--- product_id: 236726148 title: "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" price: "¥3407" currency: JPY in_stock: true reviews_count: 3 url: https://www.desertcart.jp/products/236726148-sparkfun-qwiic-mux-breakout-8-channel-tca9548a-easily-read-multiple store_origin: JP region: Japan --- # 1.65V - 5.5V wide voltage range 8 configurable I2C channels 8 jumper-selectable addresses 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 **Price:** ¥3407 **Availability:** ✅ In Stock ## Summary > 🔗 Unlock Infinite I2C Possibilities — Never Let Address Clashes Hold You Back! ## Quick Answers - **What is this?** 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 - **How much does it cost?** ¥3407 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/236726148-sparkfun-qwiic-mux-breakout-8-channel-tca9548a-easily-read-multiple) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Future-Proof Your Builds:** Designed for professional-grade projects with compatibility across all SparkFun Qwiic boards and beyond. - • **Flexible Addressing Control:** Easily customize up to 8 unique I2C addresses via solder jumpers to scale your projects effortlessly. - • **Plug & Play Qwiic Ecosystem:** Polarized 1mm pitch JST connectors ensure error-free, space-saving connections for rapid prototyping. - • **Robust & Reliable Operation:** Operates flawlessly from -40°C to 85°C with integrated pull-up resistors for stable sensor communication. - • **Maximize Your Sensor Network:** Seamlessly connect up to 64 I2C buses with 8 multiplexed channels—no address conflicts, no limits. ## Overview The SparkFun Qwiic Mux Breakout (TCA9548A) is an 8-channel I2C multiplexer that enables simultaneous communication with multiple sensors sharing the same address. Featuring 8 configurable addresses, it supports up to 64 I2C buses on a single connection. Its compact Qwiic system connectors ensure quick, error-proof setup, while operating across a wide voltage range (1.65V–5.5V) and temperature spectrum (-40°C to 85°C). Ideal for complex sensor arrays, it empowers millennial professionals to prototype faster and scale smarter. ## 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 Breakout enables communication with multiple I2C devices that have the same address that makes it simple to interface with. The Qwiic Mux also has eight configurable addresses of its own, allowing for up to 64 I2C buses on a connection. To make it even easier to use this multiplexer, all communication is enacted exclusively via I2C, utilizing our handy Qwiic system.The Qwiic Mux 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. The address can be changed by adding solder to any of the three ADR jumpers. Each SparkFun Qwiic Mux Breakout operates between 1.65V and 5.5V making it ideal for all of the Qwiic boards we produce in house.The SparkFun Qwiic connect system is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. 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. 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. - 10x Qwiic Connectors: 2x Pass Through (Daisy Chain), 8x Channels ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.6 out of 5 stars 22 Reviews | ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/71j3m-iEiIL.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/81VDLjr7iPL.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/71+d23bvnfL.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/81O2hkP6-YL.jpg) ![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 - 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 January 1, 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 October 2, 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 November 23, 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.jp/products/236726148-sparkfun-qwiic-mux-breakout-8-channel-tca9548a-easily-read-multiple](https://www.desertcart.jp/products/236726148-sparkfun-qwiic-mux-breakout-8-channel-tca9548a-easily-read-multiple) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-20*