SN74AHC138RGYR

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC138RGYR is a 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 HVQFN package with dimensions of 4 mm x 4 mm. It supports an operating temperature range from -40°C to +85°C. Key electrical characteristics include a propagation delay of 13 ns at 5 V and output drive capabilities suitable for standard CMOS loads.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides decoding and demultiplexing functions for three binary inputs to eight active-low outputs
• Features three enable inputs for flexible system control and power management
• Designed for low-power applications with high noise immunity typical of AHC logic families

Signal Switches, Multiplexers, Decoders Applications

• Address decoding for memory and I/O mapping in embedded systems
• Demultiplexing data streams in communication interfaces
• Control signal generation for peripheral device selection

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix RGYR corresponds to the 16-pin HVQFN package configuration. Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering part number matches the required tape and reel quantity specifications for surface-mount assembly processes.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a compact 3-to-8 decoder is required for low-voltage digital logic applications. Consider the 2 V to 5.5 V operating range for compatibility with various logic levels. Evaluate the 13 ns propagation delay against system timing requirements to ensure adequate performance margins.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the SN74AHC series, which offers advanced high-speed CMOS technology. The AHC family provides performance comparable to LS TTL but with lower power consumption and wider voltage operation. The RGYR suffix indicates a specific surface-mount package variant optimized for automated PCB assembly.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for SN74AHC138RGYRG4 as a potential lead-free or environmental compliance variant. Verify pinout compatibility before substituting with other 3-to-8 decoders from different manufacturers.