JD54LS253BEA

Overview

The JD54LS253BEA is a dual four-input multiplexer manufactured by National Semiconductor. It belongs to the 54LS series of logic devices, designed for military-grade performance with extended temperature ranges. The component features tri-state outputs, allowing multiple data selectors to be connected to a common bus without interference. It operates on a nominal 5V supply and utilizes LS-TTL technology to provide high-speed switching capabilities suitable for complex digital signal routing applications.

Feature Summary

• Dual independent four-input multiplexing architecture
• Tri-state output capability for bus isolation
• Military-grade reliability with wide operating temperature range
• LS-TTL technology for high-speed data selection

Applications

• Military communication systems requiring reliable signal routing
• Data acquisition systems utilizing bus-oriented architectures
• Industrial control units needing isolated data path selection
• Avionics subsystems demanding high-reliability logic components

Procurement Notes

Verify the manufacturer origin carefully, as National Semiconductor's logic assets were acquired by Texas Instruments. Confirm that the specific suffix 'BEA' corresponds to the required ceramic package and military temperature rating. Ensure compatibility with existing 5V logic levels and check for any obsolescence notices from current authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when dual independent 4-to-1 multiplexing is required in harsh environments. The 54-series designation indicates suitability for military specifications compared to commercial 74-series equivalents. Consider the ceramic package for superior thermal stability and radiation hardness if applicable. Verify pinout compatibility with legacy designs using standard DIP or flatpack footprints.

Part Context

This device is part of the broader 54LS family of logic integrated circuits produced by National Semiconductor. The 54-series typically denotes components qualified for military standards, offering wider voltage and temperature tolerances than commercial variants. The LS prefix indicates Low-power Schottky TTL technology, balancing power consumption with switching speed.

Replacement Considerations

Direct substitutes include the 54LS253 from other manufacturers adhering to MIL-spec standards. Verify pin compatibility and electrical characteristics against the original datasheet. Consider the 54F253 for faster switching speeds if power constraints allow. Always validate functional equivalence before implementation.