EXAR Corporation, 48720 Kato Road, Fremont, CA 94538

• (510) 668-7000 • FAX (510) 668-7017

Visit Exar Web Site at www.exar.com

DATA COMMUNICATIONS APPLICATION NOTE

DAN-101

NOTICE

EXAR Corporation reserves the right to make changes to the products contained in this publication in order to

im-prove design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any

circuitsde-scribedherein,conveysnolicenseunderanypatentorotherright,andmakesnorepresentationthat

thecircuitsarefreeofpatentinfringement.Chartsandschedulescontainedhereinareonlyforillustration

purposesandmayvarydependinguponauser’sspecificapplication.Whiletheinformationinthispublicatiohas

beencarefullychecked;noresponsibility,however,isassumedforinaccuracies.

EXARCorporationdoesnotrecommendtheuseofanyofitsproductsinlifesupportapplicationswherethefailure

or malfunction of the product can reasonably be expected to cause failure of the life support system or to

significantlyaffectitssafetyoreffectiveness.Productsarenotauthorizedforuseinsuchapplicationsunless

EXARCorporationreceives,inwriting,assurancestoitssatisfactionthat:(a)theriskofinjuryordamagehas

beenminimized;(b)theuserassumesallsuchrisks;(c)potentialliabilityofEXARCorporationisadequately

protectedunderthecircum-stances.

Copyright 1999 EXAR Corporation.

Reproduction,inpartorwhole,withoutthepriorwrittenconsentofEXARCorporationisprohibited.