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