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Waveshare 5V 3.3V 8-CH Level Conversion Module for Raspberry Pi
Features 8 channels bidirectional voltage translation between different logic level£¬ translate between Ax and Bx automatically 4 pairs of power supply interfaces£¬ supports more situations Use tantalum capacitors for power filter£¬ provides more stability Voltage level: 1.8V-6V How to Use In the case of translating between 3.3V and 5V system: VCCA/VA connects to 3.3V power supply VCCB/VB connects to 5V power supply GND connects to power negative pole respectively£¬ the two power supply should be common-grounded with each other When Ax has TTL 3.3V input£¬ Bx will get TTL 5V output When Bx has TTL 5V input£¬ Ax will get TTL 3.3V output NO direction control required