7400

[pho@vmsa.oac.uci.edu]

fmlin@netcom.com (Frank M. Lin) writes:

> You said to replace 74F00 with 74HC00.  I see many difference 74HC00 in
> Digi-Key's catalog.  But looking at the part #, there is only two actuly
> 74HC00:
>
> part #          description                     pkg.            price
> MM74HC00M       Quad 2-In NAND Gate             SO-14           .30
> MM74HC00N       Quad 2-In NAND Gate             14-Dip          .28
>
> All the other ones have MM74HCxx where xx are not 00, so I guess they're
> not the right ones.
>
> Which one of the two is the correct one?  Or will both work?

They're both the same logic.  The only difference between the two parts is the
packaging.  SO-14, I believe, is a surface mount package and 14-Dip is exactly
what it says and is the one you need.