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 operate between 1.65V and 5.5V making it ideal for all of the Qwiic boards we produce in house.
Documentation and Downloads Links:
Schematic http://www.electronics123.net/amazon/datasheet/SparkFun_Qwiic_Mux_Breakout.pdf
Eagle Files: http://www.electronics123.net/amazon/datasheet/SparkFun_Qwiic_Mux_Breakout.zip
Hookup Guide: https://learn.sparkfun.com/tutorials/qwiic-mux-hookup-guide
Datasheet (TCA9548A): http://www.electronics123.net/amazon/datasheet/tca9548a.zip
Qwiic Page: https://www.sparkfun.com/qwiic
GitHub: https://github.com/sparkfun/Qwiic_Mux_TCA9548A