SN74LS258BN

Overview

The SN74LS258BN is a quad 2-line to 1-line data selector/multiplexer with 3-state outputs from the Texas Instruments SN74LS series. It operates within a supply voltage range of 4.75 V to 5.25 V and features a propagation delay of 21 ns. The device supports a maximum load capacitance of 45 pF and functions at temperatures between 0°C and +70°C. It is housed in a 16-pin PDIP package.

Feature Summary

• Integrates four independent multiplexers for parallel signal routing
• Provides high-impedance 3-state outputs for bus line isolation
• Compatible with standard TTL logic input levels

Applications

• Data routing in digital communication systems
• Address decoding circuits
• Signal selection in microprocessor interfaces

Procurement Notes

Verify the specific suffix 'BN' against official manufacturer documentation to confirm pinout compatibility and package dimensions. Ensure the component meets required RoHS standards and operating temperature ranges for the intended application environment before finalizing procurement.

Selection Notes

Select this component when multiple data sources require selection onto a single output line using 3-state control. It serves as a direct replacement for other LS-series multiplexers where low power consumption and TTL compatibility are prioritized over higher speed performance metrics.

Part Context

This part belongs to the SN74LS family, known for low-power Schottky TTL technology. It shares functional similarities with the SN74ALS258 but offers lower speed characteristics. The device is designed for general-purpose digital logic applications requiring reliable data switching capabilities.

Replacement Considerations

The SN74LS258BD is a surface-mount equivalent offering identical electrical functionality in an SOIC package. Verify pin compatibility if transitioning between through-hole and surface-mount technologies.