54F280J-MLS

Overview

The 54F280J-MLS is a 9-bit parity generator and checker from the F/FAST TTL series, manufactured by National Semiconductor. It features complementary outputs for both even and odd parity generation or checking. The device operates within a voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -55°C to 125°C. It is housed in a 14-pin ceramic dual in-line package (CDIP) with a width of 0.300 inches (7.62 mm). The component draws 1 mA current and provides 20 mA output drive capability.

Feature Summary

• Performs 9-bit parity generation and checking functions
• Provides complementary outputs for even and odd parity states
• Operates across extended military-grade temperature ranges
• Utilizes standard TTL logic family characteristics

Applications

• Data transmission systems requiring error detection
• Memory modules utilizing parity checking protocols
• Industrial control systems operating in harsh environments
• Military aerospace electronic circuits

Procurement Notes

Verify the specific suffix J-MLS against official National Semiconductor documentation to confirm the ceramic DIP package and military temperature rating. Ensure compatibility with existing 5V TTL logic levels. Cross-reference datasheets for exact pin configurations and electrical limits before integration into final designs.

Selection Notes

Select this component when 9-bit parity processing is required in high-reliability applications. The CDIP package suits through-hole mounting for robust mechanical connections. Consider the extended temperature range if the environment exceeds commercial limits. Verify that the complementary output requirement aligns with downstream logic inputs.

Part Context

This part belongs to the 54F series of fast TTL logic devices produced by National Semiconductor, now part of Texas Instruments. The 54-series designation typically indicates military-grade specifications compared to the commercial 74-series equivalents. The 54F280 specifically addresses parity handling needs in digital data paths.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence with other 54F280 variants only if official cross-reference data confirms identical pinouts and electrical characteristics.