--- product_id: 43037268 title: "HiLetgo PCA9548A TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino" price: "VT2780" currency: VUV in_stock: true reviews_count: 6 url: https://www.desertcart.vu/products/43037268-hiletgo-pca9548a-tca9548a-i2c-iic-multiplexer-breakout-board-8-channel store_origin: VU region: Vanuatu --- # 1.65-5.5V wide voltage range 8-channel I2C multiplexing 400KHz max clock speed HiLetgo PCA9548A TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino **Price:** VT2780 **Availability:** βœ… In Stock ## Summary > πŸ”— Unlock Infinite I2C Possibilities with One Smart Multiplexer! ## Quick Answers - **What is this?** HiLetgo PCA9548A TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino - **How much does it cost?** VT2780 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/43037268-hiletgo-pca9548a-tca9548a-i2c-iic-multiplexer-breakout-board-8-channel) ## 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 - β€’ **Expand Your I2C Universe:** Connect up to 8 identical I2C devices seamlessly on one bus, eliminating address conflicts. - β€’ **Blazing Fast Communication:** Supports up to 400KHz clock speed for rapid data transfer and responsive control. - β€’ **Scalable Control Powerhouse:** Stack up to 8 multiplexers for managing 64 devicesβ€”future-proof your IoT ambitions. - β€’ **Plug & Play Breadboard Ready:** Compact breakout board with headers and built-in pull-ups for quick prototyping. - β€’ **Flexible Voltage Compatibility:** Operates effortlessly between 1.65V and 5.5V, perfect for diverse Arduino projects. ## Overview The HiLetgo PCA9548A I2C Multiplexer Breakout Board is a compact, versatile expansion tool that enables connection of up to 8 identical I2C devices on a single microcontroller bus. Operating across a wide voltage range (1.65-5.5V) and supporting clock speeds up to 400KHz, it simplifies complex sensor networks and enhances project scalability. Designed for easy breadboard integration, it’s a must-have for advanced Arduino and embedded system developers. ## 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* PCA9548A/TCA9548A I2C Multiplexer Breakout board Review: Works well - Works very well, easy to program with Arduino Cloud. No issues, excellent compatibility easy to program I2C protocol Review: A fully fincationa I2C Mux - These work perfectly. I have used several, all worked. Decide whether you want the pins facing up or down ## Features - Interface: I2C IIC - Chip: PCA548A/TCA9548A - Selectable I2C address: 0x70-0x77 - Working Voltage: 1.65-5.5V - Max Clock Frequency: 400KHz ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XXG5G3L | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #1,566 in Single Board Computers (Computers & Accessories) | | Color | Purple | | Customer Reviews | 4.2 4.2 out of 5 stars (34) | | Date First Available | March 30, 2017 | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 0.634 ounces | | Item model number | 3-01-1273 | | Manufacturer | HiLetgo | | Material | FR4 | | Package Dimensions | 3.78 x 2.24 x 0.28 inches | | Part Number | 3-01-1273 | | Size | Small | ## Images ![HiLetgo PCA9548A TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino - Image 1](https://m.media-amazon.com/images/I/611ZXXivfxL.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well *by A***V on May 28, 2025* Works very well, easy to program with Arduino Cloud. No issues, excellent compatibility easy to program I2C protocol ### ⭐⭐⭐⭐⭐ A fully fincationa I2C Mux *by N***E on January 25, 2025* These work perfectly. I have used several, all worked. Decide whether you want the pins facing up or down ### ⭐ Defective module *by M***N on March 13, 2025* The delivery was fast. Unfortunately, the module was defective and didn't properly transmit the signal. ## 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 --- ## 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.vu/products/43037268-hiletgo-pca9548a-tca9548a-i2c-iic-multiplexer-breakout-board-8-channel](https://www.desertcart.vu/products/43037268-hiletgo-pca9548a-tca9548a-i2c-iic-multiplexer-breakout-board-8-channel) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-10*