CD74HC4067 is a 16-channel analog/digital multiplexer/demultiplexer chip. It allows a microcontroller to connect one input/output pin to one of 16 channels, essentially expanding the number of analog or digital I/O pins.
Channels:16 (C0 to C15)
Signal I/O:Analog or Digital
Select Lines:4 (S0, S1, S2, S3)
Control Pin:EN (active LOW to enable)
Voltage Range:2V–6V (typically used at 5V or 3.3V)
Chip Package:DIP/SOIC (commonly available on breakout boards)
On-Resistance:~70 ohms