公开(公告)号：US20220084600A1

公开(公告)日：2022-03-17

申请号：US17220368

申请日：2021-04-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sooyeol YANG ,  Hyunggon KIM ,  Youngsun SONG

IPC: G11C16/12 ,  H01L27/11573 ,  H01L27/11582

Abstract: A negative level shifter includes a shifting circuit and a latch circuit. The shifting circuit shifts levels of a first input signal and a second input signal to provide a first output signal and a second output signal having complementary levels at a first output node and a second output node, respectively, using low voltage transistors and high voltage transistors having different characteristics. The latch circuit, connected to the shifting circuit at the first output node and the second output node, latches the first output signal and the second output signal, receives a negative voltage having a level smaller than a ground voltage, and drives the second output signal and the first output signal complementarily to either a level of a power supply voltage or a level of the negative voltage, based on voltage levels at the first output node and the second output node, respectively.