SN74F74NS Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74F74NS is a dual D-type positive-edge-triggered flip-flop from Texas Instruments in the 74F fast TTL family, with preset and clear, operating at 5 V in a 14-pin SOIC package.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SN74F74NS Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual D-type positive-edge-triggered flip-flops with independent preset and clear for versatile sequential logic design
- 74F (Fast Schottky TTL) family with propagation delay under 5 ns enabling high-speed digital pipeline registers
- 5 V TTL-compatible operation with totem-pole outputs for direct interfacing with legacy 74-series logic families
- 14-pin SOIC (SN package) offering smaller footprint than equivalent DIP while maintaining standard 74-series pinout
Applications
SN74F74NS is used in high-speed digital systems requiring fast edge-triggered data storage, such as pipeline registers, synchronous counters, and clock domain crossing circuits in FPGA board support logic and communications equipment. Its 74F-series timing characteristics make it suitable for bus interface designs operating at clock rates above 50 MHz where standard 74LS or 74HCT flip-flops lack sufficient speed.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74F74NS:
D Flip-Flop, F/FAST Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, TTL, PDSO14
D Flip-Flop, F/FAST Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, TTL, PDSO14
Frequently Asked Questions
How fast is the SN74F74NS compared to 74LS74 for high-speed pipeline registers?
SN74F74NS belongs to the 74F (Fast Schottky) family with typical propagation delay of approximately 4–5 ns from clock to output, roughly 3× faster than 74LS74 at about 13 ns. This speed advantage benefits designs clocked above 50 MHz where LS-series timing is insufficient.
What supply voltage and logic levels does SN74F74NS require for board integration?
SN74F74NS operates from a 5 V supply with TTL-compatible input thresholds (VIH ≥ 2 V, VIL ≤ 0.8 V) and totem-pole outputs, making it directly interoperable with other 74-series TTL and Schottky logic devices on a 5 V digital board.
Does SN74F74NS include asynchronous preset and clear and what design advantage does this provide?
Yes, each of the 2 flip-flops has an active-low asynchronous preset and clear input that operates independently of the clock. This allows immediate initialization of registers to a known state at power-on or on a fault condition without waiting for the next clock edge.
How does the 14-pin SOIC package of SN74F74NS compare to the equivalent DIP for compact digital boards?
The 14-pin SOIC uses 1.27 mm pin pitch and occupies roughly 40% less PCB area than a 14-pin DIP at 2.54 mm pitch. This size reduction allows denser logic placement on boards where multiple 74-series devices are used alongside larger ICs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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