74ACT258SCX

Signal Switches, Multiplexers, Decoders Overview

The Fairchild Semiconductor 74ACT258SCX is a quad 2-input multiplexer featuring 3-STATE outputs, housed in a 16-pin SOIC package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports output currents of 24 mA for both high and low states. The device utilizes a single supply configuration with a maximum load capacitance of 50 pF. This component belongs to the ACT series, providing TTL-compatible inputs for bus-oriented applications.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexing capability allowing selection between two data sources
• 3-STATE outputs designed for efficient bus-oriented system architectures
• TTL-compatible input logic levels ensuring broad interface compatibility

Signal Switches, Multiplexers, Decoders Applications

• Bus-oriented data routing systems
• Digital signal selection circuits
• Multiplexed data transmission interfaces

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify component authenticity as this part is marked obsolete by Fairchild Semiconductor. Confirm package integrity and pin alignment against the 16-SOIC specification. Check manufacturing date codes for age-related degradation. Ensure replacement strategies are evaluated due to discontinuation status before finalizing procurement plans.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when quad 2:1 multiplexing with tri-state outputs is required for 5V logic systems. Consider the ACT series speed and power characteristics relative to standard AC or HC families. Verify that the 16-SOIC footprint matches the target PCB layout constraints and thermal requirements for the specific application environment.

Signal Switches, Multiplexers, Decoders Part Context

This integrated circuit is part of the Fairchild 74ACT logic family, which combines the high-speed performance of AC devices with CMOS low-power consumption. The 74ACT258 specifically addresses the need for multiple independent multiplexers within a single package, facilitating compact digital design solutions compared to discrete logic implementations.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is listed as obsolete, alternative sourcing requires identifying compatible equivalents from other manufacturers or evaluating newer generation logic families with similar pinouts and electrical specifications.