Gosh, I am not so sure about running at a mere 2.0V.

What do you guys think of a NPN Darlington like the MMBTA28-7-F to ground
with a 100k resistor to 5v. I think am going to have to trade squareness
for low power consumption.

The source is a slow moving 0 to 40v signal (with 10us 600v transients)
that can provide up to 10mA. So perhaps a 4.7k input resistor and a ferrite
bead?

On Friday, August 30, 2019, RussellMc <apptechnz@gmail.com> wrote:

> On Sat, 31 Aug 2019 at 06:58, Jason White <
> whitewaterssoftwareinfo@gmail.com>
> wrote:
>
> > I am looking at the datasheet of the 74LVC2G17 " Dual non-inverting
> Schmitt
> > trigger with 5 V tolerant input"
> >
> > I have attached two graphs which I would like help interpreting. My
> > question: do these graphs mean that current consumption goes up to 12mA
> > when the input signal is in the undefined region?
>
>
> Apart from the "minor detail" of being inverters and not buffers, the
> 74HC2G14 / 74HCT2G14 comes much closer to the transition currents that yo=
u
> desire.
> Available drive current is in the order of 4 mA at Vcc =3D 5V.
> Ye olde tech HC/HCT seems to still have some advantages (as Bob noted).
> 2 x 2 input ANDs or 4 x inverters would provide 2 buffers if available.
>
>
> https://assets.nexperia.com/documents/data-sheet/74HC_HCT2G14.pdf
>
>   Icc peak                           for Vcc
>
> 0.2 / 0.6 mA low-high / high-low   at Vcc =3D 5V
> and
> 60 /   80 uA                       at Vcc =3D 2V
>
>
> Russell
> --
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