It is based on the assumption that it is a CMOS part, and timing is the limiting factor. So the worst case is the set of conditions that will give the longest propagation delay, and best case the set of conditions that will give the shortest propagation delay. "Slow" and "fast" or "strong" and "weak" may be less ambiguous. On Sun, 2003-04-06 at 08:06, Yoni Tzafrir wrote: > > hi, > some of the spice models, are suppose to run in various conditions. the > vendor of the models call those conditions: > Worst Case - when specifying high temperature, and low Vdd voltages > Best Case - when specifying low temperature, and high Vdd voltages > > can someone explain why those conditions are called Worst Case, or Best > Case? > Yonatan (Yoni) Tzafrir > *Tel: (972) - 3 - 7552300 (T/L: 351) > *Fax: (972) - 3 - 6177130 > *Mobile: (972) -54- 459469 > *E-mail: <mailto:yonitz@xxxxxxxxxxxxx> > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > -- ============================================================================= Mike Mayer mwmayer@xxxxxxx ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu