Integrated circuit including a combined logic cell

Abstract

An integrated circuit, and method of forming the same. The integrated circuit includes standard logic cells and a combined logic cell over a semiconductor substrate. Each standard logic cell includes a standard height, a width that is an integer multiple of a unit width, first and second power rails, and at least one transistor and interconnections configured to implement a logic function that produces a single logic output. The combined logic cell includes the standard height, a width that is an integer multiple of the unit width, the first and second power rails, and at least two transistors and interconnections configured to implement a first logic function and a second logic function. The first and second logic functions produce first and second logic outputs, respectively. The interconnections are configured to direct the first logic output and the second logic output to destinations outside the combined logic cell.