Level Shifter - 8 Channel (TXS0108E) Hookup Guide
El Duderino 
Hardware Overview
Let's take a closer look at the TXS0108E level shifting IC and other components on this breakout.
TXS0108E Level Shifter
The TXS0108E is an 8-channel, bi-directional, level shifting voltage translator that works in both open drain and push/pull operations. It accepts a supply voltage range of 1.4V to 3.6V on the A Port and 1.65V to 5.5V on the B Port (VCC_A ≤ VCC_B).
The TXS0108E uses pass gate circuit architecture with integrated edge rate (one shot) accelerators to support data transmission speeds up to 1.2Mbps in open drain operation and up to 110Mbps in push/pull operation. It also has built in pull-up resistors for open drain applications so external resistors are not necessary. For complete information on the TXS0108E, refer to the datasheet.
PTH Headers
The board breaks out out all the TXS0108E's pins to a pair of 0.1"-spaced PTH headers; one for each port. The OE input pin is also broken out on the Port A "side" as it is referenced to VCCA. The board pulls OE LOW through a 110kΩ resistor to disable the I/O pins by default. Make sure to tie the OE pin to VCCA to enable the device.
Board Dimensions
The SparkFun Level Shifter - 8 Channel (TXS0108E) measures 1.10" x 0.50" (27.94mm x 12.70mm).
