Corrected:



> >
> >              3.3v   3.3V
> >               o     o
> >               |     |
> >              .-.   .-.
> >          10K | |   | | 10K
> >              | |   | |
> >              '-'   '-'
> >               |     |
> >               |     |
> >               |    ---
> >             o-+----/ v-------o 0/5v in
> >
> >      0/3.3v out
> >
> >
> > Only disadvantage I see is that it requires access to (and draws
> > current from) the 3.3V supply (or you could create a local 3.3V supply
> > from the 5V supply, but that would add at least one part.
>
>
>This I disagree with.  I think the base of the transistor should also be at
>3.3V for correct operation.

Yes, you're absolutely right, of course. mea culpa.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads