[sdiy] God! Do I need a simple latch switch!

[Scott Bernardi]

Does the CMOS 555 have the same problem?

Paul Maddox wrote:
> 
> Ken,
> 
> > I had actually started to think about manually
> > clocking (switching) a 555 to generate logic 1 and
> > logic 0, for each 'push', you get a peak and a trough
> > from a square output, in fact I'd use anything that
> > will give that output to drive the'switching in the
> > 4066/16...thats how I think!!!
> 
> NOOOOOOOOOOOOOOOOO!!!!!!!!
> 
> Not a 555, BAD, very BAD, very very BAD!!!
> 
> each time you trigger the 55 iut crowbars and pulls the 5v down to 0v for a
> moment..
> Noisey noisey 5v line....
> 
> If you REALLY want to use discrete, why not use a bistable made from a pair
> of NPN transistors?
> 
> These could drive any number of FETs (in both inverse and normal)...
> 
> Paul Maddox
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-- 
Scott Bernardi
sbernardi at home.net