CD74HC4067E 16-Channel Analog Multiplexer/Demultiplexer (DIP‑24) 🔀

The CD74HC4067E is a high-speed, CMOS 16-channel analog multiplexer/demultiplexer in a DIP‑24 package. It routes one of sixteen inputs/outputs to a common pin under digital control, making it ideal for signal switching, sensor selection, and ADC expansion in Arduino, Raspberry Pi, and other microcontroller projects. Operating from a single 2 V to 6 V supply, it offers low power consumption and reliable performance across a wide temperature range.

Key Features ⚙️

• 🔀 16-channel MUX/DEMUX for analog or digital signals (X0–X15 to COM)
• ⚡ High-speed switching for responsive signal routing
• 🔋 Low power consumption with CMOS technology
• 🧠 CMOS logic control via 4 address lines (S0–S3) and active-low enable (EN)
• 📶 Signal range: 0 V to VCC (within supply rails)
• 🧩 Breadboard-friendly DIP‑24 package for rapid prototyping
• 🌡️ Wide temperature range for robust operation
• 🔧 Easy integration with Arduino, Raspberry Pi, and other electronics modules

Technical Specifications 📐

• Product Name: CD74HC4067E DIP‑24 Integrated Circuit
• Function: 16‑channel analog multiplexer/demultiplexer
• Package Type: DIP‑24 (PDIP)
• Supply Voltage (VCC): 2 V to 6 V
• Operating Temperature: −55°C to +125°C
• Number of Pins: 24
• Control Interface: Address lines S0–S3, EN (active low)
• Channels: 16 (X0–X15 to common COM), bidirectional
• Signal Range: 0 V to VCC
• Technology: High-speed CMOS

How It Works 🧭

Four address inputs (S0–S3) select one of the sixteen channels (X0–X15) to connect to the common terminal COM. The EN pin (active low) globally enables or disables the switch matrix. All analog paths are bidirectional, allowing the device to multiplex signals into an ADC or demultiplex a signal to multiple loads. Designed to minimize channel overlap during switching, it supports clean signal transitions within the specified voltage rails.

Typical Applications 🚀

• 📡 Telecommunication systems – channel selection and routing
• 💻 Computer and embedded systems – I/O expansion and test matrices
• 🏭 Industrial control – sensor multiplexing and data acquisition
• 🚗 Automotive systems – signal selection under controlled environments
• 📺 Consumer electronics – audio/video input switching within supply limits
• 🧪 Arduino/Raspberry Pi projects – ADC/DAC channel expansion, sensor hubs, and electronics components prototyping

Integration Tips 💡

• Place a 0.1 µF decoupling capacitor close to VCC and GND.
• Keep all analog signals within 0 V to VCC; avoid exceeding the supply rails.
• For precision ADC work, consider buffering sources/loads to account for on-resistance and sampling dynamics.
• Use clean CMOS-level control signals from your microcontroller or logic device.