SN74HC258NS

Overview

The SN74HC258NS is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It features four independent multiplexers with three-state outputs, housed in a 16-pin Small Outline (SO) package. The device operates within a supply voltage range of 2 V to 6 V and supports a wide operating temperature range from -40°C to +85°C. Key electrical characteristics include a propagation delay of 13 ns at 4.5 V and low static power consumption typical of HC logic families.

Feature Summary

• Integrates four independent 2-to-1 multiplexers for efficient data routing
• Provides three-state outputs to facilitate bus-oriented systems
• Supports wide supply voltage operation for flexible system integration
• Features low static power consumption suitable for battery-powered applications

Applications

• Bus-oriented memory addressing
• Data routing in communication systems
• I/O expansion in microcontroller interfaces
• Signal selection in test equipment

Procurement Notes

Verify the specific suffix 'NS' against the manufacturer's official ordering information to confirm the package type and tape/reel specifications. Ensure that the requested quantity aligns with standard packaging configurations defined in the datasheet. Cross-reference the date code and lot number upon receipt to maintain traceability and quality standards for production environments.

Selection Notes

Select this component when designing circuits requiring multiple independent signal paths with high-impedance states. Consider the HC series performance metrics regarding speed and power dissipation relative to alternative logic families. Evaluate the physical footprint constraints of the SOIC-16 package against available board space and thermal management requirements for the target application environment.

Part Context

This part belongs to the SN74HCxx series of high-speed CMOS logic devices. It complements other multiplexers like the SN74HC157 and demultiplexers such as the SN74HC138 within the same logic family. The device shares pinout compatibility with similar TTL-equivalent functions while offering improved switching speeds and lower power consumption characteristic of modern CMOS technology.

Replacement Considerations

• SN74HC258N
• SN74HC258DR

FAQ

What is the function of the output enable inputs?

The output enable inputs control the three-state condition of the outputs, allowing them to be disconnected from the bus when not selected.

How does the propagation delay vary with supply voltage?

Propagation delay decreases as the supply voltage increases; it is specified at 13 ns for a 4.5 V supply.