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. 05, 1988
Filed:
Feb. 04, 1987
Che-Tsung Chen, South Whitehall Township, Lehigh County, PA (US);
Kevin D Kolwicz, Upper Milford Township, Lehigh County, PA (US);
Chin-Jen Lin, South Whitehall Township, Lehigh County, PA (US);
Won J Yoon, Lower Macungie Township, Lehigh County, PA (US);
American Telephone and Telegraph Company, AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
Integrated circuits having a large number of transmission gate logic stages have been found to draw a large current surge on power-up. This is due to the floating input node of complementary inverters causing current to flow briefly before clock pulses arrive. The present invention provides a DC voltage on the gates of the pass transistors until the system clock pulses arrive, thereby eliminating the floating node. An optional periodic window may be generated to examine the system clock after power-up, to detect a loss of clock condition.