That's sort of tough to answer. If you watch the TAT, it starts creeping up slowly, then progressively picks up speed. By the time the ADC's kick off the numbers are a rolling.
To answer the question, I don't recall what temp they actually shut down, but the display will read somewhere around 75 plus or minus.
p.s. Real world they take a lot longer to shut down than the sim. Usually in the sim they'll shut down as you exit the runway.