Patent Number: 7,042,247

Title: Programmable look-up tables with reduced leakage current

Abstract: The number of off and possibly leaking transistors in circuitry such as look-up table (LUT) circuitry is reduced by dividing the LUT or LUT-type circuitry into two separate or at least partly separate circuits. One of these circuits operates on first manifestations of the signals selectable by the circuitry. The other circuit operates on electrically different second manifestations of the selectable signals. Selections made by the two circuits are combined to produce an output of the circuitry.

Inventors: Pedersen; Bruce (Sunnyvale, CA)

Assignee: Altera Corporation

International Classification: H03K 19/173 (20060101)

Expiration Date: 5/09/02018