Author Topic: The Chippocolypse is coming!  (Read 16270 times)

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Offline ScribblesOnNapkins

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The Chippocolypse is coming!
« on: October 13, 2015, 02:59:18 am »
TI is declaring END OF LIFE on everything that was made in GFAB6 which I assume was previously owned by National Semiconductor.

I found out about it in a very round about way on a TI forum.
https://e2e.ti.com/support/amplifiers/audio_amplifiers/f/6/t/457875

One member got a copy of this and was nice enough to post it.
http://www.proaudiodesignforum.com/images/pdf/ti_20150901004_09292015_eol.pdf

A lot of this is stuff I could care less about because it is jelly bean stuff like LMC567 but there are nicer things on this list. My fear is what happens next? Are they going to close more fabs? How the heck can they continue to fab LME49720 but not the single LME49710?

TI, they failed to manage BurrBrown correctly and now they are doing the same to National. :(
 

Offline Marco

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Re: The Chippocolypse is coming!
« Reply #1 on: October 13, 2015, 03:56:41 am »
Weird, LMC6001/662 are not on that PDF. Seems doubtful they could just transplant those design to their own processes.
 

Offline bson

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Re: The Chippocolypse is coming!
« Reply #2 on: October 13, 2015, 05:43:33 am »
Yep, just getting the EOL notifications from digikey and mouser.  The 49710 is axed, as is the quad 49740, and the LM4562 in DIP (!).  The 49710 has been my go-to DIP audio band op amp for a while, and it's a really nice little device so I think I'll stock up...
 

Offline German_EE

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Re: The Chippocolypse is coming!
« Reply #3 on: October 13, 2015, 05:53:45 am »
No more LM3916 Dot/Bar Display Driver, that one will be missed by quite a few audio constructors.
Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

Warren Buffett
 

Offline SeanB

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Re: The Chippocolypse is coming!
« Reply #4 on: October 13, 2015, 06:23:00 am »
No more LM3916 Dot/Bar Display Driver, that one will be missed by quite a few audio constructors.

that will probably be cloned soon enough though..... They are pretty expensive in any case for the actual circuit inside.
 

Offline blueskull

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Re: The Chippocolypse is coming!
« Reply #5 on: October 13, 2015, 07:27:30 am »
It is disastrous for Hi-Fi industry!

Look at it, LM4562, LME497x0, LME498x0, LME49990, they are all gone! Performance wise, under some situations, they even outperform OPA1612!

What's much worse, LME49600/LME49610 are gone too! They are irreplaceable by any parts!

And of course, all these chips I grew up tinkering with, 2577, 1876, 386, 2985, 833...
 

Offline blueskull

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Re: The Chippocolypse is coming!
« Reply #6 on: October 13, 2015, 07:50:24 am »
TI is declaring END OF LIFE on everything that was made in GFAB6 which I assume was previously owned by National Semiconductor.

I would have thought it's the other way around (i.e. TI, not NS). The company I work for was using the LM393 (DIP8) from TI and we had to change to those from National, the TI version having been axed.

Just curious, do you need to do all the compliance tests and certifications again after a part was changed to a different brand or suffix number?
 

Offline JoeB83

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Re: The Chippocolypse is coming!
« Reply #7 on: October 13, 2015, 07:58:39 am »
Crap. Thanks for the heads up, I've used LME49600, LM4562, LM49990, LM3875, and many more in my audio designs. Time to stock up.
 

Offline JoeB83

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Re: The Chippocolypse is coming!
« Reply #8 on: October 13, 2015, 08:12:20 am »
What's much worse, LME49600/LME49610 are gone too! They are irreplaceable by any parts!

I love the LME49600-I've used it a lot-but BUF634 is pretty close to the LME49600. Plus it comes in SO-8 & TO-220-5, and DIP-8 in addition to DDPAK.

http://www.ti.com/lit/ds/symlink/buf634.pdf
 

Online dmills

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Re: The Chippocolypse is coming!
« Reply #9 on: October 13, 2015, 07:24:15 pm »
Just curious, do you need to do all the compliance tests and certifications again after a part was changed to a different brand or suffix number?
Not usually unless the part was safety related (Fuse, Opto across an isolation barrier, transformer, stuff like that) or you are in a regulated industry (Medical, safety critical applications, avionics...).

I would note that many of those parts seem to have very close equivalents, there are only a few really unique parts being discontinued (Those high current buffers being the boring ones, but there are near equivalent parts there, at the cost of a minor board respin).

This is why you try to NEVER design in a single source component unless you really have no choice in the matter, and for line evel audio at lowish impedance there is little wrong with the 5532/34 which is second sourced by **EVERYONE**.

Regards, Dan.
 

Offline John Coloccia

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Re: The Chippocolypse is coming!
« Reply #10 on: October 14, 2015, 05:03:21 am »
I'm a huge fan of the LM833 for a lot of the work I do. Fortunately it looks like they're just killing off the DIP package but the surface mount ones are still available.

Oh well...I've been meaning to get a hot air station and dispenser anyway. I've already had to change some JFets over to surface mount. It really doesn't seem like a big deal except for a couple of chips that really have no good equivalent right now.

Incidentally, the J201 (that I had to switch over to surface mount because of sourcing issues in through hole) is even being cloned now in a throughole package if anyone really wants it. I'm sure the clones will show up soon enough.

edit:
Now that I think of it, I think I'm already using the ON Semi LM833, so no worries. :)
« Last Edit: October 14, 2015, 05:10:07 am by John Coloccia »
 

Offline ScribblesOnNapkins

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Re: The Chippocolypse is coming!
« Reply #11 on: October 14, 2015, 06:21:37 am »
It is disastrous for Hi-Fi industry!

Look at it, LM4562, LME497x0, LME498x0, LME49990, they are all gone! Performance wise, under some situations, they even outperform OPA1612!

What's much worse, LME49600/LME49610 are gone too! They are irreplaceable by any parts!

And of course, all these chips I grew up tinkering with, 2577, 1876, 386, 2985, 833...

For the LME49710 which I use at work we are considering the Maxim (ya i know) MAX9632

http://datasheets.maximintegrated.com/en/ds/MAX9632.pdf
 

Offline ScribblesOnNapkins

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Re: The Chippocolypse is coming!
« Reply #12 on: October 14, 2015, 06:25:41 am »
Weird, LMC6001/662 are not on that PDF. Seems doubtful they could just transplant those design to their own processes.

Marco are you sure those are made on GFAB6? I would think they would share the same node as the LMP series which is also extremely low bias current field effect.
(are they using teflon in the gate of the mosfets on those chips?)
 

Offline calexanian

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Re: The Chippocolypse is coming!
« Reply #13 on: October 14, 2015, 06:58:05 am »
I am really surprised to see a few on there that they are not migrating to other fabs, that we know of anyways. Analog must just be disappearing at a crazy rate from new designs.
Charles Alexanian
Alex-Tronix Control Systems
 

Offline ScribblesOnNapkins

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Re: The Chippocolypse is coming!
« Reply #14 on: October 14, 2015, 01:13:16 pm »
Digital stuff is easier to migrate between fabs. The analog stuff is a very different process.

Digital chips require a small feature size. Analog requires as fine control on things like transistor characteristics as possible.

The idea that digital is replacing analog is a myth. It was really only true in that one wave of change that replaced analog computers with digital ones.
 

Offline JoeB83

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Re: The Chippocolypse is coming!
« Reply #15 on: October 14, 2015, 02:30:36 pm »
Just a warning to my fellow EEVblog readers:

I just stocked up on all my soon-to-be-disco favorites on Mouser. A couple are ALREADY out of stock-if you want to stock up, do it soon. I haven't checked Digikey or Newark, (long story, I only shop @ Mouser) but I wouldn't be surprised if the same happens there.
 

Offline fivefish

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Re: The Chippocolypse is coming!
« Reply #16 on: October 14, 2015, 03:12:01 pm »
This just pisses me off. 
 

Online coppice

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Re: The Chippocolypse is coming!
« Reply #17 on: October 14, 2015, 03:26:39 pm »
Just a warning to my fellow EEVblog readers:

I just stocked up on all my soon-to-be-disco favorites on Mouser. A couple are ALREADY out of stock-if you want to stock up, do it soon. I haven't checked Digikey or Newark, (long story, I only shop @ Mouser) but I wouldn't be surprised if the same happens there.
This is just scare mongering. TI are accepting orders until 28 Sep 2016. That's almost another year. People who need these parts are encouraged to work out their product lifetime needs and buy accordingly.
 

Offline JoeB83

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Re: The Chippocolypse is coming!
« Reply #18 on: October 14, 2015, 03:31:16 pm »
Just a warning to my fellow EEVblog readers:

I just stocked up on all my soon-to-be-disco favorites on Mouser. A couple are ALREADY out of stock-if you want to stock up, do it soon. I haven't checked Digikey or Newark, (long story, I only shop @ Mouser) but I wouldn't be surprised if the same happens there.
This is just scare mongering. TI are accepting orders until 28 Sep 2016. That's almost another year. People who need these parts are encouraged to work out their product lifetime needs and buy accordingly.

If I was associated with TI, probably so. You're also probably right, I'm sure more orders will come in. Just trying to be helpful!  :)
 

Offline jwm_

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Re: The Chippocolypse is coming!
« Reply #19 on: October 14, 2015, 04:37:43 pm »
Step 1. Buy up stock of soon to be discontinued chip
Step 2. Write an article for audiophile magazine extolling the benefits of the chip.
Step 3. Profit

Offline JoeB83

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Re: The Chippocolypse is coming!
« Reply #20 on: October 14, 2015, 05:10:52 pm »
Step 1. Buy up stock of soon to be discontinued chip
Step 2. Write an article for audiophile magazine extolling the benefits of the chip.
Step 3. Profit

 ;)
 

Offline blueskull

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Re: The Chippocolypse is coming!
« Reply #21 on: October 14, 2015, 05:15:35 pm »
Step 1. Buy up stock of soon to be discontinued chip
Step 2. Write an article for audiophile magazine extolling the benefits of the chip.
Step 3. Profit

And don't forget the marketing techniques, "hand bonded by nude virgins with unobtainium bond wires".
 

Offline bson

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Re: The Chippocolypse is coming!
« Reply #22 on: October 14, 2015, 06:41:36 pm »
Seems like maybe the LME49710HA isn't EOLed.  This is the TO-99 metal can version.
 

Online coppice

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Re: The Chippocolypse is coming!
« Reply #23 on: October 14, 2015, 06:54:43 pm »
Step 1. Buy up stock of soon to be discontinued chip
Step 2. Write an article for audiophile magazine extolling the benefits of the chip.
Step 3. Profit
It doesn't have to be a gouging exercise like that. There are some companies who specialise in stocking end of life parts from major semiconductors makers, and keeping them in good condition for years. Rochester Electronics is the most famous of these. They certainly charge for what they do, but the capital tied up in stocking stuff for years must be considerable. I assume their customers find overall value for money in what they do.
 

Offline ScribblesOnNapkins

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Re: The Chippocolypse is coming!
« Reply #24 on: October 15, 2015, 04:30:24 am »
Just a warning to my fellow EEVblog readers:

I just stocked up on all my soon-to-be-disco favorites on Mouser. A couple are ALREADY out of stock-if you want to stock up, do it soon. I haven't checked Digikey or Newark, (long story, I only shop @ Mouser) but I wouldn't be surprised if the same happens there.
This is just scare mongering. TI are accepting orders until 28 Sep 2016. That's almost another year. People who need these parts are encouraged to work out their product lifetime needs and buy accordingly.

No if you are designing something right now and it is meant to have a lifecycle longer than this it will be an issue. I was working on something that has to be available for at least 4 or 5 years.
 


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