[sdiy] CMOS clock inputs.

[Roy J. Tellason]

On Saturday 01 April 2006 06:15 am, Dave Kendall wrote:
> > do you have a pull-down/pullup resistor?
> > Ken
>
> Oops!
>
> The clock advances on a Low-High transition, so I guess it should be
> connected between CLK and GND. What would be a good value to start with?
> supply is 0V +15V.
>
> I've had a look in some text books, and an unconnected TTL output floats up
> to HIGH, but it doesn't mention what CMOS inputs and outputs do...

They end up somewhere in the middle...

Typically NOT a good thing!

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