SP3497E(2010) Datasheet PDF - Exar Corporation

ADVANTAGES OF ENHANCED RECEIVER FAILSAFE FEATURES IN RS-485/RS-422 SERIAL TRANSCEIVERS

INTRODUCTION
RS-485/RS-422 receiver failsafe keeps the data bus in a known state when there are no active drivers on the bus. The Exar RS-485/RS-422 transceivers offer two different types of receiver failsafe: standard and enhanced. This application note will discuss how the enhanced receiver failsafe feature can help customers with failsafe problems while terminated.