SN74AHC138DG4

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC138DG4 is a high-speed CMOS 3-line to 8-line decoder and demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 5.5 V and features low dynamic power consumption. The device utilizes a 16-pin SOIC package and supports an operating temperature range from -40°C to 85°C. It includes three enable inputs for flexible system control and provides balanced output drive characteristics suitable for driving capacitive loads up to 50 pF.

Signal Switches, Multiplexers, Decoders Feature Summary

• High-speed CMOS technology ensures low dynamic power consumption while maintaining fast switching speeds.
• Three dedicated enable inputs allow precise control over device activation and system synchronization.
• Balanced output drive characteristics support reliable operation with standard capacitive loads.

Signal Switches, Multiplexers, Decoders Applications

• Address decoding for memory and I/O mapping in embedded systems
• Demultiplexing data streams in communication interfaces
• Control logic for peripheral selection in industrial automation

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix DG4 indicates lead-free construction and compliance with RoHS directives. Confirm the package variant matches the required 16-SOIC footprint dimensions. Ensure the component meets the specified industrial temperature range if deployed in harsh environments. Cross-reference the manufacturer part number against official datasheets to validate authenticity and revision status before integration into production designs.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 3-to-8 line decoding function is required with low power consumption and wide voltage compatibility. The AHC series offers superior speed compared to standard HC logic while maintaining CMOS input characteristics. Consider the 16-SOIC package for surface-mount assembly requirements. Verify that the three enable inputs align with the system's control signal architecture.

Signal Switches, Multiplexers, Decoders Part Context

This component belongs to the SN74AHC138 family of decoders and demultiplexers. It serves as a digital logic solution for converting binary codes into active-low outputs. The device is designed for general-purpose applications requiring efficient address decoding or data distribution. It complements other logic families by providing enhanced performance at lower voltages.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHCT138DG4: Compatible alternative with TTL-compatible input thresholds instead of CMOS levels, maintaining the same package and functionality.