DM54LS253J/883

Overview

The DM54LS253J/883 is a dual 4-input multiplexer belonging to the LS-TTL logic family. It features two independent 4-to-1 data selectors with true outputs, housed in a 16-pin ceramic dual in-line package (CDIP). The device operates at a nominal supply voltage of 5 V, with a maximum power supply current of 8 mA and a maximum operating frequency of 30 MHz. It supports an extended temperature range from -55 °C to 125 °C and meets MIL-STD-883 Class C screening requirements.

Feature Summary

• Dual independent 4-to-1 data selection functionality
• True output configuration for direct signal routing
• High-speed LS-TTL technology supporting up to 30 MHz operation
• Military-grade ceramic packaging for harsh environment reliability

Applications

• Data routing in military communication systems
• Signal selection in aerospace instrumentation
• Address decoding in industrial control units
• Multiplexing sensor inputs in defense electronics

Procurement Notes

Verify that the component carries the full DM54LS253J/883 marking, including the J suffix indicating ceramic DIP construction and /883 denoting MIL-STD-883 compliance. Confirm MIL-STD-883 Class C screening documentation is provided. Ensure the manufacturer is National Semiconductor or authorized successor TI. Check for lead integrity and ceramic package seal quality to guarantee environmental resistance.

Selection Notes

Select this part when dual independent multiplexing is required in high-reliability applications. The ceramic package provides superior thermal and mechanical stability compared to plastic variants. Verify that the 5 V TTL logic levels match the system interface. Consider the 30 MHz speed limit for signal processing requirements. Ensure the extended temperature range covers the operational environment.

Part Context

This component is part of the DM54 series, which denotes military-grade performance standards. The LS prefix indicates Low-power Schottky TTL technology, balancing speed and power consumption. The /883 suffix confirms adherence to MIL-STD-883 test methods. National Semiconductor developed this line for rugged electronic systems requiring long-term reliability and consistent electrical characteristics under extreme conditions.

Replacement Considerations

Publicly confirmed substitutes include other DM54LS253 variants with identical pinouts and specifications. Verify that any replacement maintains the ceramic package and MIL-STD-883 Class C screening. Cross-reference datasheets to ensure functional equivalence in dual 4-to-1 multiplexing operations.