DM7474N

DM7474 Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs September 1986 Revised July 2001 DM7474 Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs General Description This device contains two independent positive-edge-triggered D-type flip-flops with complementary outputs. The information on the D input is accepted by the flip-flops on the positive going edge of the clock pulse. The triggering occurs at a voltage level and is not directly related to the transition time of the rising edge of the clock. The data on the D input may be changed while the clock is LOW or HIGH without affecting the outputs as long as the data setup and hold times are not violated. A LOW logic level on the preset or clear inputs will set or reset the outputs regardless of the logic levels of the other inputs. Ordering Code: Order Number Package Number Package Description DM7474M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow DM7474N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Inputs Outputs PR CLR CLK D Q Q L H X X H L H L X X L H L L X X H H (Note 1) (Note 1) H H ↑ H H L H H ↑ L L H H H L X Q0 Q0 H = HIGH Logic Level X = Either LOW or HIGH Logic Level L ...