[SI-LIST] Re: Overshoot / Undershoot
- From: Andrew Ingraham <a.ingraham@xxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Wed, 18 Jan 2006 23:51:14 -0500
> I have never seen a 5V tolerant 3.3V device that had a clamp device tied =
to
> 3.3V.
Actually, I have. That's one reason why I always question the words
"5V tolerant" in any data sheet. I guess(?) they figure the constant
clamp current is low enough to not overheat their IC, and therefore
they can call it 5V tolerant. Right.
Then there are ICs without clamps that have a 5.5V instantaneous
absolute maximum rating, and are therefore also "5V tolerant." I
guess you can't deny that, even though it's not going to be
interpreted that way.
Regards,
Andy
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