[IBIS-Users] delay problem

Hello,

I know this problem has been asked several times and answered several times
as well.

So my apologies in advance.

 

Attached is a comparison of hspice and ibis circuits. I want to know 

a)       Why there is a delay at the falling edge.

b)       Where delay information is stored in an IBIS model, if at all.

c)       Does it matter to have a delay? The periods seem to match up.

The IBIS model is created from hspice netlist.

 

Thanks for any feedback,

Regards, 

Ambrish.

 

Ambrish K Varma

akvarma@ncsu.edu

North Carolina State University

ph(919)513-2015, fax(919)515-2285

 





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