CD74HC4067 16-channel analog multiplexer breakout boards, pack of 2. - Key function: 16-channel analog multiplexer/demultiplexer that lets you select one of 16 inputs to connect to a single output, controlled by four select lines. Ideal for routing multiple analog signals to one ADC or processing channel. - Why you need it: reduces pin count and wiring when working with many sensors or signals. Enables time-saving signal selection in data acquisition, testing, and prototyping workflows. - What makes it stand out: ready-to-use breakout with clearly labeled pins, compact FR-4 PCB, and standard 0.1 inch header spacing for easy integration with common development boards. - Compatibility and usage: designed for standard digital/analog signal paths in microcontroller and data acquisition projects. Works with typical logic levels used in hobbyist and professional setups. Compatible with multiple boards and prototyping rigs. - Size and materials: compact breakout boards, durable FR-4 substrate, clearly marked Vcc, GND, IN/OUT, and S0–S3 select pins for straightforward wiring and monitoring. - Performance highlights: low on resistance within datasheet limits and fast switching for reliable signal routing between inputs and the common output. - In the box: 2 identical breakout boards, enabling two separate multiplexing channels or concurrent projects without extra ordering. - Use scenarios: 1) Sensor array multiplexing: connect up to 16 sensors to a single ADC input on a microcontroller, switch with S0–S3. 2) Signal routing in a test bench: rapidly switch between measurement signals from multiple sources to a single instrument. 3) Prototyping a multiplexed data acquisition system: evaluate many analog signals with minimal wiring and simplified circuitry. - Ready-to-use solution for signal selection: plug in, wire up, and control with your existing microcontroller or test setup.