54F161AFMQB

Overview

The 54F161AFMQB is a synchronous binary counter belonging to the F/FAST series, manufactured by National Semiconductor. It features an asynchronous clear function and operates within a voltage range of 2 V to 6 V for CMOS compatibility. The device is housed in a hermetic ceramic flatpack package with 24 pins, designed for high radiation hardness suitable for aerospace applications. It supports operation temperatures from -55 °C to +125 °C and includes QML-V qualification.

Feature Summary

• Synchronous binary counting with asynchronous clear functionality
• High radiation hardness against total ionizing dose and single event effects
• Hermetic ceramic packaging for harsh environmental conditions

Applications

• Aerospace systems requiring radiation-hardened logic
• Harsh environment industrial control units
• Military electronic equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm QML-V certification status and radiation test reports are included with documentation. Ensure the ceramic package integrity matches specifications for hermetic sealing requirements.

Selection Notes

Select this component when radiation tolerance and wide temperature operation are critical. Compare against standard commercial variants if space constraints allow non-hermetic packages. Verify voltage compatibility with system power rails within the specified 2 V to 6 V range.

Part Context

Part of the 54AC/54ACT series family designed for demanding environments. Shares functional similarities with other radiation-hardened counters but offers specific pinout and package characteristics unique to the F/FAST series configuration.

Replacement Considerations

Check for equivalent radiation-hardened counters with compatible pinouts. Verify that substitute parts meet the same QML-V standards and temperature ranges.