SN74LV138ATDGVR

Overview

The SN74LV138ATDGVR is a low-voltage CMOS 3-to-8 line decoder/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 5.5 V and features three binary address inputs and eight active-low outputs. The device includes two active-low enable inputs and one active-high enable input for cascading or system control. It utilizes a 16-pin TSSOP package with a maximum junction temperature rating of 125°C, designed for surface-mount applications in industrial and consumer electronics.

Feature Summary

• Supports wide supply voltage operation from 2 V to 5.5 V
• Features three binary address inputs and eight active-low outputs
• Includes dual active-low and single active-high enable inputs

Applications

• Address decoding for memory and I/O mapping
• Demultiplexing data streams in communication systems
• Control logic in industrial automation equipment

Procurement Notes

Verify the specific suffix 'DGVR' against the manufacturer's current datasheet to confirm package dimensions and tape-and-reel specifications. Ensure compatibility with existing PCB footprints and reflow soldering profiles. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process before finalizing procurement orders.

Selection Notes

Select this component when a low-voltage 3-to-8 decoder is required with flexible enable control. The LV series offers improved power efficiency compared to older logic families. Consider the TSSOP-16 package size for space-constrained designs. Verify that the operating voltage range matches the system's power supply rails and that the output drive capability meets the load requirements.

Part Context

This part belongs to the SN74LV138A family of decoders and demultiplexers. It shares functional similarities with other variants in the series but differs in packaging and environmental ratings. The 'T' indicates an extended temperature range, while 'DGVR' specifies the TSSOP package and reel configuration. It serves as a standard solution for digital address decoding tasks in modern electronic systems.

Replacement Considerations

Compatible substitutes include SN74LV138ADGVR and SN74LV138APWR. Verify pinout compatibility and electrical characteristics before substitution. Ensure the replacement part meets the same temperature and voltage specifications.