Lattice Semiconductor Corporation

Thomas R Gustafson

John Schadt

Steven J Fong

Shawn Murray

Luan Phoc Chau

Two (or more) different, but complementary, families of integrated circuits having the same layout are developed simultaneously where the different families are achieved by changing one or more design parameters of transistors used to implement the integrated circuits. For example, a low-power (but low-speed) family of one or more ICs (e.g., for handheld applications) can be achieved by designing at least some transistors with relatively high threshold-voltage (Vt) levels, while a different, but complementary, high-speed (but high-power) family of one or more ICs (e.g., for server applications) can be achieved by designing corresponding transistors with relatively low Vt levels. In this way, the two families can share in common all but a very few masks used to fabricate the ICs of the different families.

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Banks, OR, United States of America

Thomas R Gustafson