18 Sep
2013
18 Sep
'13
10:38 a.m.
On 18/09/2013 17:34, David Riley wrote:
On Sep 18, 2013, at 8:45 AM, Pete Turnbull
<peter.turnbull at york.ac.uk> wrote:
Well, I want something that fits an existing IC socket, and for the
moment I'm thinking if one 7401 doesn't have the oomph, piggyback a
second.
Anyone got practical experience of substituting
for an 8881?
My best solution has been
to just use discrete SMD FETs on the output side The problem
is that the 7408 has a different pinout than the 7401/8881 (the gates are
reversed).
I think you mean a 7438 -- right drive capacity, wrong layout.
Your other option would be making NAND gates with
individual transistors:
I've not really looked, but aren't there any single SMD NAND gates that
would fit four to a small piece of real estate?
--
Pete Peter Turnbull
Network Manager
University of York