CD4066-BE Quad Bilateral Analog/Digital Switch IC – Low On-State Resistance 4-Channel SPST Switch 

Description

The CD4066-BE from Texas Instruments is a high-performance quad bilateral switch designed for efficient analog or digital signal transmission and multiplexing. Featuring four independent switches, each with its own control, this device is a superior, pin-for-pin compatible upgrade to the classic CD4016B. It is specifically engineered to provide a significantly lower and more consistent on-state resistance across the entire signal-input range, ensuring high signal integrity.

By utilizing a sophisticated internal architecture—where the n-channel well is dynamically biased—the CD4066-BE eliminates variation in threshold voltage, allowing for peak input-signal swings equal to the full supply voltage. With extremely low off-state leakage, high control input impedance, and excellent linearity, it is an ideal component for advanced switching applications. Housed in a durable package, it offers reliable performance across 5V, 10V, and 15V logic domains, making it a cornerstone for professional-grade audio switching, industrial signal routing, and automated control systems.

Key Features

• Quad Bilateral Architecture: Four independent SPST switches with dedicated control inputs.
• Low On-State Resistance: Typically 125 Ω at 15V operation, providing excellent conductivity for signal paths.
• High Signal Linearity: Low distortion (<0.5%) makes it suitable for precision analog signal switching.
• Wide Voltage Range: Capable of 15V digital or ±7.5V peak-to-peak signal switching.
• Superior Isolation: Extremely low off-state leakage (10 pA typical) and high output-voltage ratio.
• High Frequency Response: Switch on-state frequency response up to 40 MHz (typical).
• High Control Impedance: Control circuitry is fully isolated from the signal path, preventing cross-interference.

Applications

• Signal Multiplexing: Efficiently routing multiple analog or digital signals to a single output.
• Audio/Video Switching: Ideal for high-linearity signal selection in professional audio equipment.
• Industrial Automation: Reliable switching for sensor networks and automated control loops.
• Analog Signal Routing: Versatile enough for communication systems, instrumentation, and test equipment.

Package Includes

• 1 x CD4066-BE 4-Channel Analog Switch IC (SPST)

Technical Specifications

Note: Product images are shown for illustrative purposes only and may differ from the actual product. For complete electrical characteristics, switching timing diagrams, and detailed application circuit integration, please refer to the official Texas Instruments CD4066B datasheet.