SN74LS158DR

Overview

The SN74LS158DR is a quad 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It belongs to the LS (Low-power Schottky) logic series and is housed in a 16-pin SOIC package. The device features four independent multiplexing circuits, each selecting one of two data inputs based on select lines. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum propagation delay of 30 ns. The component is designed for surface-mount installation and functions reliably within an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates four independent 2-to-1 multiplexers into a single integrated circuit
• Utilizes Low-power Schottky (LS) technology for enhanced speed and reduced power consumption
• Provides inverted outputs for each multiplexed channel

Applications

• Data routing in digital logic systems
• Address decoding applications
• Signal selection in microprocessor interfaces

Procurement Notes

Verify the specific suffix 'DR' indicates the tape-and-reel packaging format when ordering. Confirm that the required operating environment falls within the commercial temperature range of 0°C to +70°C. Ensure the system power supply strictly adheres to the 4.5 V to 5.5 V specification to maintain signal integrity. Cross-reference the datasheet for pinout compatibility with existing PCB layouts.

Selection Notes

Select this component when four independent 2-input multiplexing channels are required in a compact surface-mount form factor. The LS series offers a balance between switching speed and power dissipation suitable for general-purpose TTL logic designs. Consider alternative packages if through-hole mounting is necessary or if wider voltage tolerance is required for industrial environments.

Part Context

This part is part of the SN74LS158 family, which includes variants such as the SN74LS158N (PDIP) and SN74LS158D (SOIC tube). The 'DR' suffix specifically denotes the reel-packaged version of the SOIC-Narrow-16 body style. It serves as a standard solution for implementing multiple small-scale data selection functions within larger digital architectures.

Replacement Considerations

Direct functional equivalents include other SN74LS158 variants like SN74LS158N or SN74LS158D, provided the package type matches the assembly requirements. Verify pin compatibility before substituting.