74HC4051 CD4051 8-Channel Analog Multiplexer for Arduino
74HC4051 CD4051 8-Channel Analog Multiplexer for Arduino
74HC4051 / CD4051 Single 8-Channel Digitally Controlled Analog Multiplexer
Expand your microcontroller's input/output capabilities with this compact and reliable 74HC4051 / CD4051 8-Channel Analog Multiplexer Switch Module. Designed for use with Arduino, Raspberry Pi, and other development platforms, this IC-based multiplexer allows a single microcontroller pin to control up to 8 analog or digital signal channels — perfect for sensor arrays, ADC expansion, signal routing, and more.
With a wide supply voltage range of -5V to +5V and an operating temperature range of -40°C to +85°C, this module handles demanding environments with ease. Whether you're building a data acquisition system, a multi-sensor project, or a custom electronics prototype, this multiplexer delivers clean, reliable switching performance.
Made in Mainland China.
Key Features
- 8-Channel Multiplexing: Route up to 8 analog or digital signals through a single common I/O pin
- Compatible ICs: Works with both 74HC4051 (high-speed CMOS) and CD4051 (standard CMOS) versions
- Wide Voltage Range: Supply voltage from -5V to +5V for flexible circuit integration
- Wide Temperature Range: Operates reliably from -40°C to +85°C
- Arduino & MCU Compatible: Ideal for Arduino, ESP32, STM32, Raspberry Pi, and similar platforms
- Digital Control: 3-bit binary address select lines (A, B, C) for easy channel selection
- Condition: Brand new
- No High-Concern Chemicals: Safe for use in a wide range of applications
Technical Specifications
| IC Type | 74HC4051 / CD4051 |
| Channels | 8 (single-pole, 8-throw) |
| Supply Voltage | -5V to +5V |
| Operating Temperature | -40°C to +85°C |
| Control Interface | 3-bit digital (A, B, C address lines) |
| Application | Arduino, microcontrollers, data acquisition, sensor arrays |
| Condition | New |
| Origin | Mainland China |
What You Can Build With It
- Multi-sensor data acquisition systems
- Arduino ADC pin expansion projects
- Automated signal routing and switching circuits
- Audio/analog signal selectors
- Multiplexed LED or button matrix control
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Frequently Asked Questions
Q: What is the difference between the 74HC4051 and the CD4051 multiplexer?
A: Both the 74HC4051 and CD4051 are single 8-channel analog multiplexers/demultiplexers, but they differ in technology. The 74HC4051 is a high-speed CMOS version offering faster switching speeds and lower power consumption, making it ideal for modern microcontroller-based projects. The CD4051 is a standard CMOS version that operates over a wider supply voltage range. Both are pin-compatible and suitable for Arduino and similar platforms.
Q: Is this multiplexer module compatible with Arduino?
A: Yes! The 74HC4051 / CD4051 multiplexer module is fully compatible with Arduino boards (Uno, Mega, Nano, etc.) as well as other popular microcontroller platforms like ESP32, STM32, and Raspberry Pi. You simply use 3 digital output pins on your Arduino to address and select any of the 8 channels via binary control signals.
Q: Can this module handle both analog and digital signals?
A: Yes, the 74HC4051 / CD4051 is a bidirectional analog switch, meaning it can handle both analog and digital signals. This makes it versatile for applications such as multi-sensor analog input expansion, digital signal routing, audio switching, and general-purpose channel selection in your electronics projects.