Geeetech PCA9306 Voltage Level Translator Breakout for your project 2-bit bidirectional translator for SDA and SCL lines in mixed-mode I2C-bus applications. Standard-mode, Fast-mode, and Fast-mode Plus I2C-bus and SMBus compatible. Less than 1.5 ns maximum propagation delay to accommodate Standard-mode and Fast-mode I2C-bus devices and multiple masters. Provides bidirectional voltage translation with no direction pin. Low 3.5  ON-state connection between input and output ports provides less signal distortion.