SN74LS153MEL

Overview

The SN74LS153MEL is a dual 4-input multiplexer fabricated using ON Semiconductor's low-power Schottky (LSTTL) process. It integrates two independent 4-line to 1-line data selectors within a single package, featuring common binary address select inputs and individual active-low enable inputs for each multiplexer section. The device provides true, non-inverting outputs. This architecture allows the selection of one bit from four data sources per section or the generation of any two functions of three variables.

Feature Summary

• Dual independent 4-to-1 multiplexing sections with shared address decoding
• Low-power Schottky fabrication for high-speed operation and TTL compatibility
• Individual active-low enable controls for each multiplexer channel
• True non-inverting output logic states

Applications

• Data routing in digital communication systems
• Implementation of combinational logic functions of three variables
• Address decoding in memory mapping circuits
• General-purpose data selection in microprocessor interfaces

Procurement Notes

Verify the specific suffix 'MEL' against the manufacturer's official datasheet to confirm military-grade qualification, lead frame material, and traceability requirements. Ensure the ordering part number matches the exact package style and temperature range specified in the current ON Semiconductor documentation before procurement.

Selection Notes

Select this component when dual independent data paths are required within a single LSTTL footprint. It serves as a direct functional replacement for other manufacturers' 74LS153 equivalents. Verify that the system voltage levels align with standard TTL specifications and that the input clamp diodes are sufficient for the application's termination conditions.

Part Context

This device belongs to the 74LS series of integrated circuits, characterized by low-power Schottky technology. It is functionally equivalent to the Motorola SN74LS153 and Texas Instruments SN74LS153. The 'MEL' suffix typically denotes a military lot or specific packaging variant, distinguishing it from commercial grade parts while maintaining identical logical functionality.

Replacement Considerations

Compatible substitutes include SN74LS153D (ON Semiconductor), SN74LS153N (Texas Instruments), and MC74LS153P (Motorola). These parts share identical pinouts and logical truth tables. Verify that the substitute package type matches the PCB footprint and that the operating temperature range meets the design requirements.