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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 SN74ALS20ANS is a dual 4-input positive-NAND gate from the Texas Instruments ALS logic family. It operates within a supply voltage range of 4.5 V to 5.5 V and features bipolar input technology with push-pull outputs. The device provides a low-level output current of 8 mA and a high-level output current of -400 µA. Propagation delay is typically 11 ns, with a maximum of 12.5 ns at 5 V and 50 pF load. It functions in temperatures from 0°C to +70°C and is housed in a 14-pin SOIC package.
Feature Summary
- Dual independent 4-input NAND logic gates
- Push-pull output configuration for strong drive capability
- Bipolar input technology ensuring fast switching speeds
- Standard TTL-compatible logic levels
Applications
- Digital signal processing logic circuits
- Microprocessor system address decoding
- General-purpose combinational logic design
- Industrial control logic interfaces
Procurement Notes
Verify the suffix 'N' indicates the SOIC-14 package variant. Confirm RoHS compliance status via official documentation. Ensure ordering specifications match the required surface-mount format. Check for specific tape-and-reel or tube packaging options if applicable to production needs.
Selection Notes
Select this component for applications requiring moderate speed and standard drive strength. The ALS series offers a balance between power consumption and performance. Verify that the 4-input requirement matches the circuit design. Consider thermal dissipation limits within the SOIC package for dense layouts.
Part Context
This part belongs to the SN74ALS20A series, which includes variants like SN74ALS20AN (PDIP) and SN74ALS20AD (SOIC). The 'S' suffix specifically denotes the small-outline integrated circuit package. It is part of the broader 74ALS family designed for improved speed over standard LS logic.
Replacement Considerations
SN74ALS20AD is a direct pin-compatible alternative in the same SOIC package family. SN74ALS20AN serves as a through-hole equivalent. Cross-family replacements require careful evaluation of propagation delay and drive current differences.
