I have read a lot about this subject to safely interface my xbee to an atmega328p running on 5v. I have a logic level converter from sparkfun which its schema is available on http://www.sparkfun.com/datasheets/BreakoutBoards/Level-Converter-v10.pdf. It works perfectly of course.
But, I don’t want to use one of this on my final circuit so I made a circuit and I changed the BSS138 with a 2N2222 because I don’t want to do SMD soldering. So, my question is: is it safe?
My actual schema is attached.
Wagner Sartori Junior