[Coco] What do you use for pull-up and pull-down TTL resistor values? (LS series) (coco related project but possibly OT)

[Joel Rees]

2019年4月23日(火) 10:31 James Ross <jrosslist at outlook.com>:

> RETRO Innovations wrote:
> > ... noted I (in), and V(hi) and V(lo) for inputs, but the
> > calculation to decide on a resistor that will provide the minimum input
> > current is left as an exercise for the reader.
>
> Yes... that's what I am attempting to do!!
>
> > ... with CMOS families ... will require like than .5mA,
> > so 10K is really overkill (but is almost always fine).
>
> Interesting to know!
>

Are you understanding how this is calculated?

>