MC74AC138MR1

Signal Switches, Multiplexers, Decoders Overview

The MC74AC138MR1 is a high-speed CMOS 3-to-8 line decoder/demultiplexer manufactured by onsemi. It operates within a supply voltage range of 2 V to 6 V and features low input current. The device is housed in an SOIC-16 surface-mount package with a wide operating temperature range from -40°C to +85°C. It belongs to the 74AC logic family, providing fast switching speeds suitable for various digital applications requiring address decoding or data distribution.

Signal Switches, Multiplexers, Decoders Feature Summary

• High-speed CMOS technology ensures rapid signal propagation and efficient power consumption.
• Wide operating voltage range supports compatibility with diverse system power supplies.
• Surface-mount packaging facilitates automated assembly and compact circuit board designs.

Signal Switches, Multiplexers, Decoders Applications

• Address decoding for memory and I/O port selection
• Data distribution in multiplexed systems
• Digital control logic circuits

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix MR1 against official datasheets to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status as manufacturing processes may vary. Check for obsolescence notices or lifecycle changes directly from onsemi documentation before procurement planning.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 3-to-8 decoder is required in a surface-mount design. Ensure the system voltage falls within the 2 V to 6 V operational window. Compare pinout and electrical characteristics with alternative packages like DIP or TSSOP if space constraints differ.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC series of decoders and demultiplexers. It shares functional similarities with other variants such as MC74AC138N or MC74AC138D, differing primarily in packaging and reel configuration. The AC series offers improved speed over standard 74LS counterparts while maintaining CMOS low-power advantages.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Cross-reference with MC74AC138DR2G or MC74AC138D for similar functionality in different packaging formats. Verify that substitute parts match the 3-to-8 decoding function and compatible voltage ranges.