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CD74HC4067 issue



I can Mux perfectly passing a high or low (Vcc and GND) through the four select pins S(0-3) to the I(0-15).

Now I need to pass a high value (VCC) from I(0-15) to select pins (S0-3)

"They are bidirectional switches thus allowing any analog input to be used as an output and vice-versa."

I can not pass those 16 values to four.

Maybe I am misunderstanding the demux part of this chip?

Perhaps I need a different kind of component for the second part of my operation?

Any input or suggestions would help thanks.