Hi, All. How to determine the buffer delay of Open Drain pin? A PCB Bridge chip, w83c553f in Winbond has this kind of pin, But the pin doesn't have pull-up data in the IBIS file, it is not able to measure the buffer delay timing in SigXp. Thanks in advance. Best Regards YS (Youn-Sook) Shin ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org 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