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Product Detailed Parameters
- Description：IC GATE NOR 4CH 2-INP 14-SO
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Number of Circuits：-
- Number of Inputs：-
- Features：-
- Voltage - Supply：-
- Current - Quiescent (Max)：-
- Current - Output High, Low：-
- Input Logic Level - Low：-
- Input Logic Level - High：-
- Max Propagation Delay @ V, Max CL：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Grade：-
- Qualification：-
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Overview
The SN74AS02NS is a quadruple 2-input positive-NOR gate from the Texas Instruments SN74AS series. It operates within a supply voltage range of 4.5 V to 5.5 V and features a 14-SOIC package with surface-mount installation. The device provides a low-level output current of 20 mA and a high-level output current of -2 mA. Propagation delay is specified at 4.5 ns under typical conditions. It supports an operating temperature range from 0°C to +70°C.
Feature Summary
- High-speed logic performance with 4.5 ns propagation delay
- Quadruple 2-input NOR logic functionality
- Strong push-pull output drive capability
Applications
- High-speed digital signal processing circuits
- Memory address decoding systems
- Control logic in industrial automation equipment
Procurement Notes
Verify the exact suffix against official manufacturer documentation, as variations may indicate different packaging or environmental ratings. Confirm RoHS compliance status through the specific datasheet for this part number. Ensure the ordering code matches the required SOIC-14 package type and commercial temperature grade specifications before finalizing procurement.
Selection Notes
Select this component when high switching speed is critical compared to standard ALS logic families. The AS series offers significantly faster propagation delays while maintaining compatible pinouts with legacy designs. Evaluate the 20 mA output drive strength against load requirements to ensure adequate noise margins in high-frequency applications.
Part Context
This device belongs to the SN74AS (Advanced Schottky) family, designed for high-speed applications requiring fast switching times. It shares functional compatibility with other 74-series logic gates but delivers superior performance metrics. The SN74AS02 variant specifically implements NOR logic functions within a compact surface-mount package suitable for dense PCB layouts.
Replacement Considerations
SN74ALS02NS: Offers similar functionality with lower power consumption but slower propagation delay. SN74S02N: Provides comparable speed in a through-hole package. SN74LS02DR: Suitable for cost-sensitive applications where speed is less critical.
