Delta I Failure Detection Technique
Original Publication Date: 1983-Feb-01
Included in the Prior Art Database: 2005-Feb-06
When many drivers switch simultaneously, a noise pulse on the power supply propagates to quiet drivers and then through the module to receivers. This action can cause the false setting of latches if clock lines are open and if the noise pulse is large enough. This is called the delta-I problem. This article determines the number of inputs which will cause a certain number of drivers to switch simultaneously in a given logic network. If there are only a few drivers which switch together, then one can use faster drivers (i.e., increase dv/dt).