CD74HC4067 16-channel analog/digital multiplexer/demultiplexer breakout board - This breakout board provides the CD74HC4067 16-channel analog/digital multiplexer/demultiplexer. It uses a common pin (COM in the schematic, SIG on the board) that is internally routed to one of 16 channel pins (CHAN0 to CHAN15) like a rotary switch. - Bidirectional operation: signals can flow either from the common pin to a channel or from a channel to the common pin. - Signal compatibility: supports both analog and digital signals. The voltage on any channel must not exceed VCC. - Control and labeling: analog output is labeled DIG; channel control is via S0, S1, S2, S3. - Compact breakout design: designed to simplify wiring and integration into projects, prototypes, and development boards. - Simple, scalable signal routing: use a microcontroller or ADC to read or drive multiple signals through a single connection by selecting the desired channel with the S0-S3 lines. Use scenarios - Sensor data acquisition with a single ADC input: connect 16 analog sensors to CHAN0–CHAN15 and use S0–S3 to select the sensor to be read by the ADC through the DIG common pin. - Digital signal routing for testing: route any one of 16 digital signals to a microcontroller input by selecting the corresponding CHAN pin, enabling quick testing without rewiring. - Prototyping and circuit debugging: rapidly switch signals from multiple sources to a single measurement or processing point to streamline development and troubleshooting.