SN74LVC139ADGVR

Overview

The SN74LVC139ADGVR 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 supports an operating temperature range of -40 °C to +85 °C. The device features fully buffered inputs that accept voltages up to 5.5 V, enabling compatibility with 3.3-V or 5-V driving circuits. It provides a maximum propagation delay of 6.2 ns at 3.3 V and includes ESD protection exceeding 2000 V per the human-body model.

Feature Summary

• Dual independent 2-line to 4-line decoding and demultiplexing functionality
• Fully buffered inputs compatible with 3.3-V and 5-V logic levels
• Active-low enable inputs suitable for data line utilization in demultiplexing

Applications

• Mixed 3.3-V/5-V system environments requiring signal translation
• Address decoding for memory or peripheral selection
• Demultiplexing data streams using active-low enable inputs

Procurement Notes

Verify the specific suffix 'DGVR' corresponds to the TVSOP-16 package and tape-and-reel packaging configuration. Confirm RoHS compliance and lead finish specifications match project requirements. Ensure the ordering part number matches the exact functional variant intended for production deployment.

Selection Notes

Select this component when dual independent decoders are required within a single package footprint. The LVC series offers low power consumption and high-speed operation suitable for portable applications. Verify input voltage tolerance if interfacing directly with 5-V legacy systems without external level shifting.

Part Context

This device belongs to the SN74LVC139A family of dual decoders. The 'DGV' suffix indicates the TVSOP plastic small-outline package, while 'R' denotes reel-based carrier packaging. It is a standard catalog product designed for general-purpose digital logic applications.

Replacement Considerations

SN74LVC139APWR (TSSOP-16 package)

FAQ

Can the enable inputs function as data lines?

Yes, the active-low enable (G) inputs can be utilized as data lines specifically for demultiplexing applications.

What is the maximum input voltage supported?

The inputs accept voltages up to 5.5 V, allowing direct interfacing with 5-V devices despite lower supply voltage operation.