SN74AS158DR

Overview

The SN74AS158DR is a high-speed Schottky logic device manufactured by Texas Instruments. It functions as a quad 1-of-2 data selector/multiplexer, integrating four independent multiplexing circuits within a single package. The component operates on a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 14 ns. It is housed in a 16-pin SOIC-Narrow surface-mount package and supports an operating temperature range from 0°C to +70°C.

Feature Summary

• Integrates four independent 1-of-2 multiplexers for compact signal routing
• High-speed operation with 14 ns propagation delay characteristic of the AS logic family
• Provides complementary outputs for each multiplexer channel

Applications

• Data routing in high-speed digital systems
• Signal selection in communication equipment
• Multiplexing applications requiring fast switching speeds

Procurement Notes

Verify the specific suffix DR against official Texas Instruments documentation to confirm the reel packaging configuration and ensure compatibility with automated assembly processes. Confirm RoHS compliance status through current manufacturer datasheets prior to procurement integration.

Selection Notes

Select this component when system requirements demand the high switching speeds inherent to the Advanced Schottky (AS) logic family. Ensure the design accommodates the 4.5 V to 5.5 V supply voltage constraints and the thermal characteristics associated with the SOIC-Narrow package for reliable operation.

Part Context

This part belongs to the SN74AS series, which represents Texas Instruments' high-performance Schottky logic line. The SN74AS158 specifically addresses the need for multiple independent data selectors in dense circuit designs, offering faster performance than standard ALS variants while maintaining pin compatibility with legacy 74-series footprints.

Replacement Considerations

SN74ALS158D offers similar functionality with slightly slower speed specifications.