Features:

• The SparkFun bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time.
• This level converter also works with 2.8V and 1.8V devices.
• Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side.
• The level converter is very easy to use. The board needs to be powered from the two voltages sources (high voltage and low voltage) that your system is using.
• High voltage (5V for example) to the 'HV' pin, low voltage (3.3V for example) to 'LV', and ground from the system to the 'GND' pin.