Oliver, what SPICE program are you using? The following is a link that may be of help: http://duncanamps.simplenet.com/spice.html - Tom At 11:57 AM 3/22/98 -0800, you wrote: >I'm playing around with some circuits, and planned on using a 4066 ic, but >realized there was no spice model in my simulator program. Does anyone have >or know of a goodsite to get this and other spice models? > >thanx > >OP > >