74AHCT125 - Quad Level-Shifter (3V to 5V) [74AHCT125]
A quad level-shifting buffer IC that excels at converting 3V logic signals up to 5V. Power the 74AHCT125 with 5V and it will cleanly detect 3.3V logic inputs — particularly useful when connecting devices like Teensy 3.x to NeoPixels or other 5V peripherals.
To use, apply 5V to VCC, connect GND, and tie the /OE (output enable) pins low. Data enters on the A pins and exits on the corresponding Y pins. You can also power it at 3V to safely read 5V logic inputs for stepping down voltage levels.
Key Features
- Quad Buffer/Level Shifter – Four independent channels
- 3V to 5V Shifting – Optimised for upshifting 3.3V logic to 5V
- 5V to 3V Capable – Power at 3V to safely read 5V inputs
- Output Enable – Individual /OE pins for each channel
- DIP Package – Breadboard and perfboard friendly
Ideal For
- Connecting 3.3V microcontrollers to 5V NeoPixels/WS2812B
- Raspberry Pi to 5V peripheral interfacing
- Mixed-voltage digital circuits
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Description
A quad level-shifting buffer IC that excels at converting 3V logic signals up to 5V. Power the 74AHCT125 with 5V and it will cleanly detect 3.3V logic inputs — particularly useful when connecting devices like Teensy 3.x to NeoPixels or other 5V peripherals.
To use, apply 5V to VCC, connect GND, and tie the /OE (output enable) pins low. Data enters on the A pins and exits on the corresponding Y pins. You can also power it at 3V to safely read 5V logic inputs for stepping down voltage levels.
Key Features
- Quad Buffer/Level Shifter – Four independent channels
- 3V to 5V Shifting – Optimised for upshifting 3.3V logic to 5V
- 5V to 3V Capable – Power at 3V to safely read 5V inputs
- Output Enable – Individual /OE pins for each channel
- DIP Package – Breadboard and perfboard friendly
Ideal For
- Connecting 3.3V microcontrollers to 5V NeoPixels/WS2812B
- Raspberry Pi to 5V peripheral interfacing
- Mixed-voltage digital circuits
