Interactive chip reference
74HC74 DIP-14 pinout
74HC74 14-pin DIP-14 pinout. Dual D-type positive-edge-triggered flip-flop with preset and clear
Pin reference
| Pin | Name | Function | Group |
|---|---|---|---|
| 1 | /CLR1 | Asynchronous clear — flip-flop 1 (active LOW) | control |
| 2 | D1 | Data input — flip-flop 1 | input |
| 3 | CLK1 | Clock input — flip-flop 1 (rising edge) | clock |
| 4 | /PR1 | Asynchronous preset — flip-flop 1 (active LOW) | control |
| 5 | Q1 | Output Q — flip-flop 1 | output |
| 6 | /Q1 | Complementary output — flip-flop 1 | output |
| 7 | GND | Ground reference | ground |
| 8 | /Q2 | Complementary output — flip-flop 2 | output |
| 9 | Q2 | Output Q — flip-flop 2 | output |
| 10 | /PR2 | Asynchronous preset — flip-flop 2 (active LOW) | control |
| 11 | CLK2 | Clock input — flip-flop 2 (rising edge) | clock |
| 12 | D2 | Data input — flip-flop 2 | input |
| 13 | /CLR2 | Asynchronous clear — flip-flop 2 (active LOW) | control |
| 14 | VCC | Supply voltage (2V–6V) | power |
View the interactive 74HC74 package diagram and labeled pin details on WhichPin.