TXS0102 2-Bit Bidirectional Voltage Level Translator I2C

CJMCU-0102 TXS0102 2-Bit Bidirectional Voltage Level Translator I2C IIC Level Module
This two-bit non-inverting translator is a bidirectional voltage-level translator and can be used to establish digital switching compatibility between mixed-voltage systems. It uses two separate configurable power-supply rails, with the A ports supported operating voltages from 1.65 V To 3.6 V while it tracks the VCCASupply, and the B ports supporting operating voltages from 2.3 V to 5.5 V while it tracks the VCCBSupply this support of both lower and higher logic signal levels while providing bidirectional translation capabilities between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. 

When the output-enable (OE) input is low, all I/Os are placed in the high-impedance state, which significantly reduces the power-supply quiescent current consumption.
To ensure the high-impedance state during power up or power down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.