JD54LS174SEA

Overview

The JD54LS174SEA is a military-grade hex D-type flip-flop manufactured by National Semiconductor. It features six independent positive-edge-triggered D flip-flops with a common clear input, providing true outputs. The device utilizes LS-TTL technology and operates within a supply voltage range of 4.75 V to 5.25 V. It is housed in a 16-lead ceramic flatpack (CDFP) package, designed for high reliability in harsh environments. The component supports an operating temperature range from -55 °C to 125 °C, ensuring functionality under extreme thermal conditions typical of military applications.

Feature Summary

• Hex configuration of positive-edge-triggered D-type flip-flops with a shared clear function
• Military-grade construction using ceramic flatpack packaging for enhanced durability
• LS-TTL logic family compatibility ensuring standard interface characteristics

Applications

• Military aerospace digital systems requiring high reliability
• Harsh environment data storage and register applications
• Industrial control systems with extended temperature requirements

Procurement Notes

Verify the specific suffix 'SEA' against official National Semiconductor or Texas Instruments documentation to confirm exact pinout, lead finish, and screening level. Ensure the supplier provides traceability to MIL-STD-883 standards if military qualification is required. Cross-reference the manufacturer history as National Semiconductor assets were acquired by Texas Instruments.

Selection Notes

Select this component when a hex D-type flip-flop with a common clear input is required for military or industrial applications. Consider the ceramic flatpack package for superior thermal and mechanical stability compared to plastic variants. Verify that the LS-TTL speed and power consumption profiles align with the system design constraints before integration.

Part Context

This part belongs to the 54LS series of logic integrated circuits, which are characterized by their military temperature rating and robust construction. The 54LS174 variant specifically provides hex D-type flip-flops, distinguishing it from other logic families like 74LS which are commercial grade. The ceramic flatpack package offers hermetic sealing capabilities essential for defense and space applications.

Replacement Considerations

Public confirmed substitute part numbers: SN54LS174W, SN54LS174.