Patent ID: 6236258
Filing Date: 2001-05-22
Classification: H01L

Abstract:
A parallel connected arrangement of enhanced drivability driver transistors for selectively driving a voltage on a single output line between at least two states, comprising:a physically uninterrupted, active semiconductor area of a substrate;a plurality of conductor patterns laid out upon said active semiconductor area, each said conductor pattern including a plurality of ring-shaped portions, said ring-shaped portions forming gate conductors of insulated gate field effect transistors (IGFETs) coupled to receive a selection signal, said ring-shaped portions enclosing drain diffusion contacts connected together in parallel, said IGFETS further including source diffusion contacts to said active area outside said ring-shaped portions, said source diffusion contacts being connected together in parallel, wherein either of said drain diffusion contacts or said source diffusion contacts are conductively coupled to a common potential and the other of said drain diffusion contacts or said source diffusion contacts are conductively coupled to selectively drive a voltage on an output line between at least two states according to the state of said selection signal.