CD4066 Pinout: Important Features & Equivalent

The CD4066 is a widely used analog switch IC that allows for the control and routing of analog signals in electronic circuits. Understanding CD4066 Pinout is essential for proper connection and utilization in circuit designs.

CD4066 Pinout

Let’s explore the CD4066 pinout in detail.

The CD4066 IC typically consists of a 14-pin package (e.g., DIP or SOIC) with four switches, each with their own control and signal pins. Here is the CD4066 Pinout:

Switch 1 (SW1):

• Pin 1 (A): Analog signal input/output for switch 1.
• Pin 2 (B): Analog signal input/output for switch 1.
• Pin 13 (C): Control pin for switch 1.

Switch 2 (SW2):

• Pin 5 (A): Analog signal input/output for switch 2.
• Pin 4 (B): Analog signal input/output for switch 2.
• Pin 12 (C): Control pin for switch 2.

Switch 3 (SW3):

• Pin 9 (A): Analog signal input/output for switch 3.
• Pin 10 (B): Analog signal input/output for switch 3.
• Pin 11 (C): Control pin for switch 3.

Switch 4 (SW4):

• Pin 8 (A): Analog signal input/output for switch 4.
• Pin 3 (B): Analog signal input/output for switch 4.
• Pin 14 (C): Control pin for switch 4.

The CD4066 pinout configuration allows for the independent control and routing of analog signals using the control pins (C) to selectively open or close the corresponding switches (A and B). The control pins are typically driven by digital signals (high or low) to control the switching action.

Features of CD4066

• Quad bilateral analog switches.
• Low “on” resistance.
• Wide operating voltage range.
• High-speed switching capability.
• Low power consumption.
• High noise immunity.
• Easy integration into various analog and digital circuits.

Specifications of CD4066

• Supply Voltage Range: 3V to 18V
• “On” Resistance: Typically a few hundred ohms
• Control Voltage (Logic High): VDD or VSS
• Control Voltage (Logic Low): 0V
• Operating Temperature Range: -55°C to +125°C

Equivalent ICs of CD4066

DG406: This is an equivalent IC to the CD4066, offering similar functionality and pinout configuration.

HEF4066: Another equivalent IC with comparable specifications and pinout configuration to the CD4066.

HCF4066: This IC is also functionally equivalent to the CD4066 and can be used as a drop-in replacement.

These equivalent ICs provide similar analog switching capabilities and can be used as alternatives to the CD4066 in various electronic circuits, depending on specific needs and component availability.

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