SLVSLJ5 March 2026 TCA9846
ADVANCE INFORMATION
The TCA9846 is an 4-channel, bidirectional translating switch for I2C buses that supports Standard-Mode (100kHz), Fast-Mode (400kHz), and Fast-Mode-Plus (1Mhz) operation. The TCA9846 features I2C control using a single 8-bit control register in which each bit controls the enabling and disabling of one of the corresponding 8 switch channels for I2C data flow. Depending on the application, voltage translation of the I2C bus can also be achieved using the TCA9846 to allow 0.65V, 0.8V, 1.2V, or 1.8V parts to communicate with 3.3V parts. Additionally, in the event that communication on the I2C bus enters a fault state, the TCA9846 can be reset to resume normal operation using the RESET pin feature or by a power-on reset which results from cycling power to the device.