CD4051BM 8-Channel CMOS Analog Multiplexer & Demultiplexer IC

The CD4051BM is an 8-channel CMOS Analog Multiplexer and Demultiplexer IC designed to route one of eight analog or digital input/output signals through a single common terminal. It offers low ON resistance, high noise immunity, low power consumption, and operates over a wide voltage range, making it an excellent choice for Arduino, ESP32, STM32, Raspberry Pi, industrial automation, sensor switching, data acquisition, audio signal routing, robotics, and embedded system applications.

Whether you're an engineering student, electronics hobbyist, or professional developer in Bangladesh, the CD4051BM provides a reliable and cost-effective solution for expanding analog or digital input channels.

The CD4051BM is one of the most popular CMOS analog switch ICs used for selecting one of eight analog or digital signals using only three control pins. It functions as both a multiplexer (MUX) and demultiplexer (DEMUX), allowing designers to simplify circuits while reducing the number of required microcontroller pins.

Its low power consumption and wide operating voltage make it suitable for battery-powered devices as well as industrial electronic systems.

Students, engineers, robotics enthusiasts, and IoT developers frequently use the CD4051BM for sensor selection, analog signal routing, ADC expansion, audio switching, communication circuits, and embedded system development.

Features:

• 8-Channel Analog Multiplexer
• Analog Demultiplexer Function
• Wide Operating Voltage (3V–20V)
• Low ON Resistance
• Low Power CMOS Technology
• High Noise Immunity
• Supports Analog and Digital Signals
• TTL & CMOS Compatible
• High-Speed Signal Switching
• DIP/SOP Package Available
• Reliable Industrial Performance
• Easy Microcontroller Interface

Specifications:

Applications:

• Arduino Projects
• ESP32 Development
• STM32 Embedded Systems
• Raspberry Pi GPIO Expansion
• Sensor Selection
• Data Acquisition Systems
• Analog Signal Switching
• Audio Signal Routing
• Industrial Controllers
• Test Equipment
• Robotics
• IoT Projects
• Electronic Instrumentation
• Battery Monitoring
• Automation Systems

Why Choose CD4051BM?

The CD4051BM helps designers save valuable GPIO pins while allowing multiple analog or digital signals to be controlled efficiently. Its low power CMOS architecture makes it ideal for portable electronics and modern embedded systems.

Compared to mechanical switching methods, it provides:

• Faster switching
• Longer lifespan
• Smaller PCB footprint
• Better reliability
• Lower power consumption

Benefits:

• Reduces wiring complexity
• Saves microcontroller pins
• Cost-effective solution
• Reliable analog switching
• Supports bidirectional signals
• Easy to integrate
• Excellent for educational projects
• Industrial-grade performance

Package Includes:

• 1 × CD4051BM 8-Channel CMOS Analog Multiplexer IC