SN74F02NS Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74F02NS is a quad 2-input NOR gate IC from Texas Instruments in the fast F-series logic family. It provides four independent NOR gates with propagation delay of approximately 3.5 ns and operates from a 5V supply in a 14-pin SOIC package. Suited for high-speed combinational logic design in digital control and data processing systems.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SN74F02NS Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad 2-input NOR gates with approximately 3.5 ns propagation delay in the fast F-series logic family
- 5V supply operation compatible with TTL and CMOS logic levels for mixed-family system integration
- 14-pin SOIC package enabling compact PCB layout in high-speed digital designs
Applications
The SN74F02NS is used in high-speed digital combinational logic circuits where low propagation delay is required for fast signal processing and bus arbitration. Its quad NOR gate configuration supports address decoding, interrupt logic, and control signal generation in microprocessor-based designs. The F-series speed rating makes it well-suited for clock gating and glue logic in computing and communications equipment operating at 5V.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the F-series propagation delay of the SN74F02NS compare to standard TTL and HC-series NOR gates?
The SN74F02NS achieves a typical propagation delay of approximately 3.5 ns at 5V, significantly faster than the 74HC02 at 7 ns to 14 ns and standard 74LS02 at 10 ns. This 2x to 4x speed advantage is critical in high-speed address decoding, bus arbitration, and clock gating logic where setup and hold timing margins of a few nanoseconds determine whether a design runs at its target frequency.
For a 5V microprocessor system, how can the SN74F02NS quad NOR gates implement a 2-of-4 address decoder?
Two of the four NOR gates can combine active-low chip select signals from a 2-bit address bus to produce four mutually exclusive select outputs using DeMorgan equivalent logic. With 3.5 ns propagation delay, the decoder adds less than 10 ns to the address valid to chip select active path, comfortably meeting the 50 ns to 100 ns access window of typical 5V SRAM and peripheral devices in embedded control designs.
In a mixed-logic design combining 5V TTL and CMOS devices, how does the SN74F02NS interface electrically?
The SN74F02NS outputs meet TTL VOH of at least 2.7V and VOL below 0.5V at 5V supply, compatible with TTL-level inputs on 74HC, 74ACT, and standard LS-TTL parts without level shifters. Input thresholds accept standard TTL VIH of 2V minimum, allowing direct connection from 5V CMOS outputs driving logic high above 4.5V, making it a plug-in glue logic solution for 5V mixed-family boards.
When should a designer choose the 14-pin SOIC SN74F02NS over a 14-pin PDIP NOR gate for a new PCB layout?
The SOIC package measures approximately 8.7 mm x 3.9 mm compared to the 19 mm x 6.4 mm PDIP footprint, saving over 60% of board area while using the same 14-pin pinout. For automated SMT assembly lines, the SOIC reflow process is faster and lower cost than hand-insertion of through-hole PDIP parts, making SN74F02NS the preferred choice for medium to high production volumes and any design where PCB space is at a premium.
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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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