I'm designing a set of PCBS for a midi controller and am wondering what is the best placement for the multiplexers in my design. Here are the details:
Board 1: a microcontroller (Teensy 4.0), power in, usb out
Board 2: A control panel with around 50 pots and switches, all of which will be fed into 74HCT4051 multiplexer chips and then into the Teensy's analog inputs
The boards will be connected with an IDC cable, like this one.
So, is there any advantage placing the multiplexer chips on one board or the other (ie positioning the chips closer to the pots or closer to the microcontroller)? Or should I assume that either way should work fine?
To be clear, the pots and switches will be biased with the 3.3V coming from the microcontroller.