The 7474 is a 14-pin logic IC with two independent positive-edge-triggered D-type flip-flops, each with complementary Q and Q-not outputs. Data on the D input is captured on the rising clock edge. Active-low preset and clear inputs set or reset the outputs regardless of the other inputs.
Key Features
- Two independent D-type flip-flops
- Positive-edge triggered
- Complementary outputs
- Active-low preset and clear inputs
- Operating temperature 0°C to +70°C
Specifications
| Part number | 7474 |
|---|---|
| Function | Dual D-type flip-flop with preset and clear |
| Pins | 14 |
| Supply voltage (as listed) | 7V |
| Input voltage (as listed) | 7V |
| Operating temperature | 0°C to +70°C |
| Storage temperature | −65°C to +150°C |
| SKU | 107474 |
What's Included
- 1 x 7474 IC
Ideal For
Digital logic labs, frequency dividers, registers and debouncing circuits.
Frequently Asked Questions
What is edge triggering?
The flip-flop reads its D input only at the instant the clock goes from LOW to HIGH, so D can change at other times.
How do preset and clear work?
Pulling preset LOW forces Q HIGH; pulling clear LOW forces Q LOW, regardless of the clock.