CD74HC4067 High Speed CMOS 16-Channel Analog/Digital Multiplexer Breakout Module

CD74HC4067 High-Speed CMOS 16-Channel Analog/Digital Multiplexer Breakout Module

The CD74HC4067 High-Speed CMOS 16-Channel Analog/Digital Multiplexer Breakout Module is a versatile breakout board based on the popular CD74HC4067 IC, which allows a single microcontroller pin to interface with up to 16 analog or digital signals. Internally, the module functions like a digitally controlled rotary switch, routing a common signal pin (SIG) to one of sixteen channel pins (C0–C15).

The multiplexer supports both analog and digital signals (within the VCC range) and works bidirectionally, meaning signals can flow in either direction. Channel selection is controlled using four digital address pins (S0–S3), enabling efficient expansion of inputs or outputs using minimal GPIO resources.

Thanks to its low ON resistance, low leakage current, and break-before-make switching, the CD74HC4067 is ideal for sensor multiplexing, signal routing, and communication line expansion. The onboard EN (Enable) pin allows all channels to be disconnected when driven HIGH, providing additional control and signal isolation.

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