MOTM-120 Mod suggestion

Karl Helmer Torvmark karlto at invalid.ed.ntnu.no
Tue Nov 3 11:09:48 CET 1998


HCT has a lower noise margin than HC, because the logic levels aren't
symmetrical. Otherwise, they are identical.

--------
Karl H.

On Mon, 2 Nov 1998, Arthur Harrison wrote:

> Hi everybody,
> 
> I think the "T" in "HCT" implies that the inputs of such devices are
> voltage-level compatible with TTL logic.  I noticed that many vendors
> are only carrying the HCT parts now, since (perhaps) they can always
> substitute for the HC versions.  If anyone knows otherwise, please inform.
> 
> Art




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