datasheets 74ls74 free download

File name 74ls74.pdf

D Flip-Flops with Preset Clear and Complementary Outputs 54LS74 DM54LS74A DM74LS74A Dual Positive-Edge-Triggered June 1989 54LS74 DM54LS74A DM74LS74A Dual Positive-Edge-Triggered D Flip-Flops with Preset Clear and Complementary Outputs General Description This device contains two independent positive-edge-trig- violated A low logic level on the preset or clear inputs will gered D flip-flops with complementary outputs The informa- set or reset the outputs regardless of the logic levels of the tion on the D input is accepted by the flip-flops on the posi- other inputs tive going edge of the clock pulse The triggering occurs at a voltage level and is not directly related to the transition time Features of the rising edge of the clock The data on the D input may Y Alternate military aerospace device (54LS74) is avail- be changed while the clock is low or high without affecting able Contact a National Semiconductor Sales Office the outputs as long as the data setup and hold times are not Distributor for specifications Connection Diagram Dual-In-Line Package TL F 6373