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Lokkju Brennr lokkju at gmail.comWith a 7805 and max232, it looks like it is probably 5v (the circuit is using the R2OUT/T2IN pins, which are Vcc, so 5v). A MAX3232 with something like a LM2940-3.3 would probably be a *much* better option, and give you real 3.3v. Loki On Fri, May 20, 2011 at 7:43 AM, wpatan <wpatan at gmail.com> wrote: > Please double check if your cable's output is 3.3v... this circuit could fry > your phone. > The output of MAX232 should not exceed 3.3v > > > -- > View this message in context: http://baseband-devel.722152.n3.nabble.com/hmm-sorry-data-cable-question-tp2419703p2965845.html > Sent from the baseband-devel mailing list archive at Nabble.com. > >