SN74AS20DRG4

Overview

The SN74AS20DRG4 is a dual 4-input positive-NAND gate integrated circuit manufactured by Texas Instruments. It belongs to the 74AS logic series, utilizing advanced Schottky technology for high-speed operation. The device features a 14-pin SOIC surface-mount package and operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical characteristics include a propagation delay of 5 ns and an output current capability of 20 mA. It supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Dual 4-input NAND logic function
• Advanced Schottky (AS) technology for high speed
• Surface-mount SOIC-14 packaging

Applications

• Digital logic systems requiring fast switching speeds
• High-performance computing circuits
• Industrial control logic interfaces

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status according to the manufacturer's latest documentation. Confirm the package type matches the required PCB footprint. Ensure the operating voltage requirements align with the 4.5 V to 5.5 V specification before integration into the design.

Selection Notes

Select this component when high-speed NAND gating is required in a compact surface-mount form factor. The AS series offers superior speed compared to standard 74LS counterparts. Verify that the system power supply remains stable within the specified 4.5 V to 5.5 V range to ensure reliable operation and prevent signal integrity issues.

Part Context

This part is part of the Texas Instruments 74AS family, known for balancing speed and power consumption. It serves as a direct functional replacement for other dual 4-input NAND gates in legacy designs, offering improved performance metrics while maintaining compatible pinouts for many existing board layouts.

Replacement Considerations

Check for equivalent parts such as SN74S20 or SN74LS20 if speed requirements are lower. Verify pin compatibility and voltage levels when substituting with other manufacturers' offerings.