74HC4051 / CD4051 8-Channel Analog Multiplexer Module Key benefits Multiplex up to eight analog signals using a single module, reducing wiring and ADC or input-pin requirements. Digital control pins let you select channels quickly and precisely, simplifying circuit logic and software control. Module form factor makes integration fast and reliable—mount directly on a PCB or into your prototype workflow. Flexible routing of analog signals improves system scalability and reduces the need for multiple ADCs or analog switches. What it does Acts as an electronic 8-channel switch (analog multiplexer) under digital control. Selects one of eight analog inputs and connects it to a common output under command from digital control signals. Available as a board module containing either the 74HC4051 or CD4051 IC, ready to install into circuits. Why you need it / problem solved Consolidates multiple analog inputs into a single measurement or processing path, saving MCU pins and ADC channels. Eliminates manual rewiring or mechanical relays when switching signals, improving reliability and speed. Provides precise, repeatable channel selection under program control, enabling automated data acquisition and signal routing. Important attributes Function: Single 8-channel analog multiplexer controlled by digital inputs (models 74HC4051 and CD4051). Compatibility: Interfaces with analog signal paths and digital control logic; suitable for systems that require digital selection of analog channels. Size and form: Supplied as a compact board module for straightforward circuit integration and prototyping. Material and build: PCB-mounted integrated multiplexer IC and supporting components for reliable electrical connections. Performance: Designed for clean analog switching and accurate channel selection through digital control; suitable for a variety of low- to mid-frequency analog signals. Typical applications Sensor multiplexing: Read multiple analog sensors with one ADC input on a microcontroller, minimizing required analog inputs and simplifying wiring. Audio and signal routing: Route one of several audio or test signals to a single amplifier, recorder, or measurement input without mechanical switches. Test and measurement setups: Automate selection between multiple test points or signal sources in lab, production, or field instruments. What stands out Two proven IC options (74HC4051 and CD4051) on a ready-to-use module. Simple digital control for deterministic, software-driven channel selection. Compact, module-based design for fast integration into existing circuits and prototypes. Compatibility note Designed to be controlled by standard digital control signals and to route analog signals; verify signal voltage ranges and supply conditions in your application against the IC datasheets for optimal performance.