Description
The CJMCU-4051 is an 8-channel analog multiplexer/demultiplexer module based on the 74HC4051 IC, ideal for expanding input/output capabilities in your electronics projects.
This breakout board allows easy integration of a single-pole octal-throw (SP8T) analog switch for both analog and digital signal routing.
With three digital select inputs (S0, S1, S2), eight independent inputs/outputs (Yn), a common I/O pin (Z), and an enable pin (E), this module enables flexible switching of signals in your circuits.
It supports voltage ranges from -5V to +5V, with low ON resistance ensuring minimal signal loss.
- Type: 8-Channel Analog Multiplexer / Demultiplexer Breakout Board
- IC Model: 74HC4051 (SP8T Analog Switch)
- Input Voltage Range: -5V to +5V
- ON Resistance: 60Ω to 80Ω typical (depending on supply voltage)
- Select Inputs: 3 Digital Control Pins (S0, S1, S2)
- Enable Pin: Digital Enable (E) – disables switching when HIGH
- Logic Compatibility: Supports 5V logic level control for ±5V analog signals
- Protection: Clamp diodes included for input protection
- Built-in Feature: ‘Break before make’ switching to avoid signal overlap
What’s Included:
- 1x CJMCU-4051 74HC4051 8 Channel Multiplexer Module Breakout Board
Great For:
- Multiplexing analog or digital signals in embedded projects
- Expanding microcontroller inputs/outputs
- Audio signal switching and routing
- Sensor array selection
- Robotics and automation applications
- STEM learning and electronics prototyping
Usage Tips:
- Connect control pins (S0, S1, S2) to your microcontroller to select the desired input/output channel
- Use the enable pin (E) to disable switching when needed
- Suitable for both analog and digital signals within ±5V range
- Ideal for reducing the number of microcontroller pins required for multiple sensor or signal inputs
