CD74HC139M

Signal Switches, Multiplexers, Decoders Overview

The CD74HC139M is a high-speed CMOS logic device manufactured by Texas Instruments, classified as a dual 2-to-4-line decoder/demultiplexer. It integrates two independent decoding circuits within a single package, designed for applications requiring memory address decoding or data routing. The component operates with fully buffered inputs and supports a wide supply voltage range of 2 V to 6 V. It features low power consumption characteristics typical of CMOS technology while maintaining speed comparable to low-power Schottky TTL logic.

Signal Switches, Multiplexers, Decoders Feature Summary

• Integrates two independent 2-to-4 line decoders or demultiplexers in a single package
• Features fully buffered inputs that represent only one normalized load for driving circuits
• Supports active-low enable inputs that can function as data lines in demultiplexer applications
• Designed specifically for high-speed memory decoding and data transmission systems

Signal Switches, Multiplexers, Decoders Applications

• Memory address decoding in computer systems
• Data routing and distribution networks
• High-speed data transmission systems
• General-purpose digital logic decoding

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout compatibility and electrical specifications. Ensure the selected variant matches the required operating temperature range and packaging style for your design. Cross-reference the manufacturer part number with authorized distributors to confirm current availability and authenticity before procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a dual 2-to-4 decoding solution is required in a compact form factor. Consider the HC series for its balance of speed and low power consumption compared to standard TTL alternatives. Verify that the input voltage levels are compatible with the driving logic family used in the system design.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the Texas Instruments CD74HC series of high-speed CMOS logic components. It is functionally related to other decoders like the CD74HC138 but offers a different output configuration suitable for distinct addressing schemes. The product line emphasizes performance improvements over older logic families while maintaining backward compatibility with standard logic interfaces.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The CD74HC139E is listed as a manufacturer-recommended alternative. Verify pinout and electrical parameters before substitution.