Communica

Analog & Digital Multiplexer Breakout Board Modules In Stock in South Africa

Shop locally supplied analog and digital multiplexer breakout boards at Communica. Ready stock of 74HC, CD4051, CD74HC4067, and more-collection or delivery in South Africa.

robotics and prototyping
June 22, 2026
4 min read

Broad Multiplexer Selection

Analog and digital multiplexer modules supporting a range of channels and voltage logic.

Local Stock & Quick Access

Available now for online order or in-person branch pickup-VAT invoicing for education and industry.

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Discover Multiplexer Breakout Boards in South Africa

Whether you're building a data acquisition setup, expanding limited microcontroller IO, or working on sensor networks in an educational or industrial environment, analog and digital multiplexer breakout boards offer a practical solution. Flexible and cost-effective, these modules allow you to route multiple signals to a single input/output pin, streamlining both hardware and code. Communica stocks a wide array of multiplexer board modules ready for immediate supply from Samrand, Pretoria CBD, and Cape Town branches, with online dispatch throughout South Africa.

What Is a Multiplexer Board?

A multiplexer (MUX) selects one signal from multiple inputs and forwards it to a single output. Analog types (like CD4051 or CD74HC4067) can pass voltages within a given range-well-suited for sensor signals-while digital multiplexers (such as 74HC157, 74HC4052) handle binary logic lines and control signals. Breakout boards integrate these ICs with sockets, pin headers, and onboard features (like pull-down resistors) to simplify prototyping or integration in embedded and test setups.

Popular Multiplexer ICs and Breakout Modules

IC / Module Type Signal Range Common Uses
CD4051 Analog 8:1 0-VCC/TTL Sensor selection, voltage routing
CD74HC4067 Analog 16:1 0-5V/3.3V logic Expanding ADC channels, general purpose
74HC157, 74HC4052 Digital MUX Logic-level Switching logic lines, control
Adafruit/SparkFun MUX Breakouts Analog/Digital Boards As per IC spec Rapid prototyping, STEM labs
Multiplexer modules are widely used in South African university faculties, technical colleges, and R&D departments for expanding experimental testbeds and making the most of limited GPIO on student platforms such as Arduino, Raspberry Pi, or STM32 development boards.

Why Source Multiplexer Boards from Communica?

  • Immediate local stock and branch pickup available
  • Brands include Adafruit, SparkFun, Waveshare, and generic modules for all project levels
  • Support for both 3.3V and 5V logic families-compatibility with micro:bit, Arduino, STM, and Pi
  • Bulk & VAT invoicing for schools, universities, and industry
  • Test equipment, jumpers, and connector kits to assist full prototyping

Browse the Robotics & Prototyping category, use Shop by Brand to explore specific suppliers, or check real-time branch availability via Branches & Trading Hours.

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Specifications & Compatibility Guide

When selecting a multiplexer breakout module, consider these core specs:

  • Channel Count: 8, 16, or multiple parallel MUX for custom needs
  • Signal Type: Analog breakouts support voltage/input range (often up to 5V), while digital types handle logic levels only
  • Logic Voltage: Verify 3.3V/5V support for your development board
  • Onboard Features: Pull-up/down resistors, enable/disable logic, easy pinout
  • Board Format: Standard 0.1"/2.54mm headers or pre-soldered leads for breadboard and panel use

Example: Using a 16-Channel Analog MUX

Imagine you have a Raspberry Pi Pico with only 3 analog pins, but you need to read 12 separate analog sensors. By connecting a CD74HC4067 breakout module, you can multiplex the sensors onto a single ADC input, using four GPIO pins as selectors. In Python:

Selector Logic Example: For 16 channels, use 4 control pins (binary 0 to 15), cycling through channels and sampling sensor data in your loop.

Troubleshooting & Best Practices

  • Ensure clean power supply-noise on VCC will impact analog accuracy
  • Beware of voltage limits: Do not exceed module max rating (typically 5V for logic/analog)
  • Minimise wire lengths and use proper GND returns for stable signal readings
  • Some modules require enable/disable lines held high or low for correct operation

Local Availability & Lead Times

Most multiplexer modules are stocked for immediate collection at Samrand and Pretoria branches, with delivery options for Cape Town and outlying areas. For bulk education orders and ongoing project needs, Communica's team can advise on lead times for large quantities or uncommon ICs (e.g., industrial MUX chips or SMD variants). All purchases are VAT-inclusive with full tax documentation available for institutions and enterprises.

Sources

Communica Samrand — Electronic Component Experts

Communica supplies semiconductors and electronic components to industries such as automotive, electrical, automation, mining, and education.

Last updated: June 22, 2026

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