SN74LV139APWRG4

Overview

The SN74LV139APWRG4 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 operation, preventing damaging current backflow through the outputs when powered down. Designed for high-speed memory decoders and data-transmission systems, it offers maximum propagation delays of 7.5ns at 5V. The component is housed in a 16-pin TSSOP 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
• Data-transmission systems

Procurement Notes

Verify that the ordering suffix G4 indicates compliance with RoHS standards and specifies lead-free finish options. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range aligns with system requirements. Check for specific material type designations if preproduction status applies.

Selection Notes

Select this component for designs requiring low power consumption and high-speed signal routing. The wide supply voltage range allows compatibility with various logic families. Verify input transition rates against the recommended operating conditions to ensure proper functionality. Consider the thermal resistance metrics for adequate heat dissipation in dense layouts.

Part Context

This part belongs to the SN74LV139A family of dual decoders. It shares functional characteristics with other variants in the series but differs in packaging and environmental compliance markings. The G4 suffix typically denotes specific manufacturing and material specifications within the broader product line.

Replacement Considerations

Direct substitutes include SN74LV139APWRE4 and SN74LV139APWRG4.A. Verify pinout compatibility and electrical specifications before integration.