Sorry to be pedantic now that the original question has been answered, but
having trouble understanding "doesn't necessarily fail".

"doesn't necessarily" implies that there is some flexibility with regard
to the consigning of parts to the -04 grade.

Is there not an absolute limit to exclude parts ? I realise that guaranteed
perfomance is important (perhaps my example of 9.5/10 was not a good
one) but a part that meets -10 specs should be a -10 part. What reason
would there be to reject it ?


From: Andrew Warren <fastfwd@IX.NETCOM.COM>
>
> > All F84's come off the same wafer and are tested for speed
> > performance. An -04 is one that doesn't meet -10 specs, it may even
> > run at 9.5MHz, but not 10MHz.
>
>     Um, no.  It's a small disctinction, but an important one:  A -10
>     part DOES meet the -10 specs, but a -04 doesn't necessarily FAIL
>     to meet them.
>
>     -Andy