6 Feb
2006
6 Feb
'06
8:02 a.m.
On Mon, 6 Feb 2006, Ethan Dicks wrote:
On 2/6/06, Don North <ak6dn at mindspring.com>
wrote:
What about 7406's for drivers and a quad comparator or differential line
reciever for the receiver side. That way the input threshold would be
settable...
Peter Wallace
I don't have a good solution to this other
than don't configure heavily
loaded / very long UNIBUS segments if you plan to use the 26S10. I don't
see another part that is usable however (other than salvaging old 8641s).
For Unibus projects, I happen to have tubes of NOS 8641s left over
from the COMBOARD days (as well as several cubic feet of scrap
COMBOARDs with several 8641s each, if one wants to pull them from a
6-layer board). We used 8641s and DC013s for our Unibus interface
layer (and real DEC DC005s and DC010s for our Qbus boards).
I don't think I could supply all the Unibus hobbyists in the world,
but I have enough chips for a limited run of new boards. Still, I
think it'd be nice to find something modern that works for bus drivers
and bus receivers.
-ethan