SN74LVC139AZQNR

Overview

The SN74LVC139AZQNR is a dual 2-line to 4-line decoder/demultiplexer from the LVC family. It operates from 1.65 V to 3.6 V with inputs accepting voltages up to 5.5 V. The device features active-low enable inputs usable as data lines, fully buffered inputs representing one normalized load, and latch-up performance exceeding 250 mA per JESD 17. ESD protection exceeds JESD 22 standards. It is housed in a ZQN package (VFBGA) and supports an operating temperature range of -40°C to 85°C.

Feature Summary

• Dual independent 2-to-4 line decoding or demultiplexing functionality within a single package
• Active-low enable inputs that can function as data lines for demultiplexing applications
• Fully buffered inputs compatible with 3.3-V or 5-V driving devices for mixed-voltage translation
• High ESD protection and robust latch-up performance suitable for demanding environments

Applications

• Address decoding in microprocessor systems
• Data routing and distribution in digital logic circuits
• Memory chip select generation
• Peripheral device selection in embedded systems

Procurement Notes

Verify the specific ZQN package variant matches your PCB footprint requirements. Confirm the voltage levels align with your system's I/O standards. Ensure proper handling procedures are followed due to moisture sensitivity. Check for automotive qualification if required for your application environment.

Selection Notes

Select this component when low voltage operation between 1.65 V and 3.6 V is required. Consider its ability to interface with 5-V logic despite lower supply voltages. Evaluate the ZQN package size against available board space. Verify thermal management needs for the chosen operating conditions.

Part Context

This part belongs to Texas Instruments' LVC logic family, designed for low-voltage digital applications. It provides high-speed decoding capabilities while maintaining compatibility with standard logic interfaces. The ZQN package offers a compact solution for space-constrained designs requiring reliable signal routing.

Replacement Considerations

SN74LVC139ARGYR

FAQ

Can the enable inputs be used for data transmission?

Yes, the active-low enable inputs can function as data lines in demultiplexing configurations.

Is the device compatible with 5-V logic signals?

Yes, the inputs accept voltages up to 5.5 V, allowing direct interfacing with 5-V devices even when powered at lower voltages.