On Fri, 2007-01-12 at 22:57 -0500, David VanHorn wrote:
> >
> >
> > +3 to -3 volts is invalid.  -15 to -3 is logic 1, +15 to +3 is logic 0.
> 
> 
> Most receivers (all?) take <3V to be equivalent to negative.

Perhaps most, but most certainly not all. I've encountered cases where
0V would be flacky, sometimes registering as a logic 1, sometimes not.

I would never build something that relied on 0V working.

TTYL

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