SN74HC02DR

Overview

The SN74HC02DR is a quadruple 2-input positive-NOR gate manufactured by Texas Instruments. It belongs to the HC (High-speed CMOS) logic series and operates within a supply voltage range of 2 V to 6 V. The device features four independent NOR gates, providing eight inputs and four outputs in a single package. It utilizes a 14-pin Small Outline Integrated Circuit (SOIC) surface-mount package with a standard 0.3-inch width. Designed for low power consumption and high noise immunity, it supports operation across an extended temperature range from -40°C to +85°C.

Feature Summary

• Contains four independent 2-input NOR logic functions
• Operates on a wide supply voltage range from 2 V to 6 V
• Provides high noise immunity suitable for noisy environments
• Utilizes low-power CMOS technology

Applications

• General-purpose digital logic circuits
• Signal processing applications requiring NOR logic
• Embedded systems control logic
• Industrial communication interface gating

Procurement Notes

Verify the component authenticity through official Texas Instruments channels or authorized distributors. Confirm the specific datasheet revision matches the production batch requirements. Ensure the SOIC-14 package dimensions align with the printed circuit board footprint specifications. Check RoHS compliance status if environmental regulations apply to the final assembly. Validate that the operating temperature range meets the system's thermal design constraints.

Selection Notes

Select this component when a quadruple 2-input NOR function is required in a compact surface-mount format. The HC series offers a balance of speed and power efficiency compared to older logic families. Consider the 2 V to 6 V operating range for compatibility with various logic levels. The 14-pin SOIC package facilitates automated assembly processes. Evaluate the propagation delay characteristics against the system timing requirements.

Part Context

This part is part of the SNx4HC02 family of quadruple 2-input positive-NOR gates. The 'SN' prefix indicates commercial grade availability, while 'HC' denotes High-speed CMOS technology. The 'D' suffix specifies the 14-pin SOIC package type, and 'R' typically indicates reel packaging. This series is designed to be pin-compatible with previous generations like the 74LS02 but offers improved performance metrics.

Replacement Considerations

Compatible substitutes include other manufacturers' SN74HC02 variants in SOIC-14 packages. Cross-reference with SN54HC02 for military-grade temperature ranges if necessary. Verify pinout compatibility before replacing with generic equivalents. Ensure voltage thresholds match the existing circuit design.