Patent ID: 7784012
Filing Date: 2010-08-24
Classification: G06F

Abstract:
1. A standard cell library comprising: a first design for physical implementation of a first logic circuit for performing a function, wherein the first design comprises a first set of cells including mixed threshold voltage cells, each mixed threshold voltage cell including a first threshold voltage device having a first threshold voltage and a second threshold voltage device having a second threshold voltage, the first threshold voltage being different from the second threshold voltage; and a second design for physical implementation of a second logic circuit for performing the function, wherein the second design comprises a second set of cells including only non-mixed threshold voltage cells, each non-mixed threshold voltage cell including threshold voltage devices having a same threshold voltage, wherein the physical implementation of the first logic circuit has substantially a same footprint as the physical implementation of the second logic circuit such that a circuit designer uses the first design and the second design interchangeably in an integrated circuit design without needing to alter other circuits in the integrated circuit design.