SNJ54HC174FK

Flip Flops Overview

The SNJ54HC174FK is a military-grade hex D-type flip-flop featuring positive-edge triggering and an asynchronous clear input. Manufactured by Texas Instruments, it utilizes HC technology to support operation across a wide voltage range of 2V to 6V. The device provides six independent D-type flip-flops within a single package. It is designed for high-speed applications with a maximum propagation delay of 34ns at nominal voltage. The component supports a maximum operating frequency of 28MHz and includes output drive capabilities of 5.2mA low-level and -5.2mA high-level current. It operates reliably in extreme environments with a temperature range spanning from -55°C to 125°C.

Flip Flops Feature Summary

• Hex configuration containing six independent D-type flip-flops with positive-edge clocking
• Asynchronous active-low clear input for immediate state reset
• Military-grade reliability supporting extended temperature ranges
• High-speed logic performance suitable for demanding digital systems

Flip Flops Applications

• Military aerospace data processing systems
• Defense communication equipment registers
• Harsh environment industrial control storage
• Spacecraft telemetry data latching

Flip Flops Procurement Notes

Verify the specific ordering suffix FK to confirm the 20-lead ceramic flat pack (LCCC) package configuration. Ensure the procurement channel sources genuine Texas Instruments components to guarantee military-grade quality standards. Confirm that the device meets all specified environmental requirements for the intended operational context. Cross-reference the manufacturer part number against official TI documentation to avoid counterfeit risks.

Flip Flops Selection Notes

Select this component when military-grade durability and wide temperature tolerance are required. The HC technology offers a balance of speed and power consumption suitable for complex logic circuits. Consider the 20-lead LCCC package for applications requiring robust physical mounting in vibration-prone environments. Evaluate the asynchronous clear functionality for system reset requirements. Compare against standard commercial variants if environmental extremes are not a primary design constraint.

Flip Flops Part Context

This device belongs to the SN54/74HC series of high-speed CMOS logic devices. The SN54 prefix indicates military-grade qualification, distinguishing it from the commercial SN74 series. It is part of the broader family of D-type flip-flops used for data storage and transfer in digital logic designs. The HC series is known for compatibility with standard TTL inputs while offering improved switching speeds.

Flip Flops Replacement Considerations

Public confirmed substitute part numbers include SN54HC174FKR and SN54HC174FKE4.