SN74HC258D

Overview

The SN74HC258D is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs, manufactured by Texas Instruments in a 16-pin SOIC package. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of -40°C to 85°C. The device features inverted outputs and utilizes a common address select input for channel selection. Key electrical characteristics include a typical propagation delay of 12 ns at 5 V, high-current output drive capability up to 15 LSTTL loads, and low power consumption with a maximum ICC of 80 µA.

Feature Summary

• Provides four independent multiplexers controlled by a single address select input
• Features 3-state outputs that interface directly with system buses
• Inverts the selected data path from source inputs to outputs

Applications

• Bus interface systems connecting multiple data sources
• High-performance digital logic routing
• Data selector circuits requiring bus isolation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum. The 'D' suffix indicates a standard SOIC package; confirm if active production status applies to this exact part number or if a tape-and-reel variant (e.g., DR) is required for automated assembly. Ensure compliance with RoHS standards and check for any recent product change notifications affecting material composition or lead finish.

Selection Notes

Select the SN74HC258D when inverted data paths are required for multiplexing applications. Compare against the SN74HC257 if non-inverted outputs are needed, as both share identical pinouts and control logic. Consider the HC series speed and voltage compatibility with existing CMOS logic families. Verify thermal resistance requirements for the SOIC package relative to the expected ambient temperature and power dissipation limits.

Part Context

This component belongs to the SNx4HC25x family of high-speed silicon-gate CMOS devices. It is designed to be pin-compatible with low-power Schottky TTL (LSTTL) logic, facilitating integration into legacy systems while offering improved power efficiency. The device is part of Texas Instruments' extensive portfolio of standard logic ICs, supporting various packaging options including SOIC, PDIP, and TSSOP.

Replacement Considerations

SN74HC257D provides equivalent functionality with non-inverted outputs.