The 9690 was a bipolar, ECL comparator, so I doubt that it had any CMOS inside. It could have been some sort of pinch resistor thing or something, some charge migration in an oxide later sort of like the CMOS gate thing. But I'm not an IC guy, and I don't know the physics.
But I went on to say exactly why Greegor - amongst others - needed further education.
It was - at best - anecdotal evidence. Greegor knows an avowed socialist th at he doesn't like. So do I. So what? It doesn't say anything about the uti lity of the political philosophy.
It would be nice if you could start to think, rather than parade transparen tly emotion-based reactions, but this ins't exaactly evidence that the proc ess has begun.
Not for the first time - and they have all posted unpleasant misinformation about me from time to time.
If there is - in fact - a correlation between suffering from Aspergers Synd rome and believing in socialism, I've yet to hear about it.
Calling people Austic or Aspergers is a moderately popular form of mindless abuse used by people who don't really know what the words mean.
Naturally. Unlike you - for instance - I know what the words "Aspergers Syd nrome" and "socialism" actually mean, which does make me you superior. It's not a broad spectrum superiority, but it's significant in this exchange.
Any show of respect for somebody as ignorant and intemperate was you would be quite inappropriate.
My opinions do reflect my prejudices, but they also reflect a program of re ading and thinkign which has clearly gone further than anything you have ev er managed.
What you actually claimed was that I was an Australian Socialist which happ ens to be an extinct species. It was one more bit of evidence that you don' t really know what you are talking about, and I was happy to exploit the op portunity to make that even more obvious.
Why do you think I'm trying to weasel out of anything?
You posted the line "Has your wife been catching on to you, slow man?" but couldn't explain what you thought you meant by it, which fall somewhat shor t of constructive debate.
Greegor's idea of a useful contribution to the usegroup ...
It seems unlikely - that's a very old problem.
An even older problem is that reverse biasing base-emitter junctions (this was a John Larkin circuit) into breakdown produces cumulative damage, which can be largely reversed by baking - the legendary HP technician used to cu re damaged transistors by stubbing out his cigarette on them.
Greegor doesn't know much, Neither do I, but I do know more than Greegor.
Okay, but if you don't tell us the part number we can't be warned, nor can we snicker at you for missing the fine print at the bottom of page
37 where they explain not to do that (added in a revision 6 weeks after you gave up on it).Best regards, Spehro Pefhany
Okay, looked up the datasheet.. abs max differential voltage is only
3.5V, for a 5V supply device. And ft 6GHz devices.. which often have pretty low Vbe breakdown.Eg, this discrete one that has a 1.5V abs max (!) rating:-
Best regards, Spehro Pefhany
SP > AFAIUI chips are normally passivated SP > (there's effectively a layer of glass- SP > actually SiOx/SiNx- on top of the SP > chip with "holes" for the bonding pads. SP > Conformal coating at the chip level. SP > So, moisture is unlikely to be an SP > issue in a low impedance circuit. Did somebody skip that process on a batch? Was Mr. Larkin's high temp bake hot enough to have that annealing effect you described?
ccon67 > Anyone knows why it didn't wake up? No activity power saver function?
You define yourself by the BS you constantly spin. ...Jim Thompson
I remember we were using 256kb DRAMs from TI that had a very high failure rate - is this what you're referring to?
Input has its signal, so I wouldn't call this "no activity"
G > In the middle 80's there were reports G > of water droplets inside of DRAM chips G > causing intermittent failures. JW > I remember we were using 256kb DRAMs JW > from TI that had a very high failure JW > rate - is this what you're referring to? It could be, but I was more curious about what the mechanism of failure was. How could water end up inside the chips? What caused the TI DRAMs to fail so much?
ccon67> Anyone knows why it didn't wake up? G > No activity power saver function? ccon67> Input has its signal, so I wouldn't ccon67> call this "no activity" You hinted at the answer when you used words like "wake up" (or sleep?). LOL
I don't give a s*it about parts that are not powered up. Nor do I stare at my navel for hours on end.
None of which answers what FA said.
Passivation is CVD with a bit of thermal oxide. [This is foo only fab knows exactly.] It really isn't a bake.
I can't speak for bipolar wafers, but ion contamination is usually the killer in MOS. When tweezers were actually tweezers (as in a mechanical device that gripped the wafer from the side), one dirty tweezer could whack a lot of wafers. You get a little sodium on the tweezer and it shoots right into the lattice. Tweezers have been vacuum devices that grip the back for some time. But it is possible VTC was a sloppy fab.
Needless to say those photos of some CEO holding a wafer with their hands means that wafer was a junker in the first place.
Reverse biasing a bipolar diff pair without clamps leads to a change in offset voltage.
Philippine assembly house?
This sounds like the kind of customer you want to lose.
Usually TEOS (tetraethyl orthosilicate) spin-on glass, I think, but maybe sometimes LTO oxide. It has to be low temperature because it's going on top of the back end, so anything above about 300 C is verboten. (At least in the IBM processes I used to know about.)
Cheers
Phil Hobbs
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