SN54ALS74A, SN54AS74A, SN74ALS74A, SN74AS74A DUAL .
Texas Instruments
SN74ALS74A - Dual Positive-Edge-Triggered D-Type Flip-Flops
SN54ALS74A, SN54AS74A, SN74ALS74A, SN74AS74A DUAL POSITIVEĆEDGEĆTRIGGERED DĆTYPE FLIPĆFLOPS WITH CLEAR AND PRESET SDAS143C − APRIL 1982 − REVISED AUGU.
