RE: [SI-LIST] : How to correlate max. overshoot and undershoot va lues?

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From: Thomas Jackson ([email protected])
Date: Thu Mar 08 2001 - 11:42:16 PST


Bhavesh,

You can bound the problem by looking at the absolute limits on a data sheet.
A worst case reflection should not exceed the maximum or minimum DC input or
output voltages, which are Vdd + 0.5V and -0.5V for many standard logic
families.

Tom

Thomas L. Jackson, P.E.
Staff�VLSI Design�Engineer
Network Access Development
Systems Solutions Group
FUJITSU MICROELECTRONICS, INC.
3545 North First Street
San Jose, CA� 95134-1804
telephone: (408) 922-9574
facsimile: (408) 922-9618
http://www.fujitsumicro.com

-----Original Message-----
From: Patel, Bhavesh [mailto:[email protected]]
Sent: Thursday, March 08, 2001 11:05 AM
To: [email protected]
Subject: [SI-LIST] : How to corelate max. overshoot and undershoot
values?

Hi! The simulation results give us the maximum overshoot and undershoot the
signal has at the receiver and these values will tell us whether the chip
can tolerate such levels. Now, in some datasheets they do mention the max.
overshoot and undershoot values but some don't, so in these cases how do you
proceed?
One call up the vendor(....too long, is there a second way to decipher form
the datasheet?
Thanks
Bhavesh

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