Analog 8-channel multiplexer 74HC4051

I've bought this analog 8-channel multiplexer, but I don't know how to use it...

It has 2 VEE and 2 VCC pins which is not common in other modules...

Does anybody used it before?

Hi,
This will help’

https://playground.arduino.cc/Learning/4051

Vee is another gnd, that usually is conneced to the gnd pin of the IC.
In some applications this Vee pin needs to be at a different potential to gnd.

In your case connect Vee to the gnd pin.

Try google arduino 4051

Tom… :slight_smile:

4051 is an analog multiplexer. It can pass analog voltage of +ve and -ve polarities (-5V to +5V). If you intend to handle such kind of bi-polar analog voltage with the 4051, you need to connect the VEE-point to -5V supply; else, connect the VEE-point to GND potential.