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HMC834 communication

Question asked by FreedomSabre on Jul 1, 2016
Latest reply on Jul 5, 2016 by dyoung1

i make a HMC834 PCB,the i use HMC834 demoboard's Control panel to communicate with my pcb,between the Control panel and HMC834 i put a 74AVC4TD245BQ,then i found the communication is not well ,somtimes the communication is good ,sometimes is not. so i communicate without 74AVC4TD245BQ,then it works well. what's the problem with 74AVC4TD245BQ,why using 74AVC4TD245BQ  make the communication unstable. the 74AVC4TD245BQ works well itself.