4 channel level shifter module
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Item characteristics
- two High to Low (H->L) converters (74LVC1G125)
- two Low to High (L->H) converters (74AHCT1G125)
- dimensions: 40x20mm (PCB)
- connector spacing = 2.54mm (0.1 inch)
- needs very small space in standing position
- breadboard compatible for hobbyists
Pinout
| VCC | 5V supply pin - High(er) voltage |
| VDD | 2 to 5V supply pin - Low(er) voltage |
| GND | Ground (0V) |
| /E | Output Enable (active low) |
| A | Input |
| Y | Output |
There are four A, Y and /E pin on the module for each level shifter. They are grouped together (see PCB).
How level shifter works?
High to Low converters: (H->L on PCB silkscreen) can be used as 5V to VDD level conversion where VDD is 2 to 5 Volts. (most common 5V to 3.3V)
Low to High converters: (L->H on PCB silkscreen) can be used as VDD to 5V level conversion where VDD is 2 to 5 Volts. (most common 3.3V to 5V)
Connect with Arduino
VCC - 5V
VDD - 3.3V
GND - GND
A - any digital Output (in the same group)
Y - any digital Input (in the same group)
H->L channels will convert 5V signal to 3.3V signal
L->H channels will convert 3.3V signal to 5V signal