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Design >> Mixed-Signal Design >> Rise and Fall time
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Message started by ramus12 on Nov 17^th, 2004, 12:46pm

Title: Rise and Fall time
Post by ramus12 on Nov 17^th, 2004, 12:46pm

hi,

what is the ideal rise and fall time that can be specified in the cadence Spectre simulator using IBM 130nm technology?
I am using inuts with the period of 1n, 2n, 4n etc.

Title: Re: Rise and Fall time
Post by ywguo on Nov 19^th, 2004, 7:10pm

Hi,

When you are not confident on the transition time (rise time or fall time), you'd better drive your cricuit with a desired buffer.

You should consider which cell will drive the input (data or clock input). Then use that cell to drive your circuit. So you needn't worry the rise/fall time.

By the way, the transition time of 130nm technology must be much less than 1ns.

Best regards,
Yawei