CD74HCT139M

Overview

The CD74HCT139M is a high-speed CMOS logic device manufactured by Texas Instruments, functioning as a dual 2-to-4-line decoder or demultiplexer. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an industrial temperature range from -55 °C to +125 °C. The component utilizes a 16-pin SOIC surface-mount package. It features two independent decoding circuits, each with two address inputs and four active-low outputs, controlled by separate enable inputs.

Feature Summary

• Dual independent 2-to-4 line decoding capability
• High-speed CMOS technology for low power consumption
• Industrial temperature range support

Applications

• Memory address decoding
• Data routing applications
• System control logic

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and environmental compliance. Ensure the ordering part number matches the required pin configuration and operating temperature range specified in the manufacturer datasheet before procurement.

Selection Notes

Select this component when dual independent decoding is required in a compact surface-mount form factor. Verify that the HCT logic family input thresholds are compatible with the driving circuitry voltage levels. Confirm the SOIC package dimensions fit the target PCB layout constraints.

Part Context

This device belongs to the Texas Instruments CD74HCT series of high-speed CMOS logic components. It is functionally similar to other 74HCT139 variants but distinguished by its specific packaging and manufacturing revisions. It serves as a standard solution for digital decoding tasks in mixed CMOS/TTL systems.

Replacement Considerations

CD74HCT139M96E4