Motorola TYA324 IC

[chronos42]

Hi together,
I found an NOS operation amplifier chip in my stock, that is kind of mystrious for me.

The chip was manufactured 1980 an has the old Motorola logo on it. It is clearly recognized as a LM324 or LM2904 from a chip tester.
But why is it labeled as TYA 324 instead of LM 324? What is TYA meaning? I cannot find any information about a TYA 324. Is there something special with this chip or why this strange labeling?
Does anyone have any information about it?

[fzabkar]

I couldn't find anything on the TYA324P, but I did find lots of TYA chips made by Motorola. Most of them appear to have equivalents with regular part numbers.

FWIW, here is a Motorola document dated 2004 which mentions the TYA7805CTV and TYA7809CTV 3-terminal regulators:

https://www.onsemi.com/pub/docs/pcn/13701.pdf

The above regulators were used in Sony CRT TVs:

https://www.google.com/search?q=filetype%3Apdf+filetype%3Apdf%20TYA7805CTV

[chronos42]

Thank you for your answer.

Maybe these parts are made for consumer products, cheaper but with less quality screening?
I don't know. But the fact, that this chip simply does not not exist in the Motorola databooks let me believe that this was a kind of custom manufactoring, cheaper, but mayby slightly out of the standard specifications for a LM324, so it could not be sold as a LM324. But good enough for consumer stuff.

The most annoying thing is, that I have no idea how this part came in my stock....