The HW-178 74HC4067 module routes one of 16 analogue or digital channels through a shared SIG connection. Four binary select inputs choose the active channel, making it a practical way to expand Arduino, ESP32 and Raspberry Pi projects without using 16 separate signal pins.
Specifications
Datasheets
What's in the box
One assembled blue PCB with unsoldered through-holes. Pin headers are not included.
Great for
Wiring & getting started
- Connect power
Connect VCC to a 2V to 6V supply and connect GND to the controller ground.
- Connect signals
Connect the shared signal to SIG, then connect each source or destination to C0 through C15.
- Select a channel
Drive S0 to S3 with the channel's binary value. S0 is the least-significant bit, so 0000 selects C0 and 1111 selects C15.
- Set enable
Hold EN low to enable the selected channel. Drive EN high to disconnect every channel.
Note: This module is a signal switch, not a voltage level shifter. Keep every switched signal between GND and the module VCC.
