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Obtaining original National Semiconductor datasheets and application notes
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VK3DRB:

--- Quote from: SilverSolder on October 10, 2021, 04:36:52 pm ---
--- Quote from: jh15 on October 10, 2021, 03:10:14 pm ---When I think of tossing my 70's and 80's data books, I see something like this and hang onto them.

--- End quote ---

Some of those old data books are available as scanned PDF documents...  Hopefully, one day, they all will be.   Paper has a finite life...

--- End quote ---

Digital has will have a much shorter life unless it is duplicated onto new media ad-infinitum. The Dead Sea Scolls are around 2,000 years old - some are 2,400 years old. Don't be surprised if most of the digitised datasheets from today will have disappeared from existence in 50 years. Magnetic media, digital media etc, have a very short lifespan compared to paper. You only need eyes to read paper. What are you going to read digital storage with?

Newspapers and books are gradually disappearing. I can see in 1,000 years that if there are any humans left, they will look back and see a big black hole for our existence in the 21st century. All our buildings will be long gone. All the digital media will be gone. Most of our technology will be gone.
SilverSolder:

--- Quote from: VK3DRB on October 11, 2021, 11:29:47 am ---
--- Quote from: SilverSolder on October 10, 2021, 04:36:52 pm ---
--- Quote from: jh15 on October 10, 2021, 03:10:14 pm ---When I think of tossing my 70's and 80's data books, I see something like this and hang onto them.

--- End quote ---

Some of those old data books are available as scanned PDF documents...  Hopefully, one day, they all will be.   Paper has a finite life...

--- End quote ---

Digital has will have a much shorter life unless it is duplicated onto new media ad-infinitum. The Dead Sea Scolls are around 2,000 years old - some are 2,400 years old. Don't be surprised if most of the digitised datasheets from today will have disappeared from existence in 50 years. Magnetic media, digital media etc, have a very short lifespan compared to paper. You only need eyes to read paper. What are you going to read digital storage with?

Newspapers and books are gradually disappearing. I can see in 1,000 years that if there are any humans left, they will look back and see a big black hole for our existence in the 21st century. All our buildings will be long gone. All the digital media will be gone. Most of our technology will be gone.

--- End quote ---

There will always be archive.org!  :D
magic:

--- Quote from: evb149 on October 10, 2021, 01:05:14 am ---To add further injury to insult, surely I cannot be the only one that finds the actual TI web site's "search" function to be basically nearly uselessly bad.  Many, many, many times have I entered part numbers, document numbers, keywords, etc. which are 100% undoubtedly things that DO correspond to actual TI originated (not even only borged BB / NS / UNITRODE / CHIPCON...) parts / documents / articles / packages / ... and the search either gives no results or completely uselessly wrong ones.

Here's one example, copied right out of the official TI literature code for one of their 2016 documents:
"SLYU036".
Nada.
"SLYC147"
"SWRU120D"
SWRU120"

--- End quote ---
Two remarks about TI literature numbers:

Firstly, they can usually be found on TI.com through search engines, of course. Secondly, if there is a letter at the end, it's the document revision number. So SWRU120D means SWRU120 rev. D.

And this is very handy, because particular revisions can also be found through search engines on other websites like component distributors. So when TI does something like dropping LM358 in DIP package and only offering them in micro BGA and of course removes any mention of DIP from the datasheet as they always do, it's simply a matter of taking the full literature number, "decrementing" the final letter and boom, you have a keyword to look for the earlier revision. I have done it several times with success so far.

(Of course the problem wouldn't exist in the first place if TI didn't remove information about obsolete parts and packages or maintained an organized archive of their current and past datasheets, but that's not how they roll).
peter-h:
I have maybe 100kg of data books going back to the 1980s, which anyone can have if they want to collect them. I have not referenced any of them in 20+ years, except for nostalgia purposes. One day they will all get chucked in the skip, which seems a waste.

South east UK, on the coast. PM me if interested :)
Neomys Sapiens:

--- Quote from: srb1954 on October 11, 2021, 07:36:52 am ---
--- Quote from: magic on October 09, 2021, 04:53:09 pm ---I edited the original post with URL pattern for Linear Briefs.

Which ones?
I have had good success finding very old ANs in scanned application books at Bitsavers and several late, 21st century ANs at Archive.org. I think these two sources cover close to 100% of them all.

edit
Maybe not. I just checked the oldest application books I have, many numbers are missing. I have no idea what AN-9 was.

--- End quote ---
AN-9 is omitted from the Feb 1973 Linear Applications Handbook, the earliest NS applications handbook I possess.

It must have been for a very early NS device as it sits between AN-8 New Uses for the LM100 Regulator (dated June 1968) and AN-10 Low Power Operational LH001 Amplifier (dated December 1968).

Perhaps it was for an NS device that was withdrawn from the market very early in its life.

--- End quote ---
Are you sure? I know AN-8 as 'A fast, integrated voltage follower' (LM102) dated May68
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