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:
Mar. 07, 2023
Filed:
Mar. 22, 2021
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Bo-Ting Chen, Fengyuan, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Abstract
A protection cell for a cell library. The protection cell defines a protection circuit for an IC having a driving device with a first supply voltage Vddand an output, and a driven device having an input and a second supply voltage Vdd. The protection circuit includes a first device from the group consisting of a P-diode and a gate-Vdd PMOS. The first device is coupled between a first power bus connected to Vddand the input of the driven device. The input of the driven device is coupled by way of a resistor to the output of the driving device. A second device corresponding to the first device is provided, from the group consisting of an N-diode and a grounded gate NMOS. The second device is coupled between the input of the driven device and a ground bus.