SNJ54F21FK

Inverter Gates Overview

The SNJ54F21FK is a dual 4-input AND gate from the F/FAST logic series, manufactured by Texas Instruments. It features true output polarity and operates within an extended temperature range of -55°C to 125°C. The device utilizes a 20-lead ceramic LCC (LCCC20) package with metal-sealed cofired construction. Designed for high-speed digital applications, it supports unidirectional signal processing with specific drive capabilities defined by its series characteristics.

Inverter Gates Feature Summary

• Dual independent 4-input AND logic functions
• Extended military-grade temperature operation
• High-speed F/FAST series performance
• Robust ceramic packaging for harsh environments

Inverter Gates Applications

• Military avionics logic systems
• Spacecraft data handling units
• Harsh environment industrial controllers
• High-reliability digital signal gating

Inverter Gates Procurement Notes

Verify the component matches the exact SNJ54F21FK designation, as variations exist in suffixes or alternative packages like CDIP. Confirm the ceramic LCC-20 package type and lead-free status if required by specific assembly standards. Ensure the source provides valid traceability documentation suitable for defense or aerospace procurement requirements.

Inverter Gates Selection Notes

Select this part when dual 4-input AND functionality is required in extreme thermal conditions. The F/FAST series offers faster switching than standard TTL equivalents. The ceramic package is essential for applications requiring hermetic sealing and resistance to mechanical stress or radiation exposure compared to plastic alternatives.

Inverter Gates Part Context

This component belongs to the Texas Instruments F/FAST family, known for high-speed CMOS-compatible logic. The SNJ prefix indicates a military-grade version with enhanced screening. It serves as a fundamental building block for complex digital circuits requiring reliable logical conjunction operations in demanding operational scenarios.

Inverter Gates Replacement Considerations

Check for SNJ54F21J (CDIP package) if pin compatibility allows. Verify functional equivalence with other dual 4-input AND gates from the same series before substitution.