ITEM NAME:4x TXS0108E 8 Channel Logic Level Converter 3.3V 5V Bidirectional Full Dupl L8F7 4x TXS0108E 8 Channel Logic Level Converter 3.3V 5V.4x TXS0108E 8 Channel Logic Level Converter. 8-Bit bi-directional 3.3V-5V/5V-3.3V logic level converter board. If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be.