MM54HC533J/883

Latches Overview

The MM54HC533J/883 is a high-speed CMOS octal transparent latch with 3-state outputs, manufactured by National Semiconductor (now Texas Instruments). It features a ceramic dual in-line package (DIP) with 20 pins. The device operates within a supply voltage range of 2V to 6V and supports a military temperature range from -55°C to 125°C. It complies with MIL-STD-883 Class B screening requirements, ensuring reliability for harsh environments.

Latches Feature Summary

• Octal configuration provides eight independent data latching channels
• Transparent latch design allows direct data passage when enabled
• Three-state output capability enables bus-driven system architectures
• Military-grade ceramic packaging ensures durability under extreme conditions

Latches Applications

• Military aerospace data acquisition systems
• Harsh environment industrial control interfaces
• High-reliability communication equipment buffers
• Spacecraft telemetry data storage modules

Latches Procurement Notes

Verify the specific screening level indicated in the part marking, as MIL-STD-883 offers multiple classes. Confirm that the supplier provides traceable documentation for the ceramic package integrity and lead finish compliance. Ensure the component matches the original National Semiconductor manufacturing specifications rather than generic equivalents.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is required for military or space applications. The HC-CMOS technology offers low power consumption compared to older TTL families. The ceramic DIP package is essential for applications requiring superior thermal cycling resistance and hermetic sealing capabilities.

Latches Part Context

This part belongs to the MM54HC series, which denotes high-speed CMOS logic designed for military specifications. The 'J' suffix indicates a ceramic DIP package, while '/883' signifies compliance with MIL-STD-883 testing standards. This series is distinct from commercial variants due to its extended temperature range and rigorous quality assurance protocols.

Latches Replacement Considerations

Direct replacements include other MM54HC533 variants with identical pinouts and electrical characteristics. Verify that any substitute maintains the same MIL-STD-883 screening class. Commercial grade HC533 devices are not suitable substitutes due to insufficient temperature and reliability ratings.