Texas Instruments TCA9406 TCA9406 Dual Bidirectional 1-MHz I2C-BUS and SMBus Voltage Level-Translator TCA9406YZPR

The TCA9406YZPR is a dual bidirectional voltage level translator designed for I2C and SMBus applications, capable of operating at frequencies up to 1 MHz. It supports voltage levels from 1.65 V to 3.6 V on the A-side and from 2.3 V to 5.5 V on the B-side, allowing seamless interfacing between different logic levels. The device features an output enable (OE) pin that can be tied to VCCA or controlled by a GPIO, enabling high-impedance states to minimize quiescent current. It includes internal 10-kOc pull-up resistors on all SDA and SCL pins, and it does not require power supply sequencing, allowing either VCCA or VCCB to be powered first. The TCA9406 also boasts robust ESD protection, with ratings of 8 kV for the B port and 2500 V for the A port, making it suitable for various applications including I2C, SMBus, UART, and GPIO interfacing. The device is available in a compact DSBGA package, making it suitable for space-constrained designs.