A flip-flop is provided having a data gate circuit means (1) for receiving input data and generating therefrom first and second complementary internal data signals representative of the input data. A master circuit means (2) is coupled to the data gate circuit means for receiving a clock pulse and for latching the internal data signals during a predetermined portion of the clock pulse. A slave circuit means (3) is coupled to the master circuit means for storing the internal data signals. A reset means (23) supplies a synchronous reset signal to the master circuit means for resetting the first and second complementary internal data signals on the occurrence of the next clock pulse.