SDAA261 March 2026 TCA9846
Modern systems use different protocols to communicate between parts. One of those protocols is I2C, where there is a controller communicating with different targets on the I2C bus. Usually, such systems leverage I2C multiplexers to allow communication with more targets without worrying about address conflicts or bus capacitance. Advancements in technology have improved the I2C protocol, allowing communication to be faster than before. Fast Mode Plus allows the I2C bus to transfer signals at 1MHz speeds compared to older modes operating at only 400kHz. To still be able to leverage the benefits of implementing a multiplexer in I2C systems, it must be able to support faster speed communications introduced by the Fast Mode Plus. The TCA984X family can provide such a design.