Re: [N8VEM-S100:4823] 8080 board BOM questions/Errata?

[Jeff Galinat <jgal...@optonline.net>]

Hi Josh,
  I don't remember the part #'s offhand but I was testing a lot of IC's that I picked up at a hamfest.  The auto ID feature of the tester ID'ed them as something else.  I even manually entered the printed 74XX part number in the tester and it failed but it passed under the IC that it was auto ID'ed as. I tried testing similar chips from another lot & they ID'ed correctly so I had confidence that the IC tester look-up table was correct.  The only conclusion that I can come to is that the 2 chips were mislabeled.  They were older TTL chips so I doubt they were counterfeit.
  I just looked up the TL 866CS programmer /IC tester.  It looks pretty cool as it has the ability to also test 61xx and 62xx types of static memory as well as 7400 TTL & CMOS chips.
I have a separate programmer & a separate IC tester.  My tester will do the 4164/41256 & 4464/44256 dynamic rams but no static rams.   
Regards,
Jeff

On 8/4/2014 11:11 AM, Crusty OMO wrote:

Jeff, I have the same issue... I pack everything away with the idea that it's still useful, I will use it some day.  Of course, in reality, I probably reuse 1% of what I pack away... But every now and then, I come across a project where I'm really happy I had that part in stock.

I recently bought a TL 866CS eprom programmer and IC tester.  I have only used it a couple of times to program.  But it's very neat to think it can test the IC's too. 

How were those mis-labeld IC's?  I heard China relabels some chips to scam people.

:)J