SNJ54HC273W

Flip Flops Overview

The SNJ54HC273W is a military-grade octal D-type flip-flop manufactured by Texas Instruments. It features eight positive-edge-triggered D flip-flops with independent data inputs and non-inverting outputs, incorporating a master reset input. The device operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -55°C to 125°C. It utilizes a 20-lead ceramic flatpack (CFP) package with glass-sealed construction for enhanced environmental reliability.

Flip Flops Feature Summary

• Contains eight positive-edge-triggered D-type flip-flops with independent data inputs
• Includes a dedicated master reset input to initialize all flip-flops simultaneously
• Features non-inverting outputs providing direct logic state representation
• Constructed in a hermetically sealed ceramic flatpack package for harsh environments

Flip Flops Applications

• Military aerospace systems requiring high-reliability digital storage
• Avionics data acquisition and processing units
• Harsh environment industrial control systems
• Spacecraft telemetry and command logic circuits

Flip Flops Procurement Notes

Verify the specific ordering suffix to confirm the exact package variant and lead-free status, as suffixes denote physical packaging differences without altering electrical function. Confirm RoHS compliance status against current regulatory requirements, noting that some heritage military parts may not meet standard consumer environmental directives. Ensure the supplier provides traceability documentation suitable for defense or aerospace procurement standards.

Flip Flops Selection Notes

Select this component when designing systems requiring radiation-hardened or extreme temperature tolerance compared to commercial variants. The HC series offers higher speed than LS equivalents while maintaining CMOS power efficiency. Consider the CFP package constraints regarding PCB layout and thermal management. Verify that the 2V to 6V supply range aligns with the system's power architecture, particularly if lower voltage operation is required.

Flip Flops Part Context

This part belongs to the SN54/74HC family of high-speed CMOS logic devices. The 'SNJ' prefix indicates a military-grade qualification level, ensuring performance across the full -55°C to 125°C temperature range. The 'HC' designation specifies High-speed CMOS technology, offering faster switching speeds than standard HC devices while consuming less power than TTL alternatives. This specific model is an octal flip-flop, distinct from gate-based logic functions.

Flip Flops Replacement Considerations

For equivalent functionality, consider the SN54HC273FK in a LCCC package or SN54HC273J in a CDIP package. Commercial grade replacements include the SN74HC273 series, though these lack the extended temperature range and hermetic sealing. Verify pinout compatibility and ensure the replacement meets the specific voltage and temperature requirements of the application.

Flip Flops FAQ

What is the trigger type for the SNJ54HC273W?

The device uses positive-edge triggering for all eight D flip-flops.

Does the SNJ54HC273W have a reset function?

Yes, it includes a single master reset input that asynchronously resets all flip-flops to a low state.

What is the output configuration?

The outputs are non-inverting, directly reflecting the Q state of each flip-flop.