SN74LS355DW

Overview

The SN74LS355DW is a high-speed low-power Schottky TTL multiplexer manufactured by Texas Instruments. It features an LS series logic family design optimized for digital signal routing applications. The component utilizes a 20-pin SOIC surface-mount package, providing a compact form factor suitable for dense circuit board layouts. As part of the standard 74LS logic line, it ensures compatibility with existing TTL-based systems while offering improved power consumption characteristics compared to earlier generations.

Feature Summary

• Functions as a multiplexer within the LS series TTL logic family
• Utilizes high-speed low-power Schottky technology for efficient signal processing
• Designed for surface-mount installation in compact electronic assemblies

Applications

• Digital signal routing in TTL-based computer systems
• Data selection and switching in industrial control interfaces
• Address decoding and bus management in legacy computing hardware

Procurement Notes

Verify the specific manufacturer source and authenticity when sourcing this component, as availability may vary across distributors. Confirm that the received unit matches the exact SN74LS355DW designation to ensure correct logic family compatibility. Check for any obsolescence notices or lifecycle status updates from Texas Instruments prior to final procurement decisions.

Selection Notes

Select this component when a TTL-compatible multiplexer is required for legacy system maintenance or retro-computing projects. Ensure the design environment supports LS series voltage levels and current drive requirements. Consider the SOIC-20 package constraints during PCB layout planning to guarantee proper thermal dissipation and mechanical fit within the target enclosure.

Part Context

This device belongs to the broader SN74LSxx series of logic integrated circuits produced by Texas Instruments. The SN74LS355 specifically addresses multiplexing needs within this lineage, distinguishing itself from latches or decoders found in other model numbers. It represents a segment of the company's long-standing portfolio dedicated to standard digital logic functions for general-purpose electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other SN74LS355 variants or compatible TTL multiplexers through official datasheet cross-referencing before implementation.