SN74S138AD

Signal Switches, Multiplexers, Decoders Overview

The SN74S138AD is a Schottky TTL 3-line to 8-line decoder/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range of 0°C to 70°C. The device features three address inputs and eight active-low outputs, controlled by three enable inputs. It is housed in a 16-pin Small Outline Integrated Circuit (SOIC) package with a maximum height of 2.00 mm. The component complies with RoHS standards and utilizes NIPDAU lead finish.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides decoding or demultiplexing functions using three binary address lines to select one of eight active-low outputs
• Incorporates three enable inputs that must be properly configured for the device to activate
• Utilizes Schottky TTL technology to achieve high-speed switching performance

Signal Switches, Multiplexers, Decoders Applications

• Address decoding for memory architectures
• Demultiplexing data streams in digital logic circuits
• Control signal generation in industrial systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix to confirm the package type and environmental compliance status. Confirm the lead finish designation matches assembly requirements. Ensure the operating temperature grade aligns with the intended application environment. Cross-reference the manufacturer part number against current availability lists to verify production status.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when Schottky TTL speed characteristics are required for 3-to-8 line decoding tasks. Consider the SOIC package dimensions for surface mount layout constraints. Evaluate the power dissipation limits relative to the system thermal design. Compare enable input configurations against existing control logic levels.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the SN74S series of high-speed Schottky TTL logic components. It serves as a functional equivalent to other industry-standard 3-to-8 decoders within the same logic family. The SN74S138AD provides a robust solution for applications requiring fast propagation delays and reliable operation in standard commercial environments.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74S138AN