2 Jun
2006
2 Jun
'06
3:03 p.m.
Hi
I have 9xx DTL in my Nicolet 1080 and it runs on 5 volts, not 6 volts.
DTL can, for the most part be replaced by TTL with the same pinouts.
That is except one case. I don't recall the number but there is a DTL
gate that can be expanded externally with more diodes to create
a wider input.
I built an electronic dice using RTL once. RTL runs at 3.6 volts.
It used a number of jk flops and drove some small LEDs that were
aranged like dice. It ran on a 9 volt battery through a regulator.
It flattened the battery in just a few minutes of operation.
Dwight
From: "Chuck Guzis" <cclist at
sydex.com>
On 6/2/2006 at 1:40 AM woodelf wrote:
I allways remember the polypack ads ... 74xx for
only 5 cents each or so if I recall right.
I remember buying 923 RTL FFs from them for $1 apiece and thinking that it
was a steal. Typical floor sweepings--some packages didn't even have the
leads plated.
I still have a couple of Fairchild 8 bit addressable memories that I bought
from them for way too much. DTL, requiring a 6 volt supply and a 7 volt
clock. Ran hot as a pistol.
My first 741 op amp came from them. My first LED's were purchased directly
from Montsanto as part of their "experimenter's program".
Cheers,
Chuck