Keeping in mind, though, that this is a jellybean part. You're supposed to be able to order "a" 5532 without specifying the supplier, because many vendors produce "a" 5532, and they're all the same. Different vendors' 5532s are supposed to be able to be treated as the same SKU — literally dumped into co-mingled stock in warehouses — with no ill consequence!

(And yes, until TI's recent move, that was true of the 5532. All the other vendors' 5532s had matching datasheet specs, including the 22V max input voltage. Because a design that was built for "a" 5532 was usually built to run it up to 100%; and that a vendor couldn't offer their part as a swap-in if it couldn't do that.)

But now, if your purchasing department (or the supplier they purchase from) happens to order TI 5532s — or if the warehouse they're sourcing from has comingled any TI 5532s into the general 5532 stock — then your product is now broken, with no real recourse except to change your entirely supply chain to one that specifically excludes TI.

The EEVBlog[1] video about this has a nice example of only a single chinese manufacturer offering the same stuff as TI now does, even with the same PNP instead of NPN topology. All the others are comparable to the original.

1: https://youtu.be/22ZmmZ67SMY

> Different vendors' 5532s are supposed to be able to be treated as the same SKU — literally dumped into co-mingled stock in warehouses — with no ill consequence!

That may be true for a small webshop or a brick-and-mortar electronics store (what few of those still exist). Or be true for end users / manufacturers of equipment that includes such a part.

But (afaik) that's not how it works for large reputable distributors like Mouser, Digikey & co. You don't order a generic "5532" there, you order a 5532 from <specified manucturer> there. Part from manufacturer A may, or may not be interchangeable with same-numbered part from manufacturer B. There's even some parts that have same # but very different function between manufacturers. In other words: buyers, designers do your homework.

Likewise in a design, if you specify "5532" that should read as "any manufacturer's 5532 should do". If not (or unsure / untested), one should specify the part including its manufacturer. Or a list of acceptable manufacturer/part# combo's.

Ofcourse changing the spec significantly for a jellybean part like discussed here (and one with many 2nd sources), that's just evil. Change a part like that, give it its own part #.

Dave Jones also did some videos on the LMV321 used in his uCurrent Gold project. The AS5X variant caused issues while others worked fine.

Looking now, a document source suggests the AS5X variant in the parts list... but it's explained in the video around 19:30

https://www.youtube.com/watch?v=1VlKoR0ldIE

>You're supposed to be able to order "a" 5532 without specifying the supplier

This is not true.

>because many vendors produce "a" 5532

This is true, in the sense of a "5532-type part". But you will note that all the 5532 variants have different manufacturer's part numbers (prefixes and suffixes) to prevent this confusion. They don't just do that for branding.

>and they're all the same.

This is emphatically and trivially not true, and it tells me you haven't done the work of carefully comparing data sheet specs across suppliers. Try it, you'll learn something.

>Different vendors' 5532s are supposed to be able to be treated as the same SKU — literally dumped into co-mingled stock in warehouses — with no ill consequence!

That might happen somewhere, but authorized distributors do not do this and volume manufacturers do not do this. You might have an internal part number with an authorized suppliers list that includes more than one variant of 5532 that has been vetted for production.

>And yes, until TI's recent move, that was true of the 5532. All the other vendors' 5532s had matching datasheet specs

Again, emphatically and trivially not true. Take a careful look at the NJM and On Semi data sheets. Spec by spec. Do the work and be amazed.

>the warehouse they're sourcing from has comingled any TI 5532s into the general 5532 stock

Authorized distributors do not do this. It gets hairy when you're sourcing NOS from grey market dealers for old designs or in severe part crunches like 2020-2022 era, but that's a different story.

>no real recourse except to change your entirely supply chain to one that specifically excludes TI

This concept is backwards. You would have an internal part number for 5532-type op amp, and it would have an authorized vendors list that would only include vetted parts. "Any 5532 but TI" is asking for trouble from someone else.

And parts do change or get updated and if you are buying from authorized distributors for production you and your supply chain and quality people will get product change notices. At that point it's your job (or the component engineer's, if you're fortunate enough to have one) to validate the new version or find a suitable alternate.