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TXB0106 输出波形不正常出现失真

Other Parts Discussed in Thread: TXB0106

dear All,

 

在使用TXB0106的时候出现波形失真的问题,VCCB这一端(5V电平)未加上拉电阻, VCCA这一端W5500模组(3.3V电平)有接上拉电阻,如下图所示

目前的状况是如果不接W5500模组,输入输出波形都正常,但是接上W5500模组以后,波形失真.(有将W5500的模组取下后现象依旧)