substitute for TI TIL306/307 Display? - test-drb@ccmp.vtda.org

5 Jan 2003

At 01:18 AM 1/4/03 -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. 
     I need the counter function but I'd like a copy of the PDF anyway.
...

   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. 
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.

   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. 
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.  
   Same here. I squirreled away a lot of parts over the years but found that many of them
were damaged due to the foam. Fortunately I've get some pretty good scrap sources and
I've been finding lots of military grade cards with socketed ICs in the last couple of
years so I've been picking them up and pulling the ICs and storing them in parts
cabinets. I've amassed a huge stock in just the last year. I was also lucky last year
and picked up a good number of parts cabinets that have all the drawers made out of
anti-static material. I had been keeping the parts in anti-static foam for AS protestion
but now I don't have to.

.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. 
   I have a fair number of 308 and 311 displays that I've pulled from cards and the
local surplus place has plenty of them but the 306/307s seem to be scarce.

    Joe

...

-Toth