The small I2C multiplexer PCA9548A allows the connection of up to
8 I2C devices. The multiplexer has 8 different I2C addresses, from 0x70 to 0x77. This can also be used to control 8 multiplexers, resulting in 64 different I2C addresses.
Using this PCA9548A expansion card is straightforward, and it can be used on a breadboard with capacitors and pullups and pulldowns. Some headers are required, and once soldered in, you can plug it into a solderless breadboard.
The operating voltage of 1.8V to 5V allows you to run the 8-channel multiplexer at any logic level.
Specifications:
Size: 20x30mm (0.8x1.2in)
8 different I2C addresses
Operating voltage: 1.8V - 5V
Enables the voltage level implementation between 1.8V, 2.5V, 3.3V and 5V buses
Max. Clock frequency: 400 kHz
SKU: IMCwA-148
