[IBIS-Users] Question about modeling a differential output driver

IBIS experts,
 
I have a question about "IBIS Modeling Cookbook for IBIS Version 4.0"
and a presentation refered in it: "Details on True Differential Buffer
Characterization Revisited." 
 
In this presentation, the driver is characterized for Vp=0~1.8V and
Vn=0~1.8V with power supply @ 1.8V.
 
My question is that whether I shall run the simulation for -1.8V to
+3.6V according to IBIS v4.2? The spec requires [Pullup] and [Pulldown]
tables to be specified for -vcc to 2*vcc, which is -1.8V ~ +3.6V in this
case.
 
Or, shall I assume that the series [Model] is only extracted for
voltages from 0 ~ 1.8V and the rest (common-mode models) still have
tables ranging from -1.8V to +3.6V?
 
thanks,
Wei
 

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