4066 (Quad Analog Bilateral Switch)

Overview

The 4066 (CD4066BE) is a quad analog bilateral switch IC from the 40-series CMOS family. It contains four independent, bidirectional switches that can pass both analog and digital signals with minimal distortion. When a control voltage is applied, the switch turns on, providing a low-resistance path; when the control is removed, the switch turns off, presenting a high-impedance state. This makes the 4066 ideal for signal routing, audio switching, and multiplexing applications.

Key Features

• Four independent switches in a single 14-pin DIP package
• Bidirectional operation – signals can pass in either direction
• Low ON resistance – typically around 80Ω at 5V supply
• High OFF resistance – leakage current in the nanoamp range
• Wide supply voltage range – 3V to 15V
• CMOS technology – low power consumption
• Break-before-make switching – prevents momentary shorting of signals
• ESD protection – built-in protection on all inputs

Technical Specifications

• Supply Voltage (VDD): 3V to 15V
• ON Resistance (RON): 80Ω typ. at VDD=5V, 40Ω typ. at VDD=10V
• OFF Leakage Current: ±0.5nA typ. at 25°C
• Control Voltage High Level (VIH): 0.7 × VDD min.
• Control Voltage Low Level (VIL): 0.3 × VDD max.
• Switching Time: 10ns typ. at VDD=10V
• Operating Temperature: -55°C to +125°C
• Package: 14-pin DIP (also available in SOIC)

Applications & Use Cases

• Analog signal switching – routing audio, video, or sensor signals
• Digital multiplexing – selecting between multiple digital lines
• Sample-and-hold circuits – controlling signal capture
• Modulator/demodulator – for communication projects
• Programmable gain amplifiers – switching feedback resistors
• Automation and control systems – signal routing in industrial applications
• DIY electronics projects – for makers, students, and hobbyists

What's Included

• 1x 4066 Quad Analog Bilateral Switch IC (14-pin DIP)

Compatibility

• Works with Arduino, Raspberry Pi, ESP32, and other microcontrollers
• Can be used with 5V and 3.3V logic (ensure control voltage thresholds are met)
• Compatible with breadboards and perfboards – standard 0.1" pin spacing
• Pin-compatible with CD4066BE, HEF4066, and MC14066 equivalents

MOKWN Recommendation

The 4066 is a versatile and reliable choice for any project requiring clean analog or digital signal switching. Its low ON resistance and high OFF isolation make it suitable for audio and precision sensor applications. Whether you're a student learning electronics or an engineer prototyping, the 4066 is a must-have in your component kit. Order now from MOKWN and get it delivered fast across Egypt!