resend the question. please answer to my fully E-mail address

John Lin - TAO (
Wed, 9 Jul 1997 09:04:09 +0800


I got many responses from people. However, I could not read them due to
different mailing systems, I thought.
Please use my FULLY EMAIL ADDRESS ,, for replying
so that I could read your mails.

Talking about signal quality. Could somebody tell me about the criteria
of overshoot, undershoot, overshoot ring back, and
undershoot ring back for TTL(5V) , CMOS(5V), LVTTL(3.3V) logic types?

Intel has provided the GTL+ (Vtt=1.5V, Vref=1.0) criterion for signal
over/under shoot =0.2*(Vtt) ,
Ringback= Vref+/-200mv.

Thanks you in advance,
JohnLin -TAO
CAE Engineer of the EDA Department.
DEC Taiwan Branch,
(Due to the exchange mail system,if you are not in the DEC, please use
my full Email address, don't click reply button. Sorry for any
TEL: 886-3-3900000 ext. 2565