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.

Date of Patent:
Jun. 29, 2021

Filed:

Sep. 03, 2019
Applicant:

SK Hynix Inc., Icheon-si, KR;

Inventors:

Gyu Tae Park, Icheon-si, KR;

Young Ouk Kim, Icheon-si, KR;

Assignee:

SK hynix Inc., Icheon-si, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/0233 (2006.01); H03K 5/135 (2006.01); G11C 7/22 (2006.01);
U.S. Cl.
CPC ...
H03K 3/0233 (2013.01); G11C 7/222 (2013.01); H03K 5/135 (2013.01);
Abstract

A latched comparator includes a first amplification circuit, a second amplification circuit and a latch circuit. The first amplification circuit changes voltage levels of first and second output nodes based on first and second input signals when an operation speed of a semiconductor apparatus is relatively slow. The second amplification circuit changes voltage levels of third and fourth output nodes based on the first and second input signals when the operation speed of the semiconductor apparatus is relatively fast. The latch circuit generates first and second latch signals based on the voltage levels of the first and second output nodes or based on the voltage levels of the third and fourth output nodes according to the operation speed of the semiconductor apparatus.


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