SparkFun Level Translator Breakout

SparkFun Level Translator Breakout features a PCA9306 dual bidirectional I²C-bus and SMBus voltage-level translator. The PCA9306 translator is operational on the low side from 1.2V to 3.3V and on the high side from 1.8V to 5.5V. Low and high-side reference voltages are applied to the VREF1 and VREF2, respectively, I/O is connected, and the Enable pin is driven high for bidirectional voltage translation.