--- product_id: 456773685 title: "SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A)" brand: "sparkfun" price: "€ 66.29" currency: EUR in_stock: true reviews_count: 3 category: "Spark Fun" url: https://www.desertcart.gr/products/456773685-sparkfun-qwiic-mux-breakout-8-channel-tca9548a store_origin: GR region: Greece --- # 8-channel I2C multiplexer Compact 1mm pitch Qwiic JST connector 8 configurable I2C addresses SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) **Brand:** sparkfun **Price:** € 66.29 **Availability:** ✅ In Stock ## Summary > 🔗 Unlock Infinite I2C Possibilities — Because Your Sensors Deserve to Talk! ## Quick Answers - **What is this?** SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) by sparkfun - **How much does it cost?** € 66.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/456773685-sparkfun-qwiic-mux-breakout-8-channel-tca9548a) ## Best For - sparkfun enthusiasts ## Why This Product - Trusted sparkfun brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust & Reliable:** Operates across a wide voltage range (1.65V–5.5V) and temperature spectrum (-40°C to 85°C) for industrial-grade stability. - • **Developer-Approved:** Integrated pull-up resistors and compatibility with popular platforms like ESPHome make integration effortless. - • **Plug & Play Precision:** Polarized 1mm pitch Qwiic connectors ensure foolproof, space-saving connections every time. - • **Customizable Addressing:** Eight jumper-selectable addresses let you stack multiple multiplexers on the same I2C port without a hitch. - • **Expand Your Sensor Universe:** Seamlessly connect up to 64 I2C buses with 8 multiplexed channels—no more address conflicts. ## Overview The SparkFun Qwiic Mux Breakout (TCA9548A) is an 8-channel I2C multiplexer designed to eliminate address conflicts by allowing multiple sensors with identical I2C addresses to share a single bus. Featuring eight configurable addresses and jumper-selectable options, it supports up to 64 I2C buses on one connection. Its compact 1mm pitch Qwiic JST connectors ensure easy, error-proof integration, while its wide operating voltage and temperature ranges guarantee reliable performance in diverse environments. Ideal for complex sensor arrays, this breakout is a must-have for professional developers seeking scalable, clean, and efficient I2C management. ## Description Do you have too many sensors with the same I2C address Put them on the SparkFun Qwiic Mux Breakout to get them all talking on the same bus! The Qwiic Mux also has eight configurable addresses of its own, allowing for up to 64 I2C buses on a connection. Also allows you to change the last three bits of the address byte, allowing for eight jumper selectable addresses if you happen to need to put more than one Qwiic Mux Breakout on the same I2C port. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong. Operating Voltage: 1.65V - 5.5V. Operating Temperature: -40 - 85 C. I2C Address: 0x70 (default) up to 0x77. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Review: If you want to use more than one or two I2C devices, get this! - SparkFun's Qwicc circuits might be a little more expensive, but they are well designed and work reliably. The TCA9548A bus expander is a must for integrating a large number of I2C devices, especially if you are using the random unknown quality off brand devices on here or other store fronts. The address is adjustable from severable solder jumpers. It has integrated pullup resistors for each channel. It works well with EspHome. I have each device on it's own bus, to avoid having bus contention issues and calculating pullup values. This doesn't come with cables, so you'll need a Qwiic cable set to work with it. I purchased a crimper and some female socket pins and removed the male pins from the cables to give myself some extra breakout cables. Review: Works great - With a Qwiic cable assortment the whole project was plug&play. ## Features - Do you have too many sensors with the same I2C address Put them on the SparkFun Qwiic Mux Breakout to get them all talking on the same bus! - The Qwiic Mux also has eight configurable addresses of its own, allowing for up to 64 I2C buses on a connection. Also allows you to change the last three bits of the address byte, allowing for eight jumper selectable addresses if you happen to need to put more than one Qwiic Mux Breakout on the same I2C port. - All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong. - Operating Voltage: 1.65V - 5.5V. Operating Temperature: -40 - 85 C. I2C Address: 0x70 (default) up to 0x77. - International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08CHMCSX8 | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 343,305 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 492 in IO Modules | | Customer Reviews | 4.6 4.6 out of 5 stars (21) | | Date First Available | 7 July 2020 | | Item Weight | 18 g | | Item model number | BOB-16784 | | Manufacturer | SparkFun Electronics | | Part number | BOB-16784 | | Product Dimensions | 3.7 x 5.6 x 0.5 cm; 18 g | ## Images ![SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) - Image 1](https://m.media-amazon.com/images/I/71j3m-iEiIL.jpg) ![SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) - Image 2](https://m.media-amazon.com/images/I/81VDLjr7iPL.jpg) ![SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) - Image 3](https://m.media-amazon.com/images/I/71+d23bvnfL.jpg) ![SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) - Image 4](https://m.media-amazon.com/images/I/81O2hkP6-YL.jpg) ![SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) - Image 5](https://m.media-amazon.com/images/I/51hl51FBkFL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ If you want to use more than one or two I2C devices, get this! *by P***S on 1 January 2025* SparkFun's Qwicc circuits might be a little more expensive, but they are well designed and work reliably. The TCA9548A bus expander is a must for integrating a large number of I2C devices, especially if you are using the random unknown quality off brand devices on here or other store fronts. The address is adjustable from severable solder jumpers. It has integrated pullup resistors for each channel. It works well with EspHome. I have each device on it's own bus, to avoid having bus contention issues and calculating pullup values. This doesn't come with cables, so you'll need a Qwiic cable set to work with it. I purchased a crimper and some female socket pins and removed the male pins from the cables to give myself some extra breakout cables. ### ⭐⭐⭐⭐⭐ Works great *by T***R on 2 October 2021* With a Qwiic cable assortment the whole project was plug&play. ### ⭐⭐⭐⭐ Plug the wired ends in by holding the board connector, not just the board *by R***N on 23 November 2021* The female end (mounted on the board) seems a little fragile and may have lacked enough solder. If the board connector was held against the board, it would work, otherwise it was a ghost problem (comes and go without any noticeable or visual reason) Otherwise, 5 stars. I do with they would improve the Arduino example for this board, seems unnecessarily confusing initially when it is really quit simple. Also, the example would not run on my DUE board, what the....! ## Frequently Bought Together - SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) - Easily Read Multiple sensors with The Same I2C Address Or Communicate with Multiple I2C Devices with Different addresses - Board only - I2C Qwiic Cable Kit Stemma QT Wire for SparkFun Development Boards Sensor Board Breakout Breadboard 4 Pin Sh1.0 Connector - SparkFun Qwiic Cable Kit Hook Up I2C Qwiic Development Boards in no time No Soldering Required Includes 10 Different Lengths Styles Breadboardable Polarized 4-pin JST Connector Daisy Chain-able --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/456773685-sparkfun-qwiic-mux-breakout-8-channel-tca9548a](https://www.desertcart.gr/products/456773685-sparkfun-qwiic-mux-breakout-8-channel-tca9548a) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-07-05*