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'[EE]: Mixing 5V and 3.3V logic, which chips to cho'
I need to interface 5V logic (pic) with 3.3V logic. The i/f is SPI and hence I need signals going both ways.
My guess is that there exist dedicated chips for this but I
haven't used them sofar and therefore I don't know which
manufacturers and or designation.
I know I can make the i/f with additional small signal transistors,
but I do not like this solution as the component count in relation
to feature is to high.
And unfortunately I cannot run the pic at 3.3V as I have alot of
other chips that need the 5V. Eventually I will probably replace
most of them and go 3.3V all they way, but at the moment I need
the 'proof of concept' realised with the current design.
http://www.piclist.com hint: To leave the PICList
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