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Stuart

What gives these away as fakes?

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Do they work or are they just plastic blocks with terminals?

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No, those are Phillip Pens.  Extremely useful items with an artistic rendition of the TI logo.

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😅I had to go dig out mine just to make sure, Stuart!

Did TI ever produce, qualify, and/or stamp 4 MHz production ICs?

The ones on the right are the third-party AMI S9900P (Korea) ... no idea if those are fakes.

9900.JPG

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The TI symbol is totally wrong and Philippines has two wrong letters in it. I'm pretty sure QGS is also a code TI didn't ever use on these, and most 9900 chips were produced well before 1987, so 8808 is a suspect production date.

 

In answer to the 4MHz question, I have plenty of them, most purchased long before the onset of the fake invasion. I also have a single 16 MHz-rated 9995, obtained directly from the TI labs in Munich a few decades ago. The 9995s don't generally show up rated at that speed--I've only ever seen one of them.

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Posted (edited)

I would prefer Helocast´s chips from Singapure

 

Edited by Schmitzi
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Yes, instantly I see the logo is wrong, then Philippines was spelled wrong.

But, hmmm does it work?

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AMI was the required second source that allowed the 9900 family chips to be used in government equipment. They had chip factories in the US, Korea, and a few more places.

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2 hours ago, INVISIBLE said:

I've never seen these ones from Korea before.  Where did you get them helocast?

 

I don't remember the Ebay vendor's name, but used to sell BIN sets of four. Not sure if it's the same place, but here's a comparable current listing: https://www.ebay.com/itm/6PC-S9900P-16-BIT-MICROPROCESSOR-LOT-PDIP64/392748041055

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11 hours ago, helocast said:

I don't remember the Ebay vendor's name, but used to sell BIN sets of four. Not sure if it's the same place, but here's a comparable current listing: https://www.ebay.com/itm/6PC-S9900P-16-BIT-MICROPROCESSOR-LOT-PDIP64/392748041055

milparts_online has been selling the S9900s for a long time. I think I've bought at least 20 of them from him over the last 15 years, and all of them were good chips.

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22 hours ago, GDMike said:

Yes, instantly I see the logo is wrong, then Philippines was spelled wrong.

But, hmmm does it work?

Of the 7 received, 4 worked, 3 duds.

 

 

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On 4/4/2020 at 5:14 PM, Stuart said:

What gives these away as fakes?

To summarize the thread: everything.

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I got this from eBay today...is it fake? I dunno. Says, tested..hmmm

One of my machines needs it.. and there's only one way to find out if it works. And that is to try an F18A!!

Haha haha

 

IMG_20200417_145648578.jpg

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Posted (edited)

Pins are highly tarnished, which tells me the chip is probably old stock--not a recent fake. It is odd that there is no TI symbol on the chip, but everything else I see says it may actually be an original chip pulled out of something someone was parting out.

Edited by Ksarul
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