Hello,
The picture below shows the truth table of CD74HC4067.
The selected channel is none when E=1, is this means the output is open circuit?
We need additional MUX on the board, can I tie the outputs of two MUXs together and use EN to select them?
Thanks very much, Keith
Keith,
When /E = 1 or logic high, the signal switch creates a high impedance path between the drain and source. These are solid state FET switches so there isn't a true open circuit like a mechanical switch.
You can see the Hi-Z spec when E = Vcc in the datasheet.
Yes, you may connect the I/O pins of the switch and toggle between them with the enable since the "off" switch will be Hi-Z.
What are you connecting that you need a 32:1 switch?
Thank you,
Adam
