SNJ54ALS74AW

Flip Flops Overview

The SNJ54ALS74AW is a military-grade dual positive-edge-triggered D-type flip-flop from Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features an operating temperature range of -55°C to +125°C. The device includes independent preset (PRE) and clear (CLR) inputs that are active low, allowing for asynchronous control of the Q and /Q outputs. It utilizes ALS logic series technology with TTL-compatible inputs and outputs, housed in a ceramic W package.

Flip Flops Feature Summary

• Dual independent positive-edge-triggered D-type flip-flops
• Active-low asynchronous preset and clear inputs
• Military-grade wide temperature operation capability
• TTL-compatible input and output characteristics

Flip Flops Applications

• Military aerospace data processing systems
• High-reliability communication equipment
• Harsh environment digital storage circuits
• Avionics timing and control logic

Flip Flops Procurement Notes

Verify the SNJ prefix indicates military grade qualification and the AW suffix denotes the specific ceramic package variant. Confirm RoHS compliance status as military parts may differ from commercial standards. Ensure the supplier provides traceability documentation required for defense or aerospace procurement specifications.

Flip Flops Selection Notes

Select this component when high reliability and extended temperature performance are critical. The SNJ54ALS74AW offers superior thermal stability compared to commercial SN74 variants. Consider the ceramic package durability for vibration-prone environments. Verify power supply constraints align with the 4.5 V to 5.5 V operational range.

Flip Flops Part Context

This part belongs to the SN54ALS74A family of dual D-type flip-flops. The SNJ designation signifies military screening and quality standards. It shares functional compatibility with other ALS series devices while providing enhanced environmental resilience. The W package ensures hermetic sealing for extreme conditions.

Flip Flops Replacement Considerations

SN54ALS74AJ

Flip Flops FAQ

What is the function of the PRE and CLR inputs?

The preset and clear inputs are active low. A low signal on PRE sets the Q output high, while a low signal on CLR resets the Q output low, both asynchronously overriding the clock and data inputs.

How does the SNJ54ALS74AW differ from the SN74ALS74A?

The SNJ54ALS74AW is a military-grade device with a wider operating temperature range (-55°C to +125°C) and a hermetic ceramic package, whereas the SN74ALS74A is a commercial-grade device with a limited temperature range and plastic packaging.