This logic level converter is designed for connecting two devices with different working voltage. It can safely steps down 5V signals to 3.3V and steps up 3.3V to 5V. The converter has 4 inputs and outputs (lines ?1? and ?4? are bidirectional, and ?2? and ?3? unidirectional) and can be used with:
The wiring is very simple. A example is shown below.