SN74LVC139ARGYR

Overview

The SN74LVC139ARGYR is a dual 2-line to 4-line decoder/demultiplexer from the Texas Instruments 74LVC 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 a maximum propagation delay of 6.2 ns at 3.3 V with a 50 pF load. It provides high-level output currents up to -24 mA and low-level output currents up to 24 mA at 3 V. Inputs accept voltages up to 5.5 V, enabling compatibility with 5-V driving devices.

Feature Summary

• Contains two independent 2-line to 4-line decoders or demultiplexers in a single package
• Features fully buffered inputs that represent only one normalized load to the driving circuit
• Active-low enable (G) input functions as a data line for demultiplexing applications
• Provides ESD protection exceeding JESD 22 specifications

Applications

• Mixed 3.3-V/5-V system environments requiring signal translation
• Address decoding for memory and I/O chip select
• Demultiplexing data streams using the active-low enable input
• High-speed digital logic interfacing

Procurement Notes

Verify the specific ordering suffix 'RGYR' corresponds to the VQFN package with a Reel of 3000 units. Confirm RoHS compliance and lead finish details via the latest TI Package Option Addendum. Ensure the moisture sensitivity level rating aligns with your assembly timeline requirements.

Selection Notes

Select this component when a compact solution for dual address decoding or data routing is required. The LVC series offers lower power consumption compared to older logic families while maintaining high-speed performance. Verify that the 1.65 V to 3.6 V supply range matches your system's power rails and that the 5.5 V tolerant inputs are necessary for your interface design.

Part Context

This part belongs to the SN74LVC139A family of dual 2-line to 4-line decoders. It is functionally equivalent to other variants in the series but differs in packaging. The RGY suffix indicates a Plastic Quad Flatpack-No Lead (VQFN) package, which is distinct from SOIC, TSSOP, or SSOP options available for the same logical device.

Replacement Considerations

SN74LVC139ADBR

FAQ

Can the SN74LVC139ARGYR be used to translate signals between 3.3-V and 5-V systems?

Yes, the inputs can accept voltages up to 5.5 V, allowing them to be driven directly by 5-V devices while operating the device itself at 3.3 V.

What is the function of the G input in this device?

The active-low enable (G) input allows the device to function as a demultiplexer by acting as a data line, in addition to its standard decoder enable role.