SN74HC258N

Overview

The SN74HC258N is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs manufactured by Texas Instruments. It belongs to the HC logic family and operates within a supply voltage range of 2 V to 6 V. The device features four independent multiplexers controlled by common address select (A/B) inputs and an active-low strobe (G) input. Outputs are inverted, providing high-current drive capabilities suitable for interfacing with LSTTL loads.

Feature Summary

• Provides bus interface functionality from multiple sources in high-performance systems
• Features 3-state outputs that force a high-impedance state when the output-enable input is high
• Contains four identical 2-input multiplexers sharing common control lines

Applications

• Bus-oriented system signal routing
• Data selection between two sources
• High-performance system bus interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum. Confirm RoHS compliance status and lead finish details such as NIPDAU. Ensure the package type matches the required PCB footprint and check the moisture sensitivity level rating before procurement.

Selection Notes

Select this component for applications requiring inverted data path signals. Compare propagation delay specifications at the target operating voltage against the SN74HC257 if non-inverted outputs are needed. Verify that the 3-state output impedance meets the load requirements of the destination circuitry.

Part Context

This part is part of the SNx4HC257/258 series, which includes pin-compatible variants with non-inverted outputs. It is designed for use in digital logic circuits where signal multiplexing and bus isolation are required. The PDIP-16 package allows for through-hole mounting on standard printed circuit boards.

Replacement Considerations

SN74HC257N provides equivalent multiplexing functionality with non-inverted outputs.