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DM54LS283J-MLS is listed in the Specialty Logic range at ChipApex. The manufacturer field lists National Semiconductor. Its product description is ADDER/SUBTRACTOR, LS SERIES, 4-B. Review the specifications below when checking this part for your BOM.
The DM54LS283J-MLS is a binary full adder with fast carry, belonging to the National Semiconductor 54LS series. It features a 4-bit arithmetic circuit architecture housed in a 16-pin ceramic dual in-line package (CDIP). The device operates within a supply voltage range of 4.5V to 5.5V and supports an extended industrial temperature range from -55°C to +125°C. Designed for high-speed digital applications, it provides complementary outputs and includes fast carry propagation capabilities to minimize delay in multi-bit addition operations.
Verify the specific suffix J-MLS against official National Semiconductor documentation to confirm the ceramic DIP package and military-grade temperature rating. Ensure compatibility with existing 54LS series power supplies and signal levels. Cross-reference pinouts with current datasheets as legacy components may have revision differences. Confirm RoHS status and material composition requirements for your specific assembly process before ordering.
Select this component when designing systems that require precise 4-bit addition with minimal carry delay in extreme thermal conditions. The 54LS series offers lower power consumption than standard TTL while maintaining compatible speeds. Consider the CDIP package for superior thermal dissipation and mechanical robustness compared to plastic variants. Ensure board layout accommodates the specific pin spacing and lead form factors associated with ceramic DIP packages.
This part belongs to the National Semiconductor 54LS family, which was designed for military and industrial applications requiring wider temperature ranges than commercial parts. The 54LS designation indicates Low-power Schottky logic technology, providing a balance between speed and power efficiency. As a legacy component, it represents a standard solution for discrete arithmetic functions in established defense and aerospace electronic architectures.
Direct substitutes include other 54LS283 variants from National Semiconductor or Texas Instruments. Verify pinout compatibility with generic 54LS283 equivalents if sourcing from alternative manufacturers. Ensure replacement parts maintain the same ceramic package style and temperature rating if environmental constraints are critical.
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