The TCA9548A I2C multiplexer allows you to communicate with up to 8 I2C devices with the same I2C bus. The multiplexer communicates with a microcontroller using the I2C communication protocol. Then, you can select which I2C bus on the multiplexer you want to address.To address a specific port, you just need to send a single byte to the multiplexer with the desired output port number.Features:1 to 8 bidirectional translating switchesActive-low reset inputThree address pins—up to 8 TCA9548A devices on the same I2C busChannel selection through an I2C busOperating power supply voltage range: 1.65V to 5.5V5V tolerant pinsTCA9548A Pinout:PinDescriptionVINPowers the multiplexerGNDConnect to GNDSDAConnect to the master microcontroller SDA pinSCLConnect to the master microcontroller SCL pinRSTActive low RST pin—can be used to reset the multiplexerA0Selects multiplexer I2C address—connect to GND or VCCA1Selects multiplexer I2C address—connect to GND or VCCA2Selects multiplexer I2C address—connect to GND or VCCSD0SDA for channel 0SC0SCL for channel 0SD1SDA for channel 1SC1SCL for channel 1SD2SDA for channel 2SC2SCL for channel 2SD3SDA for channel 3SC3SCL for channel 3SD4SDA for channel 4SC4SCL for channel 4SD5SDA for channel 5SC5SCL for channel 5SD6SDA for channel 6SC6SCL for channel 6SD7SDA for channel 7SC7SCL for channel 7TCA9548A Multiplexer I2C Address:The TCA9548A Multiplexer communicates with a microcontroller using the I2C communication protocol. So, it needs an I2C address. The address of the multiplexer is configurable. You can select a value from 0x70 to 0x77 by adjusting the values of the A0, A1, and A2 pins, as shown in the table below.A0A1A2I2C AddressLOWLOWLOW0x70HIGHLOWLOW0x71LOWHIGHLOW0x72HIGHHIGHLOW0x73LOWLOWHIGH0x74HIGHLOWHIGH0x75LOWHIGHHIGH0x76HIGHHIGHHIGH0x77Tutorial: https://randomnerdtutorials.com/tca9548a-i2c-multiplexer-esp32-esp8266-arduino/Datasheet: https://cdn-shop.adafruit.com/datasheets/tca9548a.pdf
