Mega2560 board, IC7 gets very hot?

SurferTim:
I like your datasheet better. This is what I was concerned about, and it is mentioned as one of the main features:
No Output Phase?Reversal from Overdriven Input

Sounds like it is on its way to "transistor heaven"?

How so? I thought I made the case of inputting voltage higher then Vcc to the chip is fine as long as you limit the input current externally to a safe value.

Lefty