3 Jan
2003
3 Jan
'03
7:53 a.m.
At 06:01 PM 1/1/03 -0600, you wrote:
On Wed, 1 Jan 2003, Joe wrote:
The 306/307s also have built in BCD decoders. I've been trying to find a data sheet
on the 311 so that I can see what the difference is between it and the 306/307.
At 10:51 PM 12/31/02 -0600, you wrote:
Oops, I have TIL311s, not the 306. I was thinking that the 311s were still
in production. I guess the 311 with a built-in BCD controller must still
be useful in current products. On Tue, 31 Dec 2002, Joe wrote:
Are they? I think mine are about 25 years old. FWIW I went looking for
some at a large local surplus store and found one that I think is
prototype. It's built out of clear material instead of red and is marked
TIXL306 and is date coded 7204 (almost 31 years old!). I went through
several boxs and THOUSANDs of displays and only found one standard 306
and the one prototype.
Does anyone know of another display that can be
substituted for the
TIL 306/307? Here is a data sheet for the 306/307 in case you have a
question about it, <www.alltronics.com/download/TIL306.pdf>.
I don't know of an exact replacement offhand, but I thought these were
still in production? How many of these displays are you looking for? I
believe I still have
a few in my parts bin...
In addition to the one that I found in the store I need three of them.
Mine were in sockets and the dissimilar metal corrosion has eaten off at
least one leg off of each of mine.
I'll make a note to check a couple of my local surplus dealers over the
next few weeks. If I find any TIL306 displays, I'll pick them up. Should I
also hunt for any 307s?
306's or 307s will work equally well. The one difference between them is that one
has the decimal point to the left of the digit and the other has the dp on the right. My
unit doesn't use the decimal points so either display will work fine.
If all else fails, would it be possible to salvage your displays? I've
carefully ground back ceramic and plastic on other dip components to
attach replacement leads in the past, but it isn't a fun task...
It's possible but all the leads on them are weak and I'd probably have to
eventually replace ALL the leads.
Joe
-Toth
3 Jan
3 Jan
5:09 p.m.
On Fri, 3 Jan 2003, Joe wrote:
Ok, thats what I wanted to be sure of. Often devices didn't use the
decimal points, but I didn't want to assume that was the case.
Been there, done that. I have a pile of early 74244s and other 7400 series
logic chips that have nearly nothing left of their leads due to the foam
that were stored in for roughly 15-20 years. Thankfully, the TIL311s and
most of the other chips that came in the same batch of parts didn't have
the same problem, though their leads had to be cleaned.
-Toth
At 06:01 PM 1/1/03 -0600, you wrote:
I have the datasheet for the 311 in pdf format if you'd like me to email
it to you. The 311 has a built-in BCD decoder, but not a counter, like the
306/307.
Oops, I have TIL311s, not the 306. I was thinking
that the 311s were
still in production. I guess the 311 with a built-in BCD controller
must still be useful in current products.
The 306/307s also have built in BCD decoders. I've been trying to find a
data sheet on the 311 so that I can see what the difference is between
it and the 306/307. I'll make
a note to check a couple of my local surplus dealers over
the next few weeks. If I find any TIL306 displays, I'll pick them up.
Should I also hunt for any 307s?
306's or 307s will work equally well. The one difference between them is
that one has the decimal point to the left of the digit and the other
has the dp on the right. My unit doesn't use the decimal points so
either display will work fine. If all else
fails, would it be possible to salvage your displays? I've
carefully ground back ceramic and plastic on other dip components to
attach replacement leads in the past, but it isn't a fun task...
It's possible but all the leads on them are weak and I'd probably have
to eventually replace ALL the leads.
8023
days inactive
8024
days old
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rigdonj＠cfl.rr.com -
tothwolf＠concentric.net