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Product Detailed Parameters
- Description：IC GATE NAND 2CH 4-INP 14SO
- Series：74ALS
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Logic Type：NAND Gate
- Number of Circuits：2
- Number of Inputs：4
- Features：-
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：-
- Current - Output High, Low：400µA, 8mA
- Input Logic Level - Low：0.8V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：12.5ns @ 5V, 50pF
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Supplier Device Package：14-SO
- Package / Case：14-SOIC (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The SN74ALS20ANSR is a dual four-input positive-NAND gate from the Texas Instruments ALS logic family, housed in a 14-pin SOIC surface-mount package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of 0°C to +70°C. Key electrical characteristics include a propagation delay of 11 ns, a low-level output current capability of 400 µA, and a high-level output current of -8 mA.
Feature Summary
- Dual four-input positive-NAND logic function
- Schottky-clamped construction for high performance
- Surface-mount SOIC-14 packaging
Applications
- Digital logic circuit design
- Signal processing systems
- Microprocessor-based control units
Procurement Notes
Verify the component authenticity by checking the manufacturer marking against official datasheets. Confirm the specific suffix 'ANSR' corresponds to the SOIC-14 package and tape-and-reel delivery format. Ensure the device meets RoHS compliance requirements for your assembly process. Cross-reference the part number with authorized distributor catalogs to confirm current production status and availability.
Selection Notes
Select this component when a dual four-input NAND function is required in space-constrained designs. The ALS series offers improved speed-power product compared to standard TTL. Verify that the 11 ns propagation delay meets system timing constraints. Ensure the 4.5 V to 5.5 V supply voltage aligns with the target power rail. Consider the SOIC-14 footprint compatibility during PCB layout.
Part Context
This device belongs to the SN74ALS20A series, representing the Advanced Low-power Schottky (ALS) generation of logic ICs. It provides a balance of speed and power efficiency suitable for general-purpose digital applications. The SN74ALS20ANSR variant specifically denotes the surface-mount reel packaging option manufactured by Texas Instruments.
Replacement Considerations
Check for direct pin-compatible alternatives within the same ALS family or upgraded AS series if available. Verify functional equivalence for dual four-input NAND operations. Ensure replacement parts maintain compatible voltage ranges and package dimensions.
