The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 1986
Filed:
Sep. 09, 1983
James M Early, Palo Alto, CA (US);
Fairchild Semiconductor Corporation, Cupertino, CA (US);
Abstract
The area circumscribed by the current path on an integrated circuit chip is diminished, to thereby reduce the inductance of the chip and the likelihood of inductively generated errors, by disposing the bonding pads, through which the current source and current sink are respectively connected to logic gates, physically adjacent to one another. A further reduction in the area of the current loop is obtained by locating power and ground busses adjacent to one another relative to the logic gates. These two busses can be superposed one over the other on different metallic layers of the chip, so that the space between them is only the thickness of the isolation layer which separates the two metallic layers. The distribution of voltage to the logic gates is made uniform by varying the widths of the busses along their lengths in accordance with the currents they carry, and by ensuring that the total length of the current path for the gates is the same for every gate.