16 Channel Multiplexer Analog Module - 74HC4067

Multiplexer 74HC4067 - 16 Channel Analog Module

This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067. This chip is like a rotary switch - it internally routes the common pin. It works with both digital and analog signals (the voltage can’t be higher than VCC), and the connections function in either direction. To control it, connect 4 digital outputs to the chip’s address select pins (S0-S3), and send it the binary address of the channel you want (see the datasheet for details). This allows you to connect up to 16 sensors to your system using only 5 pins!

Specifications

• Chipset: CD74HC4067
• Channels: 16
• Address Lines: 4
• Supply: 2V to 6V
• On resistance: 70 Ohms @ 4.5V
• 6ns break-before-make @ 4.5V
• Temperature range: -55C to 125C

Example of Reading Multiple Analog Sensors

Address Table