KEY FEATURES OF TXS0108E 8-CH LOGIC LEVEL CONVERTER MODULE: 8 channels can convert up to 8 logic signals Converts voltage levels between 1.2 to 3.6V and 1.65 to 5.5V systems Bi-directional with automatic direction control Each channel operates independently Optimized for open-drain applications like I2C, but can also work in push-pull applications Output enable allows outputs to be disabled
The board has the following I/O connections: VA = Low voltage. Must be lower voltage than VB. Typically tied to 3.3V VB = High voltage. Must be higher voltage than VA. Typically tied to 5VV GND = Ground. Should be common to both voltage systems. A1 / B1 = Channel 1 A2 / B2 = Channel 2 A3 / B3 = Channel 3 A4 / B4 = Channel 4 A5 / B5 = Channel 5 A6 / B6 = Channel 6 A7 / B7 = Channel 7 A8 / B8 = Channel 8 OE = Output Enable. Active HIGH.