How to Use cd4052: Examples, Pinouts, and Specs

Introduction

The CD4052 is a dual 4-channel analog multiplexer/demultiplexer. It enables the selection of one of several input signals to be routed to a single output or vice versa. This component is widely used in signal routing, switching, and multiplexing applications. Its ability to handle both analog and digital signals makes it versatile for use in audio systems, data acquisition, and communication systems.

Explore Projects Built with cd4052

Arduino UNO with MPU-6050 Sensor Array and Multiplexer Control Circuit

This circuit is designed to interface multiple MPU-6050 sensors with an Arduino UNO for motion tracking purposes. The HCF4052BE analog multiplexer/demultiplexer is used to switch between the MPU-6050 sensors' SCL and SDA lines, allowing for multiple sensors to share the same I2C bus. The Arduino runs embedded code to read capacitive touch inputs, accelerometer and gyroscope data from the MPU-6050 sensors, and transmit this information via Bluetooth and Wi-Fi using software serial communication.

Open Project in Cirkit Designer

ESP32-Powered Wi-Fi Controlled Robotic Car with OLED Display and Ultrasonic Sensor

This circuit is a battery-powered system featuring an ESP32 microcontroller that controls an OLED display, a motor driver for two hobby motors, an ultrasonic sensor for distance measurement, and a DFPlayer Mini for audio output through a loudspeaker. The TP4056 module manages battery charging, and a step-up boost converter provides a stable 5V supply to the components.

Open Project in Cirkit Designer

ESP32-Based Water Flow Monitoring System with OLED Display

This circuit features an ESP32 microcontroller interfaced with a water flow sensor to measure flow rates and an OLED display for visual output. A 4060 binary counter IC is configured for timing or frequency division, with its outputs connected to the ESP32. A SN74AHCT125N buffer is used for level shifting or driving capabilities.

Open Project in Cirkit Designer

Arduino Nano 33 BLE Battery-Powered Display Interface

This circuit features a Nano 33 BLE microcontroller interfaced with a TM1637 4-digit 7-segment display for information output, powered by a 3.7V battery managed by a TP4056 charging module. The microcontroller communicates with the display to present data, while the TP4056 ensures the battery is charged safely and provides power to the system.

Open Project in Cirkit Designer

Common Applications:

Signal routing in audio systems
Data acquisition systems
Communication systems
Analog-to-digital and digital-to-analog conversion
Sensor signal multiplexing

Technical Specifications

The CD4052 is a CMOS-based device with the following key specifications:

Parameter	Value
Supply Voltage (VDD)	3V to 18V
Analog Signal Range	0V to VDD
On-Resistance (RON)	125Ω (typical at VDD = 10V)
Maximum Input Current	±10mA
Propagation Delay	50ns (typical at VDD = 10V)
Operating Temperature Range	-55°C to +125°C
Package Types	DIP-16, SOIC-16, TSSOP-16

Pin Configuration and Descriptions

The CD4052 has 16 pins, as described in the table below:

Pin Number	Pin Name	Description
1	A	Address select input A
2	EN	Enable input (active LOW)
3	X0	Channel 0 of X multiplexer
4	X1	Channel 1 of X multiplexer
5	X2	Channel 2 of X multiplexer
6	X3	Channel 3 of X multiplexer
7	XOUT	Common output/input for X multiplexer
8	VSS	Ground (0V)
9	YOUT	Common output/input for Y multiplexer
10	Y3	Channel 3 of Y multiplexer
11	Y2	Channel 2 of Y multiplexer
12	Y1	Channel 1 of Y multiplexer
13	Y0	Channel 0 of Y multiplexer
14	B	Address select input B
15	VDD	Positive supply voltage
16	INHIBIT	Inhibit input (active HIGH, disables all channels when HIGH)

Usage Instructions

How to Use the CD4052 in a Circuit

Power Supply: Connect the VDD pin to a positive voltage source (3V to 18V) and the VSS pin to ground.
Enable Input: Ensure the EN pin is LOW to enable the device. If EN is HIGH, all channels will be disabled.
Address Selection: Use the A and B pins to select the desired channel:
- A and B are binary inputs that determine which channel (0-3) is active.
- For example, A=0 and B=0 will select channel 0, while A=1 and B=1 will select channel 3.
Signal Connections:
- For the X multiplexer, connect the input signals to X0-X3 and the output to XOUT.
- For the Y multiplexer, connect the input signals to Y0-Y3 and the output to YOUT.
Inhibit Input: If the INHIBIT pin is HIGH, all channels will be disabled regardless of the address inputs.

Important Considerations:

Ensure the analog signal range does not exceed the supply voltage (0V to VDD).
Minimize the load on the output pins to reduce signal distortion.
Use decoupling capacitors (e.g., 0.1µF) near the VDD pin to stabilize the power supply.

Example: Connecting the CD4052 to an Arduino UNO

The CD4052 can be controlled using an Arduino UNO to select channels programmatically. Below is an example code snippet:

// Define pin connections for CD4052
const int pinA = 2;  // Address pin A
const int pinB = 3;  // Address pin B
const int enablePin = 4;  // Enable pin (active LOW)

void setup() {
  // Set pin modes
  pinMode(pinA, OUTPUT);
  pinMode(pinB, OUTPUT);
  pinMode(enablePin, OUTPUT);

  // Enable the CD4052
  digitalWrite(enablePin, LOW);  // Set enable pin LOW to activate the device
}

void loop() {
  // Select channel 0 (A=0, B=0)
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  delay(1000);  // Wait for 1 second

  // Select channel 1 (A=1, B=0)
  digitalWrite(pinA, HIGH);
  digitalWrite(pinB, LOW);
  delay(1000);  // Wait for 1 second

  // Select channel 2 (A=0, B=1)
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, HIGH);
  delay(1000);  // Wait for 1 second

  // Select channel 3 (A=1, B=1)
  digitalWrite(pinA, HIGH);
  digitalWrite(pinB, HIGH);
  delay(1000);  // Wait for 1 second
}

Troubleshooting and FAQs

Common Issues and Solutions

No Signal Output:
- Ensure the EN pin is set to LOW to enable the device.
- Verify that the INHIBIT pin is LOW; if HIGH, all channels will be disabled.
- Check the power supply connections (VDD and VSS).
Signal Distortion:
- Ensure the input signal voltage is within the range of 0V to VDD.
- Reduce the load on the output pins to minimize distortion.
Incorrect Channel Selection:
- Verify the logic levels on the A and B address pins.
- Check for loose or incorrect wiring to the address pins.

FAQs

Q1: Can the CD4052 handle digital signals?
Yes, the CD4052 can handle both analog and digital signals, provided the signal levels are within the supply voltage range.

Q2: What happens if the INHIBIT pin is left floating?
The INHIBIT pin should not be left floating. It must be tied to either HIGH or LOW to ensure proper operation.

Q3: Can I use the CD4052 with a 3.3V microcontroller?
Yes, the CD4052 can operate with a supply voltage as low as 3V, making it compatible with 3.3V systems.

Q4: How do I reduce crosstalk between channels?
To minimize crosstalk, use short and shielded signal paths, and avoid high-frequency signals if possible.