JM54AC574S2A-RH

Overview

The JM54AC574S2A-RH is an octal D-type flip-flop manufactured by National Semiconductor, designed for space-level logic applications. It features a buffered common Clock (CP) and a buffered common Output Enable (OE). The component operates with a clock frequency of 95 MHz and exhibits a maximum propagation delay of 11ns at 5V with a 50pF load. It supports positive edge triggering and provides output currents of 24mA for both high and low states. The device is housed in a 20-CLCC package.

Feature Summary

• Octal D-type flip-flop architecture with buffered common clock and output enable inputs
• High-speed operation suitable for demanding digital logic environments
• Space-level logic design compliant with military specifications

Applications

• Spacecraft digital data handling systems
• Military-grade electronic control units
• High-reliability memory storage registers

Procurement Notes

Verify the specific suffix 'S2A' against official datasheets to ensure compatibility with required space-level standards. Confirm that the manufacturer designation aligns with current National Semiconductor or Texas Instruments product lines, as legacy components may have undergone organizational transitions. Check for RoHS compliance status if environmental regulations apply to the end-use assembly.

Selection Notes

Select this component when an octal D-type flip-flop with tri-state outputs is required for space-constrained or high-reliability applications. Ensure the system voltage matches the 5V operating requirement and that the 20-CLCC package footprint fits the PCB layout. Consider the 95 MHz clock speed limit when designing timing-critical circuits.

Part Context

This part belongs to the 54AC series of logic devices, which are known for high speed and low power consumption. The 'JM' prefix typically indicates a military or space-grade version of the standard commercial 54AC574. It is distinct from the ACT variant, which offers different electrical characteristics, and the ABT series, which utilizes bipolar technology.

Replacement Considerations

Direct substitutes include the 54AC574 for general logic applications, though space-level qualification may differ. The 54ACT574 serves as a functional alternative with similar pinouts but requires verification of voltage thresholds. Always cross-reference with the latest manufacturer obsolescence notices.