Features:TXS0108E High speed full duplex 8-channel level converter module 8-bit bidirectional voltage converter The module chip: TXS0108E High speed full duplex 8-channel level conversion module Provides two-way communication capability The VCCA terminal supports voltage 1.2V-3.6V The VCCB terminal supports 1.65v to 5.5v Can provide 3.3-5V 1.8-3.3v and other common level conversion capabilities Applications:5V microcontroller and 3.3V module 3.3V, microcontroller and 5V module, and other communication compatible with supportting Level conversion between microcontroller and SD card communication Level, conversion between microcontroller and iic, spi serial device.OE active high enable IO recommended by a low voltage side of the IO port.Package included:10pcs TXS0108E High Speed Full Duplex 3.3V to 5V Shifter, 8 Way 8 Channel Level Conversion Module, 8-Bit 8 CH Logic Level Bi-Directional Converter Module, Compatible with Arduino Raspberry Pi