Patent ID: 7269028
Filing Date: 2007-09-11
Classification: H05K,Y02P

Abstract:
1. The apparatus for a signal-triggered digital circuit, said apparatus comprising: a signal source for generating a digital signal; an input receiver, said input receiver receiving said digital signal for said digital circuit and being responsive to triggering induced by said digital signal; a conducting interface; a conducting signal path, said conducting signal path being electrically connected to said conducting interface at a corner thereof, said conducting interface being electrically connected to said input receiver, said signal path carrying said digital signal thereover, said conducting signal path having a length which is at least ⅙th of a transition electrical length of said digital signal carried thereover, said transition electrical length constituting a transient time of said digital signal multiplied by a propagation speed of said digital signal over said conducting signal path, and wherein said transient time of the said digital signal is selected from a group comprising a rise time thereof and a fall time thereof; and wherein said conducting interface is substantially rectangular in planar view and said conducting signal path connected thereto as aforesaid has a longitudinal centerline axis which forms an angle in a range of 110 to 160 degrees with respect to a side of said conducting interface to which said conducting signal path is connected to thereby produce a reduced reflection of said digital signal at said connection between said conducting interface and said conducting signal path when compared to a connection wherein said angle has a value of 90 degrees.