on November 15th 101

Understanding the CD4066B Bilateral Switch

The CD4066B quad bilateral switch is a powerful component, designed to seamlessly handle both analog and digital signals. With its advanced engineering, this device ensures stable, low on-state resistance across a broad input range, making it ideal for applications where signal integrity is a must. Compared to its predecessor, the CD4016B, the CD4066B offers improved signal fidelity and reduced losses, proving valuable for tasks like audio and video processing where clarity and precision are paramount. This versatile switch is an excellent choice for you looking to enhance circuit efficiency, optimize signal paths, and achieve robust performance across diverse conditions.

Catalog

CD4066B Overview

The CD4066B stands out as a remarkable component within the domain of electronic switches, specifically appreciated for its design as a quad bilateral switch. Its ability to proficiently handle both analog and digital signals endows it with a noteworthy versatility, making it suitable for a diverse array of applications such as signal transmission and multiplexing.

When placed alongside the CD4016B, the superiority of the CD4066B becomes evident, primarily due to its lower on-state resistance that remains stable across a variety of signal inputs. This feature is ultimate as it plays a major role in maintaining signal integrity over prolonged periods, while simultaneously minimizing potential distortions that could detract from overall system efficacy.

At the core of the CD4066B's functionality are four independent switches, each uniquely controlled by individual signals. This design empowers dynamic and flexible signal routing, thereby enhancing operational efficiency. It also allows for the simultaneous management of multiple signal paths, effectively eliminating any chance of interference. Notably, the incorporation of n-channel devices in each switch fosters a strong connection, either to the input or to VSS (ground). This setup is mostly effective in stabilizing the switch's threshold voltage, which helps maintain consistent resistance during its operations.

Features

Feature	Description
15-V Digital or ±7.5-V Peak-to-Peak Switching	Operates with a wide switching voltage range.
125-Ω Typical On-State Resistance for 15-V Operation	Low on-state resistance for efficient switching at 15-V.
Switch On-State Resistance Matched to Within 5 Ω Over 15-V Signal-Input Range	Ensures consistent performance across the signal range.
On-State Resistance Flat Over Full Peak-to-Peak Signal Range	Maintains uniform resistance regardless of signal variations.
High On or Off Output-Voltage Ratio	80 dB typical at fis = 10 kHz, RL = 1 kΩ, for superior signal isolation.
High Degree of Linearity	<0.5% distortion typical at fis = 1 kHz, Vis = 5-Vp-p, VDD – VSS ≥ 10-V, RL = 10 kΩ.
Extremely Low Off-State Switch Leakage	Very low offset current and high effective off-state resistance: 10 pA typical at VDD – VSS = 10-V, TA = 25°C.
Extremely High Control Input Impedance	10¹² Ω typical; isolates control circuit from the signal circuit.
Low Crosstalk Between Switches	–50 dB typical at fis = 8 MHz, RL = 1 kΩ, for minimal interference.
Matched Control-Input to Signal-Output Capacitance	Reduces output signal transients for better stability.
Frequency Response, Switch On	40 MHz typical, enabling high-speed switching.
100% Tested for Quiescent Current at 20-V	Ensures quality and reliability for low power consumption.
5-V, 10-V, and 15-V Parametric Ratings	Compatible with multiple voltage levels for versatile applications.

Pin Configuration

NO.	NAME	I/O	DESCRIPTION
1	SIG A IN/OUT	I/O	Input/Output for Switch A
2	SIG A OUT/IN	I/O	Output/Input for Switch A
3	SIG B OUT/IN	I/O	Output/Input for Switch B
4	SIG B IN/OUT	I/O	Input/Output for Switch B
5	CONTROL B	I	Control pin for Switch B
6	CONTROL C	I	Control pin for Switch C
7	VSS	—	Low Voltage Power Pin
8	SIG C IN/OUT	I/O	Input/Output for Switch C
9	SIG C OUT/IN	I/O	Output/Input for Switch C
10	SIG D OUT/IN	I/O	Output/Input for Switch D
11	SIG D IN/OUT	I/O	Input/Output for Switch D
12	CONTROL D	I	Control Pin for D
13	CONTROL A	I	Control Pin for A
14	VDD	—	Power Pin

Technical Specifications

Here is the technical specifications table for Texas Instruments CD4066BE.

Type	Parameter
Lifecycle Status	ACTIVE (Last Updated: 1 day ago)
Factory Lead Time	6 Weeks
Contact Plating	Gold
Mount	Through Hole
Mounting Type	Through Hole
Package / Case	14-DIP (0.300, 7.62mm)
Number of Pins	14
Weight	927.99329mg
Turn Off Delay Time	30 ns
Operating Temperature	-55°C ~ 125°C
Packaging	Tube
Series	4000B
JESD-609 Code	e3
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	14
ECCN Code	EAR99
Type	Bilateral, FET Switches
Resistance	240Ohm
Terminal Finish	Matte Tin (Sn)
Voltage - Supply	3V ~ 18V
Number of Functions	4
Supply Voltage	5V
Frequency	40MHz
Base Part Number	CD4066
Pin Count	14
Number of Outputs	2
Circuit	1 x 1:1
Polarity	Non-Inverting
Power Supplies	5/15V
Number of Channels	4
Max Supply Current	5μA
Throw Configuration	SPST
Quiescent Current	20nA
Turn On Delay Time	30 ns
Number of Inputs	3
Supply Type	Dual, Single
Bandwidth	40MHz
Neg Supply Voltage-Nom (Vsup)	-5V
Max Dual Supply Voltage	9V
Min Dual Supply Voltage	1.5V
Dual Supply Voltage	7.5V
Input Capacitance	8pF
Voltage Supply Source	Dual Supply
On-state Resistance Match-Nom	15Ohm
Switching	BREAK-BEFORE-MAKE
Switch-on Time-Max	70ns
Switch-off Time-Max	70ns
Drain to Source Resistance	470Ohm
Normal Position	NO
Ambient Temperature Range High	125°C
Height	5.08mm
Length	19.3mm
Width	6.35mm
Thickness	3.9mm
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

CD4066B Use Cases

The CD4066B showcases its versatility across a diverse array of applications, mostly in the areas of analog switching and multiplexing. Its unique ability to gate and modulate signals bolsters its significance within various electronic frameworks. A prime illustration of the CD4066B’s utility emerges in situations that demand agile control over analog signals. For example, in audio processing systems, this component adeptly manages audio signal routing, selectively activating or deactivating channels to elevate functionality and enrich your experience.

Analog Signal Switching

In the domain of analog signal switching, the CD4066B fulfills various roles, including that of a variable resistor and a conventional switch. This versatility allows for meticulous adjustments to both signal amplitude and phase, an attribute that proves advantageous in scenarios where exacting control over signal qualities is active. In audio mixing consoles, engineers routinely manipulate multiple signals. The CD4066B empowers them to define specific pathways for distinct signals, ultimately achieving a more polished audio output.

Digital Signal Switching

The functionality of the CD4066B in facilitating digital signal switching and multiplexing greatly extends its range of applications. Digital circuits, play a major part in managing data flow effectively, ensuring that digital signals traverse without distortion. When integrated into microcontroller-based projects, where various sensors vie for access to a single communication line, the CD4066B proficiently coordinates multiple sensor inputs, toggling between them as circumstances dictate. Its adaptability to interface effortlessly with various communication protocols enhances its effectiveness. For instance, in systems utilizing I2C or SPI protocols, the CD4066B can skillfully switch between different peripheral devices. This capability conserves board space and amplifies overall design efficiency.

Automation and Control Systems

The significance of the CD4066B in automation within various control systems warrants attention. Its use enables digital governance over serious parameters such as frequency, impedance, phase, and gain. In smart home environments, the device can regulate lighting modulation, adjusting light intensities based on factors like time of day or occupancy. This responsiveness not only promotes energy savings but also enhances overall comfort. Moreover, the ability to tailor these controls according to specific environmental cues showcases the essence of your design in modern systems. The evolution from manual operations to automated solutions marks a defining trend in contemporary electronic design, inspiring you to innovate thoughtfully and incorporate components like the CD4066B to achieve both functional and aesthetic aspirations.

Datasheet PDF

CD4066BE Datasheets:

Logic Guide.pdf

CD4066B Datasheet.pdf