SN74LS258BDR2

Overview

The SN74LS258BDR2 is a quad 2-to-1 data selector/multiplexer from the LS logic series, manufactured by Motorola. It features four independent multiplexing circuits in a single package. The device provides inverted outputs with three-state capability for bus-oriented applications. It operates within a supply voltage range of 4.75 V to 5.25 V and supports surface mount installation in a 16-pin SOIC package. The component is designed for commercial temperature ranges.

Feature Summary

• Integrates four independent 2-input to 1-output multiplexing channels
• Provides inverted logic outputs for signal routing
• Includes three-state output control for bus isolation
• Supports surface mount technology in a compact 16-pin form factor

Applications

• Data selection in digital communication systems
• Bus-oriented memory addressing circuits
• Signal routing in microprocessor interfaces
• Logic level translation modules

Procurement Notes

Verify the manufacturer origin carefully, as this part number is associated with both Texas Instruments and Motorola specifications. Confirm the suffix 'R2' indicates tape and reel packaging if required for automated assembly. Ensure the specific datasheet matches the intended voltage and temperature requirements for your design.

Selection Notes

Select this component when multiple independent 2-to-1 signal paths are required with high-impedance output states. The LS series offers standard TTL compatibility. Consider the inverted output polarity during schematic design. Verify that the 16-pin SOIC footprint aligns with the PCB layout constraints.

Part Context

This device belongs to the SN74LS258 family of quadruple multiplexers. It shares functional similarities with other LS-series selectors but is distinguished by its specific three-state and inverted output configuration. The part is widely used in legacy digital designs requiring reliable data switching capabilities.

Replacement Considerations

The SN74LS258BD serves as a direct pin-compatible alternative from Texas Instruments. Other LS-series quad multiplexers may require logic inversion adjustments due to non-inverted output variations.