SNJ54AC74FK

Flip Flops Overview

The SNJ54AC74FK is a military-grade dual positive-edge-triggered D-type flip-flop manufactured by Texas Instruments. It features independent clear and preset inputs for direct control of the output state. The device operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -55°C to 125°C. It utilizes a 20-pin LCCC (FK) package. Key electrical characteristics include a maximum input current of 0.02 mA at nominal voltage, with CMOS input and output types. The component provides high drive strength with output currents up to 24 mA.

Flip Flops Feature Summary

• Dual positive-edge-triggered D-type flip-flops with independent clear and preset functions
• Military-grade reliability designed for operation in extreme environmental conditions
• CMOS input and output structure ensuring low power consumption and high noise immunity

Flip Flops Applications

• High-reliability digital logic data storage systems
• Aerospace and defense signal processing circuits
• Industrial control systems requiring wide temperature tolerance

Flip Flops Procurement Notes

Verify that the specific FK package variant matches your PCB footprint requirements, as the LCCC form factor differs from standard surface-mount packages. Confirm that the military grade designation aligns with your project's environmental qualification standards. Ensure that the supply voltage range of 2 V to 6 V is compatible with your system's power distribution network. Check for any specific handling instructions related to the ceramic or leadless package construction during assembly.

Flip Flops Selection Notes

Select this component when dual edge-triggered storage is required in harsh environments. The AC series offers a balance of speed and power suitable for complex logic applications. Consider the 20-pin LCCC package constraints regarding board space and thermal management. Verify compatibility with existing clocking architectures due to the positive-edge trigger requirement. Evaluate the need for active-low clear and preset signals in your design flow.

Flip Flops Part Context

This part belongs to the SN54AC74 family of dual D-type flip-flops. The SNJ prefix indicates a military-grade version, distinguishing it from commercial variants like the SN54AC74. The FK suffix specifies the 20-lead Leadless Ceramic Chip Carrier package. This family is part of Texas Instruments' broader AC logic line, providing enhanced performance over older HC/HCT series devices while maintaining pin-out compatibility with many industry-standard equivalents.

Flip Flops Replacement Considerations

• SN54AC74FK

Flip Flops FAQ

What is the trigger type for the SNJ54AC74FK?

The device uses positive-edge triggering for both flip-flops.

Does the SNJ54AC74FK have asynchronous control inputs?

Yes, it includes active-low clear and preset inputs for each flip-flop.