SN74LVC139APWG4

Overview

The SN74LVC139APWG4 is a dual 2-line to 4-line decoder/demultiplexer from the Texas Instruments LVC logic family. It operates within a supply voltage range of 1.65 V to 3.6 V and features active-low enable inputs that function as data lines in demultiplexing applications. The device provides fully buffered inputs compatible with 3.3-V or 5-V driving circuits, facilitating translation in mixed-voltage systems. It is housed in a 16-pin TSSOP package and supports an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Dual independent 2-to-4 decoding or demultiplexing circuits integrated into a single package
• Active-low enable inputs capable of serving as data lines for demultiplexing functions
• Fully buffered inputs designed to represent only one normalized load to the driving circuit
• Input compatibility with both 3.3-V and 5-V devices for mixed-system translation

Applications

• Address decoding in memory architectures
• Data routing and distribution in digital systems
• Demultiplexing control signals in embedded designs
• Logic level translation between 3.3-V and 5-V domains

Procurement Notes

Verify the specific ordering suffix 'G4' indicates lead-free packaging compliant with RoHS standards. Confirm the PW package designation corresponds to the TSSOP form factor. Ensure the component status is listed as active production data before finalizing procurement plans. Cross-reference the datasheet revision date to ensure alignment with current design specifications.

Selection Notes

Select this component when dual independent decoding channels are required within a low-power CMOS environment. The LVC series offers high-speed performance suitable for modern digital interfaces. Verify that the input voltage levels match the source drivers, considering the 5.5-V tolerance allows interfacing with higher voltage logic without external protection.

Part Context

This part belongs to the SN74LVC139A family of decoders and demultiplexers manufactured by Texas Instruments. The 'G4' suffix denotes a lead-free variant produced under specific environmental guidelines. The 'PW' suffix identifies the plastic small-outline package type. This series is designed for general-purpose digital logic applications requiring reliable signal decoding.

Replacement Considerations

SN74LVC139APWR is a direct replacement offering identical functionality in a tape-and-reel format.