JM54AC299BRA

Shift Registers Overview

The JM54AC299BRA is a military-grade, single 8-bit bidirectional universal shift register manufactured by National Semiconductor. It utilizes AC-CMOS technology and operates within a supply voltage range of 3.3 V to 5 V. The device features a ceramic dual in-line package (DIP) with 20 pins. It supports serial-in/serial-out and parallel-in/parallel-out data transfer modes, includes a synchronous clear function, and provides three-state outputs for bus-oriented applications. The component is rated for operation across the full military temperature range of -55 °C to 125 °C.

Shift Registers Feature Summary

• Bidirectional data shifting capability supporting both serial and parallel I/O configurations
• Synchronous clear input for immediate data reset control
• Three-state output drivers enabling direct system bus interfacing
• Military-qualified ceramic packaging for harsh environment reliability

Shift Registers Applications

• Military aerospace data processing systems
• High-reliability industrial communication interfaces
• Secure military encryption hardware modules

Shift Registers Procurement Notes

Verify the manufacturer date code and lot traceability to ensure compliance with current military specifications. Confirm that the ceramic DIP package integrity meets MIL-STD requirements for thermal cycling and mechanical shock resistance. Request detailed test reports for leakage current and switching speed to validate performance against original datasheet limits before final procurement approval.

Shift Registers Selection Notes

Select this component when military-grade environmental tolerance and high-speed CMOS logic are required. Ensure the design accommodates the specified 3.3 V to 5 V operating range. Verify that the 20-pin DIP footprint matches the target PCB layout constraints. Consider the three-state output drive strength for bus loading calculations in complex digital systems.

Shift Registers Part Context

This part belongs to the SN54AC series of high-speed CMOS logic devices originally developed by National Semiconductor. The 'JM' prefix indicates a specific military qualification level and ceramic package variant. Texas Instruments acquired National Semiconductor, maintaining the legacy product line under its portfolio for defense and aerospace applications requiring long-term availability.

Shift Registers Replacement Considerations

Cross-reference with SN54AC299J or SN54AC299FK for equivalent functional performance. Verify pin compatibility and electrical parameters against the original datasheet. Ensure any substitute maintains the required military temperature rating and ceramic package construction.