[Techtoolslist] HD74HC14 for HD74LS14

Martin White martin at guddler.co.uk
Sat Aug 13 06:33:15 EDT 2005


AFAIK, HC = High speed CMOS, LS = Low Power Schokkety (sp?)

According to what i have read, you can use them interchangeably ONLY if all of
the inputs and outputs are connected (which they probably are, but you'd need
to check!).

The ones that are properly compatible are the 74HCT14 as HCT = High speed Cmos
with TTL compatible inputs and outputs (hence HCT).

Best bet would be to try it, although if you're ordering in, i guess this is
not the best route!

Hope that helps,
Martin.

On Saturday 13 August 2005 03:37, Daniel Piraino wrote:

> Can an HD74HC14 be used in place of a HD74LS14? Is it the same IC

> or is it different?

>

> Dan Piraino

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