SN74AS02NG4

Overview

The SN74AS02NG4 is a quadruple 2-input positive-NOR gate integrated circuit manufactured by Texas Instruments. It belongs to the AS (Advanced Schottky) logic family, designed for high-speed digital applications. The device features four independent NOR gates within a single package. It operates with a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a maximum propagation delay of 4.5 ns at 5 V with a 50 pF load. Output drive capabilities are specified as 2 mA for high state and 20 mA for low state. Logic level thresholds define a low input voltage maximum of 0.8 V and a high input voltage minimum of 2 V. The component is housed in a 14-pin Dual In-Line Package (DIP) suitable for through-hole mounting.

Feature Summary

• Provides four independent 2-input NOR logic functions in a single integrated circuit
• Utilizes Advanced Schottky technology to achieve high switching speeds
• Features robust push-pull output stages capable of driving standard TTL loads

Applications

• High-speed digital logic circuits requiring NOR functionality
• Data processing systems utilizing standard 5V logic levels
• Industrial control interfaces operating within commercial temperature ranges

Procurement Notes

Verify the complete part number including the G4 suffix to confirm lead-free status and RoHS compliance. Ensure the packaging type matches the required 14-DIP form factor for your assembly process. Confirm that the supplier provides official datasheets referencing the SN74AS02 specifications. Check for any specific handling requirements related to static-sensitive devices during storage and installation.

Selection Notes

Select this component when advanced Schottky speed is required alongside NOR logic functionality. Compare propagation delays against other logic families if timing constraints are critical. Verify that the 14-pin DIP package fits the available board space and mounting style. Ensure the operating temperature range meets the environmental conditions of the intended application.

Part Context

This component is part of the Texas Instruments SN74AS series, which offers improved performance over standard 74S logic. The SN74AS02 specifically implements NOR gates, complementing other gates like NAND, OR, and AND within the same family. It is designed for compatibility with existing 74-series designs while providing faster switching times and reduced power consumption per gate.

Replacement Considerations

Direct replacements include SN74AS02N or SN74AS02NE4 for identical pinouts and functions. Cross-family substitutes like SN74LS02 offer lower speed but higher noise immunity. Verify pin compatibility and logic truth tables before substituting with similar NOR gate ICs from other manufacturers.