[sdiy] Delaying a pulse with a CMOS chip ?

[Ken Stone]

>Thks for the info you sent to me, i implemented it but without this chip. It 
>seems to work ! :)  Since the pulse goes to a 4516 counter, i assume that i 
>don't need the inverter ?  

Correct.

>Or is there some special need for the CD40106 (or equivalant), for instance is 
>the input pin of this chip of a special kind that is needed after the RC 
>thing ? Does it need Schmitt Trigger input to work well  (better stability of 
>the voltage threshold) ?

A schmitt will tidy up the waveshape, which is better when you are driving
an edge triggered input. If it is a level sensitive input (e.g. a data
input) it is not as critical. I do it without any form of buffering when
using 4015 shift registers as I am connecting the delayed signal to a data
input.

however, if it works, it works.

Ken
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
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