SN54LS73AJ

Flip Flops Overview

The SN54LS73AJ is a dual J-K flip-flop with clear and three-state outputs manufactured by Texas Instruments. It features a 14-pin ceramic dual in-line package (CDIP) designed for military-grade reliability. The device operates within an extended temperature range of -55°C to 125°C, ensuring stable performance in harsh environments. Key electrical characteristics include a maximum operating frequency of 30 MHz at nominal supply voltage. The logic circuit supports true output polarity and includes hold mode functionality. Load capacitance specifications are defined at 45 pF, with a disable time parameter noted for CL = 5 pF. The component conforms to LS logic series standards.

Flip Flops Feature Summary

• Dual J-K flip-flops with integrated clear function
• Three-state outputs for bus driving applications
• Military-grade temperature range from -55°C to 125°C
• Hold mode capability for data retention

Flip Flops Applications

• Military aerospace control systems
• High-reliability digital storage circuits
• Industrial process control interfaces
• Harsh environment communication equipment

Flip Flops Procurement Notes

Verify the specific suffix 'A' indicates the military grade variant when sourcing. Confirm the 14-CDIP package availability as standard plastic packages differ. Ensure the supplier provides traceability documentation required for defense or aerospace contracts. Check compliance with current export control regulations due to the military classification. Validate that the component meets the specified -55°C to 125°C operational range for your application.

Flip Flops Selection Notes

Select this component when military-grade reliability and wide temperature operation are mandatory. The SN54LS73AJ differs from commercial variants by its robust packaging and extended thermal limits. Consider the three-state output feature if bus isolation is required in the design. Verify that the dual J-K configuration matches the sequential logic requirements. Compare against SN54ALS73AJ for potential speed improvements if power consumption allows.

Flip Flops Part Context

This part belongs to the Texas Instruments SN54LS family of high-speed Schottky logic devices. The SN54 series is distinguished from the SN74 series by its wider temperature range and military qualification. It serves as a fundamental building block for sequential logic in critical systems. The LS technology offers a balance between speed and power dissipation suitable for complex digital designs.

Flip Flops Replacement Considerations

SN54ALS73AJ offers faster switching speeds but requires careful power analysis. SN54S73AJ provides similar speed with higher power consumption. Commercial equivalents like SN74LS73 lack the military temperature rating and packaging. Verify pin compatibility and electrical parameters before substituting any alternative device.