A stacked inverter delay chain. The stacked inverter delay chain includes a plurality of stacked inverter delay elements. A switch circuit is included and is coupled to the stacked inverter delay elements and configured to select at least one of the plurality of stacked inverter delay elements to create...http://www.google.de/patents/US7592842?utm_source=gb-gplus-sharePatent US7592842 - Configurable delay chain with stacked inverter delay elements
