---
product_id: 775336242
title: "HiLetgo TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino"
brand: "hiletgo"
price: "€ 0.21"
currency: EUR
in_stock: false
url: https://www.desertcart.ie/products/775336242-hiletgo-tca9548a-i2c-iic-multiplexer-breakout-board-8-channel-expansion
store_origin: IE
region: Ireland
---

# 1.65-5.5V wide voltage range 8-channel I2C multiplexing 400KHz max clock speed HiLetgo TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino

**Brand:** hiletgo
**Price:** € 0.21
**Availability:** ❌ Out of Stock

## Summary

> 🔗 Unlock Infinite I2C Possibilities with One Smart Multiplexer!

## Quick Answers

- **What is this?** HiLetgo TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino by hiletgo
- **How much does it cost?** € 0.21 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/775336242-hiletgo-tca9548a-i2c-iic-multiplexer-breakout-board-8-channel-expansion)

## Best For

- hiletgo enthusiasts

## Why This Product

- Trusted hiletgo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **High-Speed Data Flow:** Supports up to 400KHz clock frequency ensuring fast and reliable communication.
- • **Expand Your I2C Universe:** Connect up to 8 identical I2C devices seamlessly on one bus, eliminating address conflicts.
- • **Customizable I2C Addressing:** Selectable addresses from 0x70 to 0x77 let you stack multiple multiplexers for massive scalability.
- • **Plug & Play Breadboard Ready:** Breakout board design with headers and pull-ups makes prototyping smooth and solderless.
- • **Flexible Voltage Compatibility:** Works effortlessly with both 3.3V and 5V logic levels for versatile project integration.

## Overview

The HiLetgo TCA9548A I2C Multiplexer Breakout Board empowers makers and engineers to connect up to 8 identical I2C devices on a single microcontroller bus by dynamically switching channels. Operating across a wide voltage range (1.65-5.5V) and supporting fast 400KHz clock speeds, it offers flexible addressing (0x70-0x77) for scalable multi-device setups. Designed for easy breadboard integration, this breakout board is a must-have for advanced Arduino and embedded projects seeking efficient sensor expansion without address conflicts.

## Description

Description:  You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your when you realize "Uh oh, this chip has a fixed I2C address, and from what I know about I2C, you cannot have two devices with the same address on the same SDA/SCL pins!" Are you out of luck? You would be, if you didn't have this ultra-cool CJMCU-9548 1-to-8 I2C multiplexer!   Finally, a way to get up to 8 same-address I2C devices hooked up to one microcontroller - this multiplexer acts as a gatekeeper, shuttling the commands to the selected set of I2C pins with your command.   Using it is fairly straight-forward: the multiplexer itself is on I2C address 0x70 (but can be adjusted from 0x70 to 0x77) and you simply write a single byte with the desired multiplexed output number to that port, and bam - any future I2C packets will get sent to that port. In theory, you could have 8 of these multiplexers on each of 0x70-0x77 addresses in order to control 64 of the same-I2C-addressed-part.   We put this nice chip on a breakout for you so you can use it on a breadboard with capacitors, and pullups and pulldowns to make usage a snap. Some header is required and once soldered in you can plug it into a solderless-breadboard. The chip itself is 3V and 5V compliant so you can use it with any logic level.   Packaged included:  1* TCA9548A I2C Multiplexer Breakout board

## Features

- Interface: I2C IIC
- Chip: TCA9548A
- Selectable I2C address: 0x70-0x77
- Working Voltage: 1.65-5.5V
- Max Clock Frequency: 400KHz

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | HiLetgo |
| Item model number | 3-01-1273 |
| Package Dimensions | 9.6 x 5.69 x 0.71 cm; 18 g |
| ASIN | B06XXG5G3L |

## Images

![HiLetgo TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino - Image 1](https://m.media-amazon.com/images/I/611ZXXivfxL.jpg)
![HiLetgo TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino - Image 2](https://m.media-amazon.com/images/I/61QLpT-hp4L.jpg)
![HiLetgo TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino - Image 3](https://m.media-amazon.com/images/I/617nHuW-7jL.jpg)
![HiLetgo TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino - Image 4](https://m.media-amazon.com/images/I/51+Du5sRIiL.jpg)

## Questions & Answers

**Q: Is this compatible with a Raspberry pi?**
A: The simple answer is yes. We use it as an I2c multiplexer to access an array of magnetic sensors which cannot be assigned to different I2c addresses. Since there are two i2c channels on Raspberry Pi 3B's and 4b's, we run two different sensor arrays on a single Pi, or each array being run by its own Pi, depending on how intense the data acquisition volume is required.

## Frequently Bought Together

- HiLetgo PCA9548A TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino
- ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects
- EDGELEC 120pcs Breadboard Jumper Wires 10cm 15cm 20cm 30cm 40cm 50 cm 100cm Wire Length Optional Dupont Cable Assorted Kit Male to Female Male to Male Female to Female Multicolored Ribbon Cables

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-03*