--- product_id: 456773685 title: "SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A)" brand: "sparkfun" price: "€ 39.54" currency: EUR in_stock: true reviews_count: 3 category: "Spark Fun" url: https://www.desertcart.hr/products/456773685-sparkfun-qwiic-mux-breakout-8-channel-tca9548a store_origin: HR region: Croatia --- # 8-channel I2C multiplexer Compact 1mm pitch Qwiic connector 8 configurable I2C addresses SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) **Brand:** sparkfun **Price:** € 39.54 **Availability:** βœ… In Stock ## Summary > πŸ”— Unlock Infinite I2C Possibilities with SparkFun’s Qwiic Mux! ## Quick Answers - **What is this?** SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) by sparkfun - **How much does it cost?** € 39.54 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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 - β€’ **Robust & Reliable:** Operates from 1.65V to 5.5V and withstands extreme temps from -40Β°C to 85Β°C. - β€’ **Plug & Play Simplicity:** Polarized Qwiic connectors ensure error-free, space-saving connections every time. - β€’ **Customizable Addressing:** Eight jumper-selectable addresses let you stack multiple multiplexers without conflict. - β€’ **Future-Proof Integration:** Perfect for complex IoT and sensor-heavy projects, compatible with EspHome and more. - β€’ **Expand Your Sensor Universe:** Seamlessly connect up to 64 I2C devices with 8 multiplexed channels. ## Overview The SparkFun Qwiic Mux Breakout (TCA9548A) is an 8-channel I2C multiplexer designed to expand your sensor network by allowing up to 64 devices on a single bus. Featuring eight configurable addresses and compact, polarized Qwiic connectors, it ensures reliable, error-free connections in a small footprint. Operating across a wide voltage range and temperature spectrum, it’s ideal for professional-grade IoT and embedded projects requiring scalable sensor integration. ## Description SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A) : desertcart.co.uk: Business, Industry & Science Review: 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: 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 | 328,767 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 472 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 ### ⭐⭐⭐⭐⭐ Review *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. ### ⭐⭐⭐⭐⭐ Review *by T***R on 2 October 2021* With a Qwiic cable assortment the whole project was plug&play. ### ⭐⭐⭐⭐ Review *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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/456773685-sparkfun-qwiic-mux-breakout-8-channel-tca9548a](https://www.desertcart.hr/products/456773685-sparkfun-qwiic-mux-breakout-8-channel-tca9548a) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-13*