[sdiy] Delaying a pulse with a CMOS chip ?

[Linium]

On Dimanche 16 Mai 2004 16:56, Ray Wilson wrote:
> Hi Linium
>
> Use the CD40106 (equiv 74HC14) with an RC on the front to get the delay and
> then re-invert it to get your delayed original. A 10K into 100pF ought to
> give about 10 uS of delay.
>
> Ray
>

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 ?  

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) ?

Thx, 

Linium