It is a breakout board for the Texas Instruments TXB0104 module. The TXB0104 is a 4-bit bidirectional voltage-level translator with automatic direction sensing.
This 4-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to trace VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to trace VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This permits for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. VCCA must no longer exceed VCCB.
We have now broken out each and every pin for this modules so that you can easily get right of entry to both the A and B ports.
1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (VCCA ≤ VCCB)
VCC Isolation Feature – If Either VCC Input Is at GND, All Outputs Are within the High-Impedance State
OE Input Circuit Referenced to VCC
Low Power Consumption, 5-μA Max ICC