Abstract: A method includes positioning a first active region adjacent to a pair of second active regions in an initial integrated circuit (IC) layout diagram of an initial cell, to align side edges of the first active region and corresponding side edges of each second active region of the pair of second active regions along a cell height direction. The method further includes arranging at least one first fin feature in the first active region, to obtain a modified cell having a modified IC layout diagram. The side edges of the first active region and the corresponding side edges of each second active region extend along the cell height direction. A height dimension of the first active region in the cell height direction is less than half of a height dimension of each second active region of the pair of second active regions in the cell height direction. At least one of the positioning the first active region or the arranging the at least one first fin feature is executed by a processor.

Abstract: A multiplexer circuit includes first and second fins each extending in an X-axis direction. First, second, third and fourth gates extend in a Y-axis direction perpendicular to the X-axis direction and contact the first and second fins. The first, second, third and fourth gates are configured to receive first, second, third and fourth data signals, respectively. Fifth, sixth, seventh and eighth gates extend in the Y-axis direction and contact the first and second fins, the fifth, sixth, seventh and eighth gates, and are configured to receive the first, second, third and fourth select signals, respectively. An input logic circuit is configured to provide an output at an intermediate node. A ninth gate extends in the Y-axis direction and contacts the first and second fins. An output logic circuit is configured to provide a selected one of the first, second, third and fourth data signals at an output terminal.

Abstract: An integrated circuit includes a first cell and a second cell. The first cell with a first cell height along a first direction includes a first active region and a second active region that extend in a second direction different from the first direction. The first active region overlaps the second active region in a layout view. The second cell with a second cell height includes a first plurality of active regions and a second plurality of active regions. The first plurality of active regions and the second plurality of active regions extend in the second direction and the first plurality of active regions overlap the second plurality of active regions, respectively, in the layout view. The first cell abuts the second cell, and the first active region is aligned with one of the first plurality of active regions in the layout view.

Abstract: A method includes positioning a first active region adjacent to a pair of second active regions in an initial integrated circuit (IC) layout diagram of an initial cell, to align side edges of the first active region and corresponding side edges of each second active region of the pair of second active regions along a cell height direction. The method further includes arranging at least one first fin feature in the first active region, to obtain a modified cell having a modified IC layout diagram. The side edges of the first active region and the corresponding side edges of each second active region extend along the cell height direction. A height dimension of the first active region in the cell height direction is less than half of a height dimension of each second active region of the pair of second active regions in the cell height direction. At least one of the positioning the first active region or the arranging the at least one first fin feature is executed by a processor.