100302QCX

Overview

The Fairchild Semiconductor 100302QCX is a monolithic quint 2-input OR/NOR gate belonging to the 100K series of ECL logic. It integrates five independent logic circuits within a single package, providing configurable logic operations for digital systems. The component utilizes a 28-PLCC (Plastic Leaded Chip Carrier) surface-mount package with J-leads, designed for high-speed signal processing applications requiring low power consumption and reliable performance in complex electronic designs.

Feature Summary

• Integrates five independent 2-input OR/NOR gates in a single monolithic structure
• Operates within the 100K series ECL logic family for high-speed performance
• Features configurable logic functionality to support diverse circuit requirements
• Utilizes a 28-pin PLCC surface-mount package for compact board integration

Applications

• Digital logic circuits requiring multiple OR/NOR operations
• Signal buffering and routing in high-speed data paths
• Fan-out expansion in ECL-based system architectures

Procurement Notes

Verify the manufacturer origin, as Fairchild Semiconductor assets are now managed by onsemi. Confirm the specific suffix QCX corresponds to the 28-PLCC package variant. Ensure compatibility with existing ECL voltage levels and termination requirements. Check for obsolescence status given the transition from Fairchild to onsemi product lines. Validate pinout alignment with current design schematics before procurement.

Selection Notes

Select this component when designing systems that require multiple configurable OR/NOR functions within a single footprint. The 100K series offers a balance of speed and power dissipation suitable for general-purpose ECL applications. Consider the 28-PLCC package constraints regarding thermal management and PCB layout space. Ensure the design supports the specific input/output characteristics defined in the official datasheet for reliable operation.

Part Context

This part belongs to the 100K series of ECL logic devices manufactured originally by Fairchild Semiconductor. These components are designed for high-speed digital applications where propagation delay is critical. The quint configuration allows designers to consolidate multiple logic gates, reducing component count and board space compared to discrete solutions or smaller gate packages.

Replacement Considerations

Check for equivalents within the onsemi portfolio following the acquisition of Fairchild's logic assets. Verify pin-to-pin compatibility if substituting with other 28-PLCC ECL gates. Ensure logical function equivalence for all five channels. Consult official cross-reference guides for confirmed substitute part numbers rather than relying on generic compatibility assumptions.