[sdiy] Clock signal detector

[Ullrich Peter]

>> Is there any particular reason not to use a microcontroller for this?
>
>Overkill. Why use an entire 8-bit processor as a monostable timer?
>Even for the most basic chip, most of the chip's resources are completely wasted.
>
>Aside from that, no, no reason. It'd do the job admirably.

Yes, Overkill.

I use a 74HC123 or if it has to be very small the 74LVC1G123
(TinyLogic part) for it. It is a retriggerable Monoflop.
Set the time constant to about 1.5 times the pulse repeptition
time and it should work. And you have a Q and /Q output.

Ciao
Peter


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