Call for final Elf99 design input

From: Ethan Dicks <erd_at_infinet.com>
Date: Wed Nov 25 07:23:56 1998

On the topic of Elf99 I/O, several people wrote:
 
> > <o A 1851 programmable input/output port -or- a pair of 4508 latches
> >
> > Use the one that is available.
>
> I think it my come down to a cost issue to offset the high cost of some
> other parts perhaps. Use whatever's cheapest.

Which is cheapest is the easy answer - the dual 4508 latches. Between
buffers, latches, etc, it's much less than $5 cost. The 1851 costs over
$10, dual 1852 I/O chips (another suggestion) are about $5 or $6 each.
The question is, is the flexibility (and possible scareness in the future)
worth $10 on the final cost?

-ethan
 
Received on Wed Nov 25 1998 - 07:23:56 GMT