US 7,598,774 B2
Reduced power consumption limited-switch dynamic logic (LSDL) circuit
Wendy Ann Belluomini, Austin, Tex. (US); and Aniket Mukul Saha, Austin, Tex. (US)
Assigned to International Business Machines Corporation, Armonk, N.Y. (US)
Filed on Jun. 25, 2008, as Appl. No. 12/145,715.
Application 12/145715 is a continuation of application No. 11/168691, filed on Jun. 28, 2005, granted, now 7,411,425.
Prior Publication US 2008/0284469 A1, Nov. 20, 2008
This patent is subject to a terminal disclaimer.
Int. Cl. H03K 19/20 (2006.01); H03K 19/094 (2006.01); H03K 3/356 (2006.01)
U.S. Cl. 326—121  [326/95; 327/211] 11 Claims
OG exemplary drawing
 
1. An integrated circuit comprising:
a plurality of dynamic logic circuits each having a clock input for controlling evaluation and pre-charging of a summing node and a plurality of logic inputs for determining whether or not to said evaluation in response to said clock changes a logical state of said summing node; and
a local clock buffer having a clock output connected to said clock input of each of said plurality of dynamic logic circuits, and wherein said local clock buffer includes a reduced-swing clock generator circuit having an output connected for generating a reduced-swing clock signal having an evaluate phase voltage state substantially differing from a voltage of a first power supply rail of said plurality of dynamic circuits and a pre-charge voltage state substantially equal to a voltage of a second power supply rail of said plurality of dynamic circuits.