2 Jun
2006
2 Jun
'06
11:15 p.m.
On Friday 02 June 2006 09:11 pm, Chuck Guzis wrote:
On 6/2/2006 at 8:49 PM Roy J. Tellason wrote:
I don't use one-shots much myself, but I do have a couple of those, both the
LS and the straight 9602 versions, maybe one and two of them. I notice
that some designers seem to favor those though I'm not familiar enough with
the details to know just why that is.
Back in '78 when I was messing with that H11 system that at that time had _no_
external storage except for paper tape, the company got a hold of a dual
cassette drive to evaluate. I got the job of seeing if I could come up with
an interface for the '11, and did get as far as wire-wrapping a board but
never got the handshaking right and the machine never recognized it. I
recall a conversation on the phone, though, where this guy at the company
who'd sent out the drive advised *very* strongly against the '123 parts,
saying that they had some serious stability issues, or somesuch. I do know
I hardly ever see them used, with the 96x02s being more common for some
reason.
I've heard that, in particular that Fairchild
had made some early TTL in
the 9000 numbers, I think it was? But I seldom run across any of that
info
at all, these days, and didn't then. First
TTL databook I have goes
back
to about 1970, and is a TI book with the
standard, H, and L series in it
only.
When I'm working something out that needs a dual one-shot, I use a 96LS02. And let's not forget the Signetics 8Txxx TTL
stuff.
I did forget about those. I also remember seeing them in some databook here,
though with things in their current state of disarray I wouldn't begin to
guess which book that was. I also remember those with some other numbers
attached, maybe something like "8T97/8097" perhaps?
Japanese numbers can be a problem if they're not
conventional. Mitsubishi
and Fujitsu particularly. I've got lots of "what the heck is this thing"
samples of both.
I've managed okay with their transistors -- and those numbers seem to make up
the bulk of my data, for sure, as well as a lot of my salvage lately. The
chips, though, are another matter entirely.
And I haven't really even begun to seriously dig. There's both a mass of
stuff in books here that I could just enter some basic info on, and a whole
lot more out there on the 'net that I haven't dug into yet -- most of that
stuff came from one or two sites, which I stopped using when they started
"branding" datasheets, none of which I've uploaded. I've a couple of
others
to hit for replacements, and then all of the manufacturer's sites yet.
One guy had a bunch of stuff on a web page a while back and it looked like a
link to my pages would fit in well, so I dropped him an email. The one word
that stands out in my recollection from his response was "Ambitious!" :-)
Not that I ever actually started out to try and make this project happen,
initially. It was more a matter of getting some data on some parts I
happened to have around (which is why there are part entries with no data at
all, I have 'em and haven't found any yet) and arranging what data I did
find into a form that I found useful. I'm glad to see some other folks
finding it useful as well, and it looks like more folks are doing so lately,
particularly since I added the datasheets to the pile since I changed hosts.
More data in whatever form is welcome, and I'll add it as time permits.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin