On Tue, 5 Aug 2003, Vasile Surducan wrote:

> On Mon, 4 Aug 2003, Mike Singer wrote:
>
> > I wrote:
> > > Another case:
> > > Battery operated PIC (low power consumption, variable
> > > Vdd, sleep mode) to control an external device sinking,
> > > say, 20 mA.
> >
> > Sorry, not "sinking" but "sourcing":
> >
> > "...an external device _sourcing_, say, 20 mA."
> >
> > Open drain should sink current.
> >
>
>   Are you positive sure ? I think an open drain could also source (not
sink like in the previous post) current...
> No one say that PIC can't be supplied with Vdd = 0V and GND = -5V.
> So, in respect to the human convention of standardize everything, then
> sourcing and sinking are just some words related to ground, which can be
> any...
>
> best regards,
> Vasile
>
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