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Product Detailed Parameters
- Description：IC GATE NAND 2CH 4-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 SN74AS20NS is a dual 4-input positive-NAND gate from Texas Instruments' AS logic series. It operates on a 4.5 V to 5.5 V supply and features bipolar inputs with push-pull outputs. Key electrical parameters include a propagation delay of 6.2 ns, low-level output current of 64 mA, and high-level output current of -15 mA. The device functions within a commercial temperature range of 0°C to +70°C and is housed in a 14-SOIC surface-mount package.
Feature Summary
- High-speed operation with 6.2 ns propagation delay
- Robust bipolar input structure for noise immunity
- Push-pull output stage providing strong drive capability
Applications
- Digital logic circuit design
- Signal conditioning
- Building block for larger digital systems
Procurement Notes
Verify the specific suffix 'NS' against the manufacturer's official ordering guide to confirm the package type and tape-and-reel configuration. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the full part number with the latest datasheet revision to confirm pinout compatibility and electrical specifications before integration.
Selection Notes
Select this component when high-speed NAND logic is required in a compact surface-mount form factor. The AS series offers superior speed compared to standard or ALS variants. Verify that the 64 mA sink current capability aligns with the load requirements of the connected circuitry. Ensure the SOIC-14 footprint matches the PCB layout constraints.
Part Context
This device belongs to the SN74ASxxA family, representing Texas Instruments' Advanced Schottky logic technology. It provides faster switching speeds than the SN74ALS20 while maintaining similar voltage ranges. The SN74AS20NS variant specifically denotes the small-outline integrated circuit package version suitable for automated surface-mount assembly processes.
Replacement Considerations
Compatible substitutes include SN74AS20N (PDIP) and SN74AS20AN (SOIC). Verify pinout compatibility and ensure the replacement maintains the 6.2 ns propagation delay specification.
