Ximimark 5Pcs 16CH Analog Digital Multiplexer Breakout Board Module CD74HC4067 CMOS Precise Module For Arduino

These CD74HC4067 multiplexer breakout boards are excellent for projects where you need to expand I/O without adding extra microcontrollers. Each board gives you 16 channels that can be used for either analog or digital signals, and they’re easy to address with just 4 control pins. The breakout design makes wiring straightforward—perfect for breadboards or jumper setups. I’ve used them with Arduino and ESP32 boards, and they’ve worked flawlessly for reading multiple sensors and inputs. The signal quality is clean and precise, and switching between channels is fast and reliable. The fact that you get 5 boards in one pack is a great value. It allows scaling up to big projects like keypads, control panels, or large arrays of sensors. Build quality is solid—the pins are well-aligned, solder pads are clean, and the boards feel sturdy. If you’re working on projects where pin count is a limitation, these multiplexers are a must-have. Highly recommended for hobbyists, students, and makers looking to simplify large input/output projects

Multiplexers are awesome. What can I say.

These are great used a couple to make midi controllers. Mine all showed up on time packed ok and they all worked so that's great. Will get more when I need more.

They work alright, they just have the truth table mixed up from manufacturers, this worked for me TruthTable = [ #s0,s1,s2,s3 channel [0, 0, 0, 0], #0 [1, 0, 0, 0], #1 [0, 1, 0, 0], #2 [1, 1, 0, 0], #3 [0, 0, 0, 1], #4 MANUFACTURER 8 [1, 0, 0, 1], #5 MANUFACTURER 9 [0, 1, 0, 1], #6 MANUFACTURER 10 [1, 1, 0, 1], #7 MANUFACTURER 7 [0, 0, 1, 0], #8 MANUFACTURER 4 [1, 0, 1, 0], #9 MANUFACTURER 5 [0, 1, 1, 0], #10 MANUFACTURER 6 [1, 1, 1, 0], #11 MANUFACTURER 7 [0, 0, 1, 1], #12 [1, 0, 1, 1], #13 [0, 1, 1, 1], #14 [1, 1, 1, 1]] #15

Got these for an audio device I was building, then they sat around for a couple months before I ran out of digital pins on my ESP32 board and remembered these boards can do digital as well as analog. 4 pins from the board gives you 16 - of course, you can't use more than one at a time, but there's plenty of applications I've found for it. They're just good to have around.

Yea - I should have thoroughly tested all boards. I did test one and it worked great. Then I spent all day wiring a stacked and bussed assembly that is pretty much impossible to disassemble to repair. When done I find the middle board (of course) is completely dead. The others work fine. So 1 of 5 boards was defective. I could probe signal lines and all connect to the chip correctly. The chip is just dead. Now I need to start over with a product from a different vendor.

I verified counting through binary numbers 0-15 selects outputs C0 through C15 in order. One reviewer claimed some pins were swapped, but that was not the case for the ones I got. Measured resistance was about 55 ohms for all paths, so it's well within spec.

One of these boards worked just fine, the other one was dead on arrival. I am not sure what happened.

Simple pcb, items received had red board but works the same.