Datasheet

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.

https://learn.adafruit.com/adafruit-tca9548a-1-to-8-i2c-multiplexer-

breakout

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