8 Channel 5V/3.3V IIC UART SPI TTL Logic Level Converter for for Raspberry Pi 8 Channel Level Conversion Module

Product features:
8 channels logic high voltage and low voltage logic two-way transformation, realize the Ax and Bx bidirectional transfers.
Conversion level range: 1.8 V to 6 V
Module size: 28 mm X 27.5 mm
Instructions: (to 3.3 V, 5 V to each other)
VCCA 3.3 V power supply
VCCB connect 5 v power supply
GND connect power cathode, two power supply
Ax input 3.3 V TTL level, Bx will output 5 V TTL level
Bx type 5 V TTL level, Ax the output 3.3 V TTL level