The Criteria of overshoot, undershoot, RingBack for different logic types

John Lin - TAO (LinJohn@mail.dec.com)
Mon, 7 Jul 1997 09:55:15 +0800

Hi ,

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
quality.
over/under shoot =0.2*(Vtt) ,
Ringback= Vref+/-200mv.

Best Regards,
JohnLin
CAE Engineer of the EDA Department.
DEC Taiwan Branch,
Email: Linjohn@mail.dec.com
TEL: 886-3-3900000 ext. 2565

JohnLin
CAE Engineer of the EDA Department.
DEC Taiwan Branch,
Email: Linjohn@mail.dec.com
TEL: 886-3-3900000 ext. 2565