74HC4067 16-Channel Analog/Digital Multiplexer Module is a versatile bidirectional multiplexer and demultiplexer board designed to expand the number of analog and digital input/output channels of microcontrollers. This module uses the 74HC4067 IC to allow 16 independent signal channels to be controlled through only a few digital pins, making it ideal for Arduino, ESP32, ESP8266, Raspberry Pi, and other embedded system projects.

The 74HC4067 multiplexer module supports both analog and digital signals and can route 16 input channels to one output or one input signal to 16 output channels. With simple binary addressing through S0-S3 control pins and an EN enable pin, this module provides an efficient solution for connecting multiple sensors, switches, communication devices, and electronic components where available MCU pins are limited.

Features:

• 74HC4067 based 16-channel analog/digital multiplexer module

• Supports 16 independent bidirectional signal channels

• Works with both analog and digital signals

• Functions as multiplexer and demultiplexer

• Compatible with 3.3V and 5V logic systems

• Allows 16 inputs to connect to 1 output

• Allows 1 input to connect to 16 outputs

• Low ON resistance for reliable signal switching

• Supports binary channel selection using S0-S3 pins

• Includes EN (Enable) control pin for switching operation

• Suitable for Arduino, ESP32, ESP8266, Raspberry Pi, and other MCUs

• Helps expand limited microcontroller GPIO pins

• Compact breakout board design

• Easy connection with jumper wires

• Suitable for sensor, switch, and signal expansion projects

How It Works:

• The 74HC4067 IC acts as an electronic switch between multiple channels.

• Four address pins (S0, S1, S2, S3) select one of the 16 available channels.

• The selected channel is connected to the common signal pin.

• The EN pin enables or disables the multiplexer operation.

• The module can transfer analog voltage signals as well as digital ON/OFF signals.

Applications:

• Arduino sensor expansion

• ESP32 and ESP8266 IoT projects

• Raspberry Pi input expansion

• Multiple analog sensor connections

• Robotics control systems

• Automation projects

• Switch matrix applications

• Analog signal routing

• Digital signal switching

• Data acquisition systems

• DIY electronics projects

• Embedded system development

• Testing and measurement equipment

Compatible Devices:

• Arduino UNO

• Arduino Nano

• Arduino Mega

• ESP32 development boards

• ESP8266 modules

• Raspberry Pi boards

• Raspberry Pi Pico

• Microcontroller development boards

• Analog and digital sensors

• Push buttons and switches

How to Use:

• Connect VCC and GND to the power supply.

• Connect S0, S1, S2, and S3 address pins to MCU digital output pins.

• Connect EN pin for enabling or disabling the module.

• Connect signal input/output devices to the C0-C15 channel pins.

• Use programming commands to select the required channel.

• Read or control the connected device through the common signal pin.

Product Instructions:

• Ensure the operating voltage matches the connected controller.

• Do not exceed the maximum current limit per channel.

• Use proper wiring for accurate analog signal measurement.

• Keep signal wires short for better performance.

• Disable unused channels if required using the EN pin.

• Check signal voltage levels before connecting sensitive components.

Specifications:

• Product Type: Analog/Digital Multiplexer Module

• IC Used: 74HC4067

• Number of Channels: 16 Bidirectional Channels

• Function: Multiplexer / Demultiplexer

• Signal Type: Analog and Digital

• Logic Compatibility: 3.3V / 5V

• Operating Voltage: 2V-6V

• ON Resistance: Approximately 60-70Ω

• Maximum Current per Channel: 25mA

• Control Pins: S0, S1, S2, S3, EN

• Channel Selection: 4-Bit Binary Addressing

• Interface Type: Digital Control Interface

• Application: Signal Switching and Input Expansion

• Board Type: Breakout Module

• Shipment Weight: 0.0033 kg

• Shipment Dimensions: 4 x 2 x 2 cm

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