The 7474 Dual D-Type Flip-Flop IC (DIP) is a TTL 74xx-series device containing two independent edge-triggered D-type flip-flops with asynchronous preset (PR) and clear (CLR) inputs and complementary Q / Q’ outputs. Each flip-flop captures and stores the logic level present at D on the rising edge of the clock, then holds that state until the next clock transition—making the 7474 ideal for synchronized data storage and sequential logic.
Key Features:
- Two independent edge-triggered D flip-flops in a single IC (dual configuration).
- Asynchronous Preset (PR) and Clear (CLR) inputs for forced set/reset.
- Complementary outputs Q and Q’ (active and inverted outputs).
- Standard TTL operation at +5V (typical supply).
- Fast switching suitable for clocked digital systems (low propagation delay).
- 14-pin DIP package — breadboard and PCB friendly.
- Easy interfacing with other 74xx logic family devices.
Applications:
- Data storage elements and registers.
- Frequency division and counters (divide-by-2 and cascaded configurations).
- Shift registers and serial-to-parallel/parallel-to-serial stages.
- State machines, sequencing and synchronized control logic.
- Debounce, edge detection and clocked data transfer between domains.
- Microcontroller/FPGA interfacing in educational and prototyping projects.
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