DM74AS258N

Overview

The DM74AS258N is a high-speed Schottky logic component manufactured by Fairchild Semiconductor. It functions as a 3-state quad 1-of-2 line data selector or multiplexer. The device features four independent multiplexing circuits, each selecting between two input lines based on control signals. It utilizes Advanced Schottky (AS) technology to achieve fast switching speeds and reduced propagation delays. The component is housed in a standard 16-pin Dual In-Line Package (DIP), suitable for through-hole mounting on printed circuit boards.

Feature Summary

• Provides four independent 2-to-1 multiplexing channels within a single integrated circuit
• Features 3-state outputs allowing direct bus interfacing and system expansion
• Utilizes Advanced Schottky semiconductor technology for high-speed signal processing

Applications

• High-speed data bus routing and selection systems
• Digital signal path configuration in computing hardware
• Logic level translation and signal gating applications

Procurement Notes

Verify the obsolete status of this part number with authorized distributors before procurement planning. Confirm package integrity and pin compatibility for legacy board replacements. Check RoHS compliance documentation if environmental regulations apply to the specific manufacturing batch. Ensure supply chain sources provide valid traceability records for critical infrastructure projects.

Selection Notes

Select this component when designing systems requiring multiple independent data paths with low propagation delay. Consider the 3-state output capability for shared bus architectures. Evaluate power consumption requirements against other logic families. Verify voltage levels match the target system's logic thresholds. Assess physical footprint constraints regarding the 16-pin DIP form factor.

Part Context

This device belongs to the 74AS series of high-speed logic components. It serves as a data selector within digital logic families. The part is distinct from similar models like the DM74ALS258N due to its specific speed and power characteristics. It represents a specialized solution for rapid data routing tasks in complex electronic assemblies.

Replacement Considerations

Public confirmed substitute part numbers include DM74ALS258N. Verify electrical compatibility and pinout alignment before substitution. Review datasheet specifications for differences in propagation delay and drive current.