SNJ54F109FK

Flip Flops Overview

The SNJ54F109FK is a dual J-K flip-flop from the Texas Instruments SN54F series, housed in a 20-pin LCCC package. It operates on a supply voltage range of 4.5 V to 5.5 V with a propagation delay of 8 ns. The device features TTL-compatible inputs and outputs, supporting low-level output currents up to 20 mA and high-level currents of -1 mA. It functions within an extended temperature range of -55°C to +125°C.

Flip Flops Feature Summary

• Dual negative-edge-triggered J-K flip-flops with independent clear and preset controls
• Military-grade reliability with extended temperature operation from -55°C to +125°C
• TTL-compatible input and output logic levels for standard interface integration

Flip Flops Applications

• Military aerospace digital systems requiring radiation-hardened or high-reliability logic
• High-speed data processing units utilizing fast switching characteristics
• Industrial control systems operating in extreme environmental conditions

Flip Flops Procurement Notes

Verify that the specific suffix FK corresponds to the 20-lead ceramic LCCC package configuration required for your board layout. Confirm that the military grade designation aligns with your system's environmental specifications. Ensure compatibility with existing 5V logic families before finalizing component selection for production.

Flip Flops Selection Notes

Select this component when high-speed performance combined with military-grade temperature stability is required. The SN54F series offers faster switching than LS variants while maintaining TTL compatibility. Consider the ceramic LCCC package for superior thermal and mechanical robustness in harsh environments compared to plastic packages.

Flip Flops Part Context

This part belongs to the SN54F family of high-speed logic devices manufactured by Texas Instruments. The SN54 series is distinguished by its wider operating temperature range and higher reliability standards compared to the commercial SN74 series. The F series specifically provides fast propagation delays suitable for demanding digital applications.

Flip Flops Replacement Considerations

SN54F109FK is the direct commercial equivalent. SNJ54F109J serves as a pin-compatible alternative in CDIP packaging. Cross-reference SN74F109DR for commercial temperature range applications where military specifications are not required.