If you’ve ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. 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. What really separates this Logic level converter from our previous versions is that you can successfully set your high and low voltages and step up and down between them safely on the same channel. 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.
Dimensions: 0.63 x 0.52" (16.05 x 13.33mm)
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Customer Reviews
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Review by phil
verified purchaser
Rating great and cheap level shifter between 5V and 3.3V logic. You can connect without logic level shifting, but it will be running out of spec and will only work *most* of the time.. (Posted on 10/09/2018)
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Review by Gregory
verified purchaser
Rating Tiny bi-directional logic converter that just works. (Posted on 21/08/2018)
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Review by Glenn
verified purchaser
Rating Great product
(Posted on 20/08/2018) -
Review by Leith
verified purchaser
Rating Simple to use and convenient (Posted on 1/05/2018)
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Review by John
verified purchaser
Rating I'm using this for translating between the Raspi (3v3) UART and the TTL interface of a RS-422 converter which is 5v only. Also for 3v3 <-> 5v conversion on a couple of 1-1wire busses. Seems to work well. Unfortunately it doesn't come with pins so you may want to buy some of those separately. (Posted on 30/03/2018)
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Review by Brendan
verified purchaser
Rating These work as expected... if only SBC makers would incorporate this into their board designs... would make life a whole lot easier! (Posted on 1/11/2017)
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Review by John
verified purchaser
Rating I received this the next day after ordering it, and it works of course. (Posted on 10/08/2017)
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Review by Mervyn
verified purchaser
Rating good as described and prompt delivery (Posted on 21/07/2016)
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Review by Frank
verified purchaser
Rating Does what it says, it's tiny though which makes soldering a bit tricky. (Posted on 10/03/2016)
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