SNJ54LS273J

Flip Flops Overview

The SNJ54LS273J is an octal D-type flip-flop with a clear input, belonging to the Texas Instruments LS logic family. It features true outputs and operates within a supply voltage range of 4.75 V to 5.25 V. The device supports a maximum operating frequency of 35 MHz at nominal voltage, with a typical propagation delay of 27 ns. It utilizes a 20-lead ceramic dual in-line package (CDIP) designed for high reliability. The component is rated for an extended industrial temperature range from -55 °C to 125 °C, making it suitable for demanding environments.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type flip-flops with positive edge triggering
• Integrated asynchronous clear function for immediate output reset
• True output polarity without inversion
• Ceramic dual in-line packaging ensuring durability in harsh conditions

Flip Flops Applications

• Military and aerospace digital systems requiring radiation-hardened or high-reliability components
• Industrial control applications operating in extreme temperature environments
• High-speed data storage and transfer circuits utilizing octal registers
• Communication equipment requiring precise timing and signal synchronization

Flip Flops Procurement Notes

Verify that the specific part number matches the required space-rated variant, as standard commercial versions differ significantly in construction and performance specifications. Confirm the package type corresponds to the ceramic dual in-line format rather than plastic alternatives. Ensure compatibility with existing system voltage levels and thermal management requirements before integration into final designs.

Flip Flops Selection Notes

Select this component when designing systems that demand robust performance across wide temperature fluctuations and high reliability standards. The LS series offers a balance of speed and power consumption suitable for complex logic applications. Consider the physical dimensions of the 20-lead ceramic package during PCB layout planning to ensure proper mounting and thermal dissipation capabilities are maintained throughout the operational lifecycle.

Flip Flops Part Context

This component belongs to the broader SN54/74 logic family produced by Texas Instruments, specifically targeting the military and aerospace sectors through its specialized construction. The 'SNJ' prefix indicates a specific manufacturing process optimized for high reliability and environmental resistance compared to standard commercial variants. It represents a critical element in legacy and specialized digital design architectures requiring proven long-term stability.

Flip Flops Replacement Considerations

Direct substitutes include the SN54LS273J and SN54LS273W, which share identical logical functionality but may vary in package style or minor manufacturing details. Cross-reference datasheets to confirm pinout compatibility and electrical parameter alignment before substitution.