SN74LS158NSR

Overview

The SN74LS158NSR is a quadruple 2-line to 1-line data selector/multiplexer from the Texas Instruments 74LS series. It features four independent multiplexing circuits in a single package, providing efficient digital signal routing. The device operates on a single supply voltage ranging from 4.75 V to 5.25 V. It exhibits a propagation delay time of 14 ns and functions within an operating temperature range of 0°C to +70°C. The component is housed in a 16-SOIC surface-mount package.

Feature Summary

• Contains four independent 2-to-1 multiplexers for parallel data selection
• Provides full on-chip data selection with integrated inverters and drivers
• Supports precise digital signal routing in advanced electronic systems

Applications

• Multiplexing dual data buses
• Generating four functions of two variables where one variable is common
• Source programmable counters
• Precision digital signal routing

Procurement Notes

Verify the NSR suffix indicates tape-and-reel packaging when ordering. Confirm the 74LS logic family compatibility with existing system voltage levels. Ensure the SOIC-16 footprint matches the design layout. Check RoHS compliance status as required by specific project regulations. Validate the operating temperature range against environmental conditions.

Selection Notes

Select this component for applications requiring multiple independent 2-to-1 data paths. Compare propagation delay specifications against other logic families if speed is critical. Consider the 74LS power consumption characteristics relative to system thermal constraints. Verify pinout compatibility with alternative multiplexer packages during PCB redesign phases.

Part Context

This part belongs to the standard 74LS logic family, known for low-power Schottky performance. It serves as a fundamental building block for digital logic designs requiring data routing. The quadruple configuration allows complex switching functions within a compact integrated circuit form factor.

Replacement Considerations

SN74LS158N is a direct leaded equivalent. SN74ALS158D offers faster switching speeds but requires verification of voltage tolerance. SN74HC158D provides CMOS advantages but differs in drive strength and input characteristics.