100321QC

Overview

The Fairchild Semiconductor 100321QC is a low-power CMOS logic device belonging to the 100K series. It functions as a 9-bit inverter, providing nine independent NOT gates within a single integrated circuit. The component is housed in a 28-pin PLCC (Plastic Leaded Chip Carrier) package with dimensions of 11.51x11.51 mm. This configuration allows for efficient signal inversion in digital circuits while maintaining low power consumption characteristics typical of the 100K series.

Feature Summary

• Provides nine independent inverting channels for signal processing
• Utilizes low-power CMOS technology for energy efficiency
• Designed for high noise immunity and reliable operation

Applications

• Digital signal inversion in logic circuits
• Clock signal conditioning
• General-purpose logic buffering

Procurement Notes

Verify the manufacturer status carefully, as some sources indicate this part may be obsolete or non-compliant with RoHS standards. Confirm the specific package variant and pinout compatibility with your PCB design before procurement. Ensure the supplier provides authentic Fairchild or ON Semiconductor documentation to avoid counterfeit components.

Selection Notes

Select this component when nine independent inverters are required in a compact surface-mount package. Consider the 100K series power-speed trade-off if higher speed is needed. Verify voltage supply requirements and ensure the PLCC footprint matches the target board layout constraints.

Part Context

This device is part of Fairchild's extensive portfolio of standard logic ICs. The 100K series represents a specific generation of low-power CMOS logic designed for general-purpose applications. It sits alongside other inverters and buffers in the company's catalog, offering a balance between power efficiency and functional density for digital systems.

Replacement Considerations

Check for direct pin-to-pin replacements from ON Semiconductor, which acquired Fairchild's logic business. Verify equivalent gate counts and package dimensions for any substitute parts to ensure mechanical and electrical compatibility without redesigning the host circuit.