The SN74LS74AN is a dual D flip-flop manufactured by Texas Instruments containing two independent positive-edge triggered D flip-flops with set and reset inputs.
74LS74A flip-flop IC utilizes the Schottky TTL circuitry to produce high-speed D-type flip-flops. Each flip-flop has individual clear and set inputs, and also complementary Q and Q`(bar) outputs.