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Thread: Pin won't turn off properly
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face BY : John Ely email (remove spam text)



I too have had timing problems with the Philips 74HC123 parts.  The
Philips part produced a significantly shorter pulse than Fairchild's
part.  We use the part for a long pulse (30 seconds or so) and by
using much larger capacitors could still only get to about 26 seconds.

I don't know if this will affect your application, but I can verify the
Philips' part is different.

Regards,

John


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