SN54LS273J

Flip Flops Overview

The SN54LS273J is a space-rated octal D-type flip-flop manufactured by Texas Instruments. It features eight positive-edge-triggered D-type flip-flops with a common clear input. The device operates within a supply voltage range of 4.75V to 5.25V, with a nominal voltage of 5V. Maximum propagation delay is 27ns at nominal voltage, and the maximum operating frequency is 35MHz. It supports an output low current of 8mA and has a maximum ICC of 27mA. The component is housed in a 20-lead ceramic dual in-line package (CDIP) and functions across an extended temperature range of -55°C to 125°C.

Flip Flops Feature Summary

• Space-rated construction for high-reliability applications
• Octal configuration with single clear input
• Positive-edge triggering mechanism
• Ceramic dual in-line packaging

Flip Flops Applications

• Aerospace data storage systems
• Military-grade digital logic circuits
• High-reliability computing registers

Flip Flops Procurement Notes

Verify that the specific part number includes the 'J' suffix indicating the ceramic DIP package variant. Confirm space-rating certification documentation is available from the manufacturer or authorized distributors. Ensure compatibility with existing board layouts requiring 20-lead CDIP footprints. Validate thermal management requirements for the specified operating temperature range during system integration.

Flip Flops Selection Notes

Select this component when space radiation tolerance and wide temperature operation are mandatory. Compare against standard commercial variants if environmental constraints allow. Consider pin-out compatibility with existing designs using the SN54LS273 family. Evaluate power consumption limits against system budgets given the LS technology characteristics.

Flip Flops Part Context

This part belongs to the SN54 series, which denotes military/space-grade performance levels compared to the commercial SN74 series. It utilizes Low-power Schottky (LS) TTL technology, balancing speed and power dissipation. The device provides synchronous data storage capabilities essential for sequential logic design in critical systems.

Flip Flops Replacement Considerations

SN54LS273SP is a direct equivalent offering identical functionality with space rating.