3.3v to 5 v signal converter

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sharath.1191

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The operating voltage of Gps receiver module is 3.3v but pic controller is 5v.i need to communicate with these two modules...
 

This is a classic problem : ) There are dedicated level converter devices (check, say On Semi, I think they make some). Alternatively most likely if you connect them directly,
chances are it will be ok - since the GPS module only has an output, and no input. You certainly don't want to connect a 5V output to a 3.3v input, but the opposite case is probably ok.
If it doesn't work then you need a level converter. If you want to make one, then it could be done with mosfets, but for that much hassle, just use a level converter
(but try to connect it without a level converter first).
 
You can build a simple emitter follower if your signal is digital. A simple transistor will do.
 

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