SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A)

The SparkFun Qwiic Mux Breakout is the perfect solution to your sensor overload problems. If you have multiple sensors with the same I²C address, this device enables you to connect them all on the same bus for streamlined communication. It features eight configurable addresses of its own, allowing for up to 64 I²C buses on a single connection. To make interfacing with this multiplexer even easier, all communication is enacted exclusively via I²C, utilizing the handy Qwiic system.

The Qwiic Mux Breakout also provides the ability to change the last three bits of the address byte, offering eight jumper selectable addresses. This is an essential feature if you need to put more than one Qwiic Mux Breakout on the same I²C port. The address can be adjusted by adding solder to any of the three ADR jumpers. The operating voltage range of 1.65V to 5.5V makes the Qwiic Mux Breakout compatible with all Qwiic boards produced by SparkFun.

The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields, and cables that simplifies the process of prototyping by making it faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This design minimizes the required PCB space and ensures that you can’t hook it up incorrectly. The Qwiic Mux can also be automatically detected, scanned, configured, and controlled using the OpenLog Artemis datalogger system, eliminating the need for programming, soldering, or setup.

Features of the SparkFun Qwiic Mux Breakout include an operating voltage of 1.65V - 5.5V, an operating temperature range of -40 - 85° C, an I²C Address of 0x70 (default) up to 0x77, and ten Qwiic Connectors including 2x Pass Through (Daisy Chain) and 8x Channels. The latest revision of the SparkFun Qwiic Mux Breakout introduces an additional Qwiic connector with a pass through trace to bypass the MUX and daisy chain other Qwiic boards, improving the ease of use of the board.

For further information and technical details, you can refer to the schematic (v1.1), Eagle Files (v1.1), Hookup Guide, Board Dimensions (v1.1), the TCA9548A Datasheet, the SparkFun I2C Mux Arduino Library, the SparkFun TCA9548A Python Package, the ReadtheDocs Documentation, the Qwiic Resource Page, and the GitHub Hardware Repository (v1.1).