SV: [sdiy] Tri-state outputs and CMOS inputs.

[Karl Ekdahl]

Dave

> I can't find a definite answer anywhere to this one -
> Do CMOS inputs need pull-up/down resistors if connected
> directly to the outputs of ,say, a 3-state latch - which is
> not connected to anything else)
> In my experiments, it *seems* to work OK, but there are too
> many variables in the rest of the circuit to be sure....
> 
> My gut feeling is that CMOS inputs *should* need resistors,
> but it'd be good to know for definite.

You should put pull ups/downs on the inputs otherwise you might get weird behavior in certain situations.

Karl

> 
> cheers,
> Dave
> 
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