[vcf-midatlantic] Can anyone identify this mystery IC

[Douglas Crawford]

Ah, now we are getting somewhere.
We can only guess then, from the remaining metalization layer
correct?  Educated guess?

On 8/21/2022 12:43 PM, Dave McGuire via vcf-midatlantic wrote:
> On 8/21/22 12:39, Douglas Crawford via vcf-midatlantic wrote:
>> These are the transistors?
>> https://imgur.com/aLpqVpE
> 
>    I'd need to look more closely, but those appear to be clusters of 
> transistors, six of them.  They are likely gates.
> 
>> I got one additional response from another designer:
>> "Looks like some kind of gate array with only the metalization layer 
>> being clearly visible. I worked on alot of these in the late 70's. I 
>> have no explanation for the bonding pad structures."
> 
>    Agreed; this has either had its passivation layer removed, or it had 
> never been applied.  I suspect the latter, as it would've been removed 
> with acid, and there isn't so much as a trace of debris from that.
> 
>              -Dave
>