SNJ54LS374FK

Flip Flops Overview

The SNJ54LS374FK is an octal edge-triggered D-type flip-flop manufactured by Texas Instruments. It features eight independent D-type flip-flops with three-state outputs, housed in a 20-lead ceramic LCC package. The device operates within a military-grade temperature range of -55°C to 125°C. Key electrical parameters include a maximum propagation delay of 28 ns at 5V with 45 pF load capacitance, and output drive capabilities of 24 mA low-level and 2.6 mA high-level current. It functions as a bus driver with unidirectional counting direction and low enable control.

Flip Flops Feature Summary

• Octal configuration providing eight independent edge-triggered D-type flip-flops for parallel data storage
• Three-state outputs allowing direct connection to system buses without additional interface logic
• Military-grade reliability certified for operation across the full -55°C to 125°C temperature range
• Ceramic leadless chip carrier packaging designed for high-reliability aerospace and defense applications

Flip Flops Applications

• High-reliability military communication systems requiring robust data latching
• Aerospace avionics bus interfaces utilizing three-state output buffering
• Defense electronics operating under extreme environmental temperature conditions
• Industrial control systems demanding long-term stability and wide thermal tolerance

Flip Flops Procurement Notes

Verify that the specific suffix FK corresponds to the 20-lead ceramic LCC package variant when sourcing. Confirm military grade qualification status and temperature range compliance (-55°C to 125°C) against project requirements. Ensure compatibility with existing board layouts for the QLCC footprint. Check for any specific handling instructions related to ceramic packages during assembly.

Flip Flops Selection Notes

Select this component for designs requiring octal data storage with bus-compatible outputs in harsh environments. The LS series offers standard TTL compatibility while maintaining low power consumption relative to faster families. Consider the ceramic package for superior thermal cycling resistance compared to plastic variants. Evaluate pin count and package dimensions against available PCB space constraints.

Flip Flops Part Context

This part belongs to the Texas Instruments 54LS/74LS logic family, which provides Low-power Schottky characteristics. The 54-series designation indicates military-grade specifications, including extended temperature ranges and stricter manufacturing controls compared to commercial 74-series parts. It serves as a fundamental building block for sequential logic circuits in critical systems.

Flip Flops Replacement Considerations

SN54LS374J (14-CDIP), SN54AS374 (Octal D-Type, CDIP), SN54LS374J (20-CDIP). Verify package type and pinout compatibility before substitution.