SN74ALS158N

Overview

The SN74ALS158N is a quad 1-of-2 data selector/multiplexer from the Texas Instruments ALS logic family. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 14 ns. The device supports four independent circuits, each with two inputs and one output, packaged in a 16-pin DIP configuration. It functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates four independent multiplexers for parallel data routing
• Provides high-speed signal selection with low propagation delay
• Compatible with standard TTL logic levels

Applications

• Data routing in digital systems
• Signal selection in measurement equipment
• Address decoding applications

Procurement Notes

Verify the package type matches the required through-hole mounting style. Confirm the suffix indicates the standard plastic DIP variant. Check RoHS compliance status if environmental regulations apply to the specific manufacturing batch. Ensure the operating temperature range meets system requirements.

Selection Notes

Select this component when multiple independent 2-to-1 data paths are required in a single package. The ALS series offers improved speed over standard 74LS devices while maintaining similar power consumption characteristics. Verify pin compatibility if replacing older logic families in existing designs.

Part Context

This part belongs to the SN74ALS158 series, which includes variants with different packaging options such as SOIC or TSSOP. The 'N' suffix specifically denotes the 16-lead dual in-line package suitable for breadboard or PCB through-hole assembly. It serves as a functional equivalent to other industry-standard quad multiplexers within the same logic family constraints.

Replacement Considerations

SN74ALS158D (SOIC package), SN74ALS157A (non-inverting outputs)