74v1g79 is a high-speed cmos single-triggered d-type flip-flop, which operates from 2v to 5.5v and is ideal for portable applications. The flip-flop is controlled by a clock input, and the Q output is set to the logic state that was set up at the D input on the positive transition of the clock. Data at the D input can be changed without affecting the level at the output following the hold time interval. The device has input power-down protection and input static discharge protection, and can be used in 5v to 3v systems.