In a message dated 10/13/2003 7:32:48 PM Pacific Standard Time, mchin@xxxxxxxxx writes: "Given that we have to use broadside coupling routing to exit the pin array, is it better to continue this broadside coupling, or is it better to switch to the coplanar route when have a chance at a cost of an VIA ? To put some limits on the application, lets assume that this is for a 622MHz LVDS, running 5" to the destination ASIC." Given that you have already provided appropriate planar spacing to achieve the desired impedance, continue the BC pairs to their destinations (assuming no other overriding considerations). Mike Michael L. Conn Owner/Principal Consultant Mikon Consulting *** Serving Your Needs with Technical Excellence *** ------------------------------------------------------------------ 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