victor Fleury

Abstract

The LTC1685 family of high speed RS485 transceivers that allow for up to 52Mbps transmission over reasonable distances (100 feet), as well as moderate speed over long distances (1.6Mbps, 2000 feet), is described.

Keywords

RS485 transceiver

LTC1685

LTC1686

LTC1687

The propagation delay of typical RS485 transceivers can vary by as much as 500% over process and temperature. In applications where high speed clock and data waveforms are sent over long distances, propagation delay and skew uncertainties can pose system design constraints and limit the maximum data rate. The LTC1685 high speed RS485 transceiver family addresses ...

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