US 12,009,821 B2
Output driver and output buffer circuit including the same
Kyungsoo Lee, Seongnam-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 17, 2022, as Appl. No. 17/889,543.
Claims priority of application No. 10-2021-0157497 (KR), filed on Nov. 16, 2021; and application No. 10-2022-0012904 (KR), filed on Jan. 28, 2022.
Prior Publication US 2023/0155574 A1, May 18, 2023
Int. Cl. H03K 3/011 (2006.01); H03K 3/012 (2006.01); H03K 17/687 (2006.01)
CPC H03K 3/011 (2013.01) [H03K 3/012 (2013.01); H03K 17/6872 (2013.01); H03K 17/6874 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An output driver comprising:
a pull-up driver connected between an output power supply voltage and an output node, and configured to pull up a voltage at the output node based on a pull-up driving signal and a pull-up reference voltage, wherein the pull-up reference voltage is generated by a voltage regulator which operates based on the output power supply voltage and a ground voltage;
a pull-down driver connected between the output node and the ground voltage, and configured to pull down the voltage at the output node based on a pull-down driving signal and a pull-down reference voltage, wherein the pull-down reference voltage is generated by the voltage regulator; and
a reference voltage compensation circuit configured to perform a short operation during transitions of the pull-up driving signal and the pull-down driving signal, wherein the short operation comprises electrically connecting any one or any combination of the pull-up reference voltage to the ground voltage, and the pull-down reference voltage to the output power supply voltage.