DM54LS151W/883

Overview

The DM54LS151W/883 is an 8-line to 1-line data selector and multiplexer manufactured by National Semiconductor. It belongs to the LS Series TTL logic family and is housed in a 16-lead ceramic flatpack package. The device operates with a nominal supply voltage of 5 V and supports a wide temperature range from -55 °C to 125 °C. Key electrical characteristics include a maximum output current of 4 mA for low state and 400 µA for high state, with a propagation delay of approximately 11 ns at nominal supply.

Feature Summary

• Provides 8-to-1 data selection capability using three address inputs
• Constructed using Low-power Schottky TTL technology for enhanced speed and power efficiency
• Designed for military-grade reliability with MIL-STD-883 screening levels
• Features ceramic flatpack packaging suitable for harsh environments

Applications

• Data routing in military communication systems
• Signal selection in aerospace instrumentation
• High-reliability digital logic circuits requiring wide temperature operation

Procurement Notes

Verify that the component carries the correct NSC manufacturer marking and the /883 suffix indicating MIL-STD-883 compliance. Confirm the package type is the 16-lead ceramic flatpack (DFP) and check for physical signs of damage or contamination on the ceramic body. Ensure the part status is reviewed as obsolete, meaning availability may be limited to surplus or stock lots rather than active production channels.

Selection Notes

Select this component when an 8:1 multiplexer with LS-TTL compatibility is required in a ruggedized environment. The ceramic flatpack package offers superior thermal stability and hermetic sealing compared to plastic alternatives. Consider the 5 V supply requirement and the specific current drive capabilities when interfacing with downstream loads. Verify that the operating temperature range meets the system's environmental specifications.

Part Context

This part is part of the DM54 series, which denotes military-grade performance standards. The LS151 designation identifies it as an 8-input multiplexer within the Low-power Schottky family. The /883 suffix signifies adherence to MIL-STD-883 test methods, ensuring higher reliability for defense and space applications compared to commercial variants.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should verify pinout and electrical compatibility if considering alternative manufacturers' equivalents.