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Topic: Super Simple Bidirectional 5Volt & 3.3Volt Logic Level Converter Needed (Read 2 times) previous topic - next topic

TECH GEEK

As always... Thanks for posting!!!

Jshwaa

Don't know if you guys were paying attention, but cyclegadget found the solution. 

Quote
I have bought a couple of these logic level converters. I haven't tested them yet but, they are really small easy to setup.

http://www.sparkfun.com/products/8745


If you look at the schematic to the device, it uses a simple voltage divider to take 5 down to 3.3, and almost precisely illustrates the same scheme for stepping up the voltage as I suggested, but uses a JFET instead of a BJT.  $2, done. 






retrolefty

Quote
If you look at the schematic to the device, it uses a simple voltage divider to take 5 down to 3.3, and almost precisely illustrates the same scheme for stepping up the voltage as I suggested, but uses a JFET instead of a BJT.  $2, done.


Except for bi-directional I2C data and clock applications.


Lefty

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