General > General Technical Chat
Obtaining original National Semiconductor datasheets and application notes
capt bullshot:
Having good technical content readily available isn't the way today's sales is intended to work: They want you the speak to their "experts" which in turn recommend you some chips that are the "best" for you. What they recommend wouldn't necessarily be the same as a well informed customer would decide to use.
Why point you to myriads of application of e.g. the TL072 if there's a whole lot of newer, more specialized and more expensive chips available that they can recommend for your needs?
jh15:
When I think of tossing my 70's and 80's data books, I see something like this and hang onto them.
SilverSolder:
--- 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...
magic:
Somebody mentioned Burr-Brown.
Application Bulletins as of August 2000:
https://web.archive.org/web/20000830091506/http://www.burr-brown.com/applications/ABs.html
It's also possible to get product catalogs from 2000 and some earlier years but most datasheets aren't available.
OTOH, Bitsavers has the 1995 databook. In addition to complete specifications, this databook contains die photographs, which may aid in identification of AliBay mystery meat ICs ;)
--- Quote from: capt bullshot on October 10, 2021, 07:12:13 am ---Why point you to myriads of application of e.g. the TL072 if there's a whole lot of newer, more specialized and more expensive chips available that they can recommend for your needs?
--- End quote ---
It gets better. They will sell you a "next generation" TL072H which is actually some rebranded RRO CMOS opamp :D
srb1954:
--- 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.
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