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74HC74D Dual D-Type Flip-Flop Logic IC SOP-14 – Pack of 10
74HC74D Dual D-Type Flip-Flop Logic IC SOP-14 – Pack of 10
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74HC74D Dual D-Type Flip-Flop — SOP-14 SMD, Positive Edge-Triggered, 2–6V (10-Pack)
The 74HC74D contains two independent positive edge-triggered D-type flip-flops in a SOP-14 SMD package. Each flip-flop has independent data (D), clock (CP), set (̅S̅D̅), and reset (̅R̅D̅) inputs, making it the fundamental building block for digital registers, frequency dividers, synchronizers, and sequential logic state machines in both 3.3V and 5V CMOS systems.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOP-14 (SMD) |
| Flip-Flop Type | Positive edge-triggered D-type |
| Flip-Flops per IC | 2 (independent) |
| Supply Voltage | 2–6V |
| Output Current | ±25mA per pin |
| Propagation Delay (tpd) | 7ns typ. (VCC=5V) |
| Max Clock Frequency | ~100MHz (VCC=5V) |
| Operating Temperature | -40°C to +125°C |
| Quantity | 10 pieces |
Why Choose 74HC74D?
- Dual independent flip-flops — two complete D-FFs in one package, each with set/reset
- Positive edge-triggered — captures data on rising clock edge for predictable synchronous behavior
- 100MHz max clock — suitable for high-speed digital logic and frequency division up to 50MHz output
- SOP-14 SMD — compact footprint for PCB designs
- 10-pack value — sufficient for digital logic lab exercises and multiple circuit builds
Compatible With
- Arduino, ESP32, STM32 (3.3V/5V logic)
- Standard SOP-14 PCB footprint
- Pin-compatible: SN74HC74 (TI), MC74HC74 (ON Semi), HEF4013 (similar function, different pinout)
- DIP-14 equivalent: 74HC74N (same function, through-hole)
Frequently Asked Questions
Q: How do I use 74HC74 as a frequency divider?
A: Connect the ̅Q̅ (inverted output) back to the D input, and apply the input clock to CP. The Q output will toggle on every rising clock edge, producing a divide-by-2 output. Chain two flip-flops for divide-by-4.
Q: What is the difference between 74HC74 and 74HC74D?
A: The “D” suffix denotes the SOP-14 SMD package. 74HC74N is the DIP-14 through-hole version. Both are electrically identical with the same pinout (adapted for package type).
Q: Can 74HC74 be used as a data synchronizer between two clock domains?
A: Yes — this is a classic use case. Connect the asynchronous input to D and the destination clock to CP. The output Q will be synchronized to the destination clock after one clock cycle. Note: metastability risk exists; for critical designs use a dedicated synchronizer cell or double-register the signal.
Package Contents
- 10× 74HC74D Dual D-Type Flip-Flop IC (SOP-14)
