SN74LV139ADGVR

Overview

The SN74LV139ADGVR is a dual 2-line to 4-line decoder/demultiplexer from the Texas Instruments 74LV series. It operates on a single power supply ranging from 2V to 5.5V and features two enable inputs to simplify cascading or data reception. The device incorporates Ioff circuitry to support partial-power-down mode, preventing damaging current backflow when powered down. Designed for high-speed memory decoders and data-transmission systems, it offers a maximum propagation delay of 7.5ns at 5V. It is housed in a 16-pin TVSOP package.

Feature Summary

• Supports mixed-mode voltage operation across all ports
• Incorporates Ioff circuitry for partial-power-down applications
• Features fully buffered inputs representing only one normalized load

Applications

• High-performance memory decoding
• Data-routing applications requiring short propagation delays
• Data-transmission systems

Procurement Notes

Verify that the ordering suffix 'DGVR' corresponds to the TVSOP-16 package with tape-and-reel carrier. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings against the latest TI Package Option Addendum before procurement. Ensure the specific revision matches design requirements.

Selection Notes

Select this component for designs requiring low-voltage logic compatibility within the 2V to 5.5V range. The dual-channel architecture allows for efficient space utilization in systems needing multiple decoding functions. Verify input transition rates against recommended operating conditions to ensure signal integrity.

Part Context

This part belongs to the SN74LV139A family of dual decoders/demultiplexers. It shares functional specifications with variants such as SN74LV139ADR and SN74LV139APWR, differing primarily in packaging style. The device is designed to minimize system decoding effects in high-speed memory environments.

Replacement Considerations

SN74LV139ADR (SOIC-16), SN74LV139APWR (TSSOP-16). Verify pinout compatibility and package dimensions before substitution.