Patent ID: 9035688
Filing Date: 2015-05-19
Classification: H03K

Abstract:
1. A single input level shifter comprising: an input unit applying a power voltage to a first node in response to an input signal and applying the input signal to a second node in response to a reference signal; a bootstrapping unit applying the power voltage to the second node according to a voltage level of the first node; and an output unit applying the input signal to an output terminal in response to the reference signal and applying the power voltage to the output terminal according to the voltage level of the first node, wherein the bootstrapping unit comprises a capacitor between the first and second nodes, and when the input signal is shifted from a first voltage level to a second voltage level, the bootstrapping unit raises the voltage level of the first node to a level higher than the power voltage; and wherein the first voltage level is lower than the second voltage level, and the second voltage level is higher than the reference signal and lower than the power voltage.