Hi All SI Friends: I have a doubt about rising waveform or falling waveform in the driver end. We all know that there are 4 V-T tables for CMOS buffer, pull up turn on/off V-T curves and pull down turn on/off V-T curves. When these 4 sets table put into simulator, how simulator create a complete waveform? Some books said exact waveform is created from 4 tables, but how? anyone knows more detail? Any informations are highly appreciated! Jack ------------------------------------------------------------------ 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