JM54AC174BFA-RH

Overview

The JM54AC174BFA-RH is a hex D-type flip-flop from the AC series, manufactured by National Semiconductor. It features positive edge triggering and true outputs for six independent functions within a single package. The device utilizes CMOS technology and is housed in a hermetic ceramic flatpack (CDFP) package with 16 pins. It supports an operating voltage range of 2V to 6V and operates reliably across a temperature range of -55°C to +125°C. The component is designed for high-speed applications, supporting a maximum frequency of 65 MHz at nominal supply voltage, with a load capacitance specification of 50 pF.

Feature Summary

• Hermetically sealed ceramic packaging suitable for harsh environments
• Radiation hardness qualification for aerospace applications
• Immunity to single event latch-up and upset

Applications

• Aerospace data processing systems
• Military communication equipment
• Spacecraft control logic

Procurement Notes

Verify that the specific suffix 'RH' corresponds to the required radiation-hardened qualification level and hermetic sealing specifications. Confirm the manufacturer origin, as National Semiconductor assets are now managed by other entities. Ensure the part meets the specific military or aerospace standards required for your system design before procurement.

Selection Notes

Select this component when radiation tolerance and long-term reliability in extreme temperatures are critical. The AC series offers a balance of speed and power consumption. Consider the hermetic package requirement versus cost if environmental conditions allow for non-hermetic alternatives. Verify pin compatibility with existing board layouts due to the specific flatpack form factor.

Part Context

This part belongs to the 54AC family of high-speed CMOS logic devices. The 54 prefix typically denotes military-grade temperature ranges and performance standards. The AC series provides faster switching speeds compared to older HC or HCT families while maintaining CMOS low-power characteristics. The specific model integrates six D-flip-flops with clock and clear inputs.

Replacement Considerations

Public confirmed substitute part numbers: 54AC174FMQB.