Samsung Electronics Co., Ltd.

Wookwan Lee

Deokgi Lee

Hyosang Youn

Hongjin Cheon

Youngkyun Park

An input buffer circuit includes a low voltage generator, a first hysteresis buffer and a first dual-supply level shifter. The low voltage generator is connected to a first power supply voltage having a first voltage level, generates a mirrored current based on the first power supply voltage and generates a second power supply voltage having a second voltage level smaller than the first voltage level. The second power supply voltage is independent from a variation of the first power supply voltage. The first hysteresis buffer operates based on the second power supply voltage and generates a first inverted reset signal having hysteresis based on an inverted reset signal. The first dual-supply level shifter operates based on the first and second power supply voltages and generates a second inverted reset signal by shifting the first inverted reset signal from the second voltage level to the first voltage level.

Growing community of inventors

Suwon-si, South Korea

Wookwan Lee