I managed to find a die shot of LMT324 which is the quad version of the LMT358 (which is a dual op amp).

The link to the die shot is below. On the linked page click on the die image for a higher resolution image.

[URL]https://www.siliconpr0n.org/archive/doku.php?id=bercovici:motorola:lmt324dopt[/URL]

This is on the siliconpr0n site which is a great site for IC die shots and has a number of contributors including Antoine Bercovici who took this shot.

Antoine also has an X page with more die shots.

[URL]https://x.com/siliconinsid[/URL]...

Bit late to this but was wondering this myself so given nobody found the answer decided to look for it myself.

Short Answer: "T" is for Toulouse!

Caveat: This isn't confirmed by the higher powers but its just deduced by the following.

Long answer:

In 1993 the Motorola LMT series appeared out of thin air. There was no fanfare, no publicity, but the series appeared on some distributors parts lists and a few datasheets appeared which later on appeared on some websites though strangely not on Motorola's website (as far as I can ascertain...

AndyBr. I’m an electrical engineer interested in circuit repair