{"product_id":"tca9548a-i2c-multiplexer","title":"TCA9548A I2C Multiplexer","description":"\u003cp\u003e\u003cem\u003e\u003cstrong\u003eThe TCA9548A I2C multiplexer lets you connect up to 8 same-address I2C devices to one microcontroller. Select channels by writing a byte to address 0x70 (adjustable to 0x77). Stack up to 8 multiplexers for 64 devices.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u0026lt;\u0026gt;\n\u003cp\u003eFound the perfect I2C sensor, then hit the classic problem: the address is fixed, so you can’t use two of the same sensors on the same SDA\/SCL lines. That’s exactly what the TCA9548A 1-to-8 I2C multiplexer is for.\u003c\/p\u003e\n\u003cp\u003eThis handy Adafruit board lets you connect up to 8 I2C devices with the same address to a single microcontroller by acting as a gatekeeper. You simply select which channel you want to talk to, and the multiplexer routes all I2C traffic to that set of pins.\u003c\/p\u003e\n\u003cp\u003eThe multiplexer itself sits at I2C address 0x70, but it can be changed to any address from 0x70 to 0x77. To switch channels, you write a single byte to choose the output port, and from then on, any I2C packets are sent to that selected channel. In theory, you can run up to 8 multiplexers at addresses 0x70–0x77, giving you control of up to 64 same-address I2C devices.\u003c\/p\u003e\n\u003cp\u003eAs with Adafruit breakouts, the chip is mounted on a breadboard-friendly board with the supporting components needed to make wiring simple. You’ll need to solder on the included header so it can plug into a solderless breadboard. The TCA9548A is 3V and 5V compliant, so it works with either logic level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note,\u003c\/strong\u003e You may get an or black JST connector.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/o_QivoOFjuM?si=VS-INhMPThesQtk1\u0026amp;start=352\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWeight: 1.8g\u003c\/li\u003e\n\u003cli\u003eDimensions: 30.6mm x 17.6mm x 2.7mm\u003c\/li\u003e\n\u003cli\u003eSelectable I2C address 0x70-0x77\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDocuments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x TCA9548A I2C Multiplexer\u003c\/li\u003e\n\u003cli\u003e2x 16-pin headers\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":48623661154522,"sku":"geu1789674961297","price":5.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0824\/8318\/3834\/files\/tca9548a-i2c-multiplexer_1.jpg?v=1789674967","url":"https:\/\/memoryfoamwear.shop\/products\/tca9548a-i2c-multiplexer","provider":"My Store","version":"1.0","type":"link"}