74ABTH16821A 20-bit bus-interface D-type flip-flop; positive-edge trigger 3-State
74ABTH16821ADGG 20-bit bus-interface D-type flip-flop; positive-edge trigger 3-State
74ABTH16821ADL 20-bit bus-interface D-type flip-flop; positive-edge trigger 3-State
74ABTH16821ADL-T 20-Bit D-Type Flip-Flop