Flip-flops and integrated circuits including the same

Abstract

A flip-flop includes a first precharge circuit, a first discharge circuit, a first inverter, a second discharge circuit, a second precharge circuit, a third discharge circuit, and a switching prevention circuit. The first precharge circuit selectively charges a first node based on a data input signal and a clock signal. The first discharge circuit selectively discharges the first node based on the data input signal. The first inverter outputs a first inverted signal by inverting a first signal of the first node. The second discharge circuit selectively discharges the second node based on the clock signal. The third discharge circuit selectively discharges the fourth node based on the clock signal, the first inverted signal and the second signal. The switching prevention circuit prevents a switching of a voltage level of the second node based on the first signal, due to a toggling of the clock signal.