6 Feb
2006
6 Feb
'06
10:59 a.m.
From: "9000 VAX" <vax9000 at gmail.com>
On the REV.0 board I used 74LS14 to receive critical
lines (DIN, DOUT,
RPLY...), and plain LSTTL for other non critical lines (DAL0-22, WTBT,
BS7...) and it worked OK too.
Ouch. I'd at least use the 74HCT14, to reduce the bus loading. That
way, the problems will show up with your device, rather than some
other :-).
But you still won't get much noise immunity from the 0.6V Vil.
Vince