NXP 2-Channel I/O Expander I2C 8-Pin SO8, PCA9306D,118

The NXP PCA9306 is a dual bidirectional I2C bus and SMBus voltage level translator with an enable (EN) input, and is operational from 1.0 V to 3.6 V.The PCA9306 is not a bus buffer like the PCA9509 or PCA9517A that provide both level translation and physically isolates the capacitance to either side of the bus when both sides are connected.

Lock-up free operation
Flow through pinout for ease of printed-circuit board trace routing