camerart Posted December 20, 2018 Report Share Posted December 20, 2018 Hi, My first question. I have a PCB with a PIC RX and two sources of input, that I need to switch between. I am trying a MAX4644 switch chip for this, but although it switches ok, the DATA seems to be occasionally crossing over to the wrong side. I've added 104 CAPs to the power supply track and switch track. The chip is now powered by 5V and switched by 3.3V signals, it was tried before all 3.3V Any ideas please? Camerart. Quote Link to comment Share on other sites More sharing options...
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