100371QCX

Overview

The Fairchild Semiconductor 100371QCX is a low-power triple 4-input multiplexer belonging to the 100K series. It features three independent 4-to-1 data selectors housed in a 28-pin PLCC (J-Lead) surface-mount package. The device operates with ECL-compatible logic levels and provides configurable output polarity. Designed for high-speed signal routing applications, it integrates internal termination resistors to minimize reflections and power consumption.

Feature Summary

• Triple independent 4-to-1 multiplexing architecture
• Low-power ECL-compatible operation
• Configurable output polarity options
• Integrated termination resistors for signal integrity

Applications

• High-speed data routing systems
• ECL-based logic circuits
• Signal switching networks
• Telecommunications equipment

Procurement Notes

Verify the specific suffix 'Q' indicates RoHS compliance status as per Fairchild documentation. Confirm the package type is PLCC with J-leads, distinct from standard QFP packages. Ensure the datasheet version matches the manufacturing date code for accurate electrical specifications. Cross-reference pinouts with official Fairchild diagrams to avoid interface mismatches during integration.

Selection Notes

Select this component when triple independent multiplexing is required within an ECL system. The 100K series offers a balance of speed and power dissipation suitable for moderate-frequency applications. Consider the 28-PLCC package constraints for PCB layout density. Verify voltage supply requirements align with standard ECL levels before finalizing the design.

Part Context

This part belongs to Fairchild's 100K series of high-speed logic devices. The series includes various decoders, drivers, and multiplexers designed for ECL compatibility. The 100371QCX specifically addresses the need for multiple independent signal paths in a compact surface-mount form factor, distinguishing it from single-channel alternatives.

Replacement Considerations

Check for direct equivalents such as the MC100371 or similar 100K series parts from other manufacturers. Ensure pin compatibility and logical function match exactly. Verify that alternative suppliers provide identical ECL performance characteristics and package dimensions.