Integrated circuits

Details Integrated circuits Integrated circuits

H - Electricity

01

L

356/132, 328/150

H01L 27/10 (2006.01) H01L 27/088 (2006.01) H01L 27/112 (2006.01) H01L 29/78 (2006.01) H03K 3/353 (2006.01) H03K 19/096 (2006.01)

Patent

CA 1112306

ABSTRACT An integrated circuit for the generation of logic combinations of applied logic input signal comprising a semi- conductor body with an array of insulated gate field effect transistors formed in a part, mainly of one conductivity type, of the semiconductor body. These transistors have gate elec- trodes self-registered with source and drain electrode regions and are formed at crossings of a plurality of parallel first conductive tracks, which comprise the transistor gate electrodes and a plurality of parallel strip-shaped surface regions of opposite conductivity which adjoin a surface of the body. The surface regions comprising the source and drain electrode regions. A first group of transistors are of a first form hav- ing a first threshold voltage and a second group of transistors are of a second form having a second threshold voltage. The logic input signals are to be applied to the gate electrodes of one of the two groups and the logic combination to be gen- erated is determined with the aid of the crossings and form of transistor present at these crossings and with the aid of the interconnection of transistors of this one group via the op- posite conductivity type strip-shape surface regions. The cir- cuit is characterized in that the array is an irregular array and the logic combination is additional predetermined with the aid of further interconnections, formed by branching of the strip-shaped regions, within the array.

294840

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