US 11,721,393 B2
Duo-level word line driver
Po-Hao Lee, Hsinchu (TW); Chia-Fu Lee, Hsinchu (TW); and Yi-Chun Shih, Taipei (TW)
Assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu (TW)
Filed by Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed on Feb. 3, 2022, as Appl. No. 17/592,376.
Application 17/592,376 is a continuation of application No. 17/002,443, filed on Aug. 25, 2020, granted, now 11,264,093.
Prior Publication US 2022/0157377 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G11C 7/12 (2006.01); G11C 11/00 (2006.01); G11C 13/00 (2006.01)
CPC G11C 13/0028 (2013.01) 20 Claims
OG exemplary drawing
 
1. A circuit, comprising:
a first transistor and a second transistor cross-coupled with each other, wherein the first transistor and the second transistor are coupled to a power supply at their respective sources;
a third transistor connected to the second transistor at a first node;
a fourth transistor connected to the first transistor at a second node;
wherein the first through fourth transistors have a same conductive type; and
wherein the driver circuit is configured to provide, through the second transistor and the third transistor, an output voltage at a first level based on a first level of the power supply and at a second level based on a second level of the power supply, respectively.