SN74LV138ADGVR

Overview

The SN74LV138ADGVR 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 chip selection control. Packaged in a 16-pin TSSOP (DGVR) format, it supports surface-mount installation with an operating temperature range extending from -40°C to +85°C.

Feature Summary

• Provides decoding or demultiplexing functions using three binary address lines to select one of eight active-low outputs.
• Incorporates dedicated enable logic with two active-low and one active-high inputs to manage device activation states.
• Utilizes low-voltage CMOS technology compatible with standard logic families across a wide supply voltage spectrum.

Applications

• Address decoding for memory mapping in embedded systems
• Demultiplexing data streams in communication interfaces
• Control signal routing in industrial automation equipment

Procurement Notes

Verify the specific suffix DGVR confirms the TSSOP-16 package variant when sourcing. Ensure compatibility with the required 2 V to 5.5 V operating voltage range for your target application. Confirm RoHS compliance status as indicated by manufacturer documentation. Check for any automotive or extended temperature variants if environmental conditions exceed standard commercial limits.

Selection Notes

Select this component when a low-power 3-to-8 decoder is required within a compact surface-mount footprint. The LV series offers improved performance over legacy HC/HCT types at lower voltages. Consider the specific enable pin configuration if complex chip-select logic is needed. Verify that the TSSOP-16 package dimensions fit the available PCB space constraints.

Part Context

This part belongs to the SN74LV138A family of decoders and demultiplexers produced by Texas Instruments. The LV series is designed for low-voltage applications, offering faster switching speeds and lower power consumption compared to older technologies. The DGVR suffix specifically denotes the thin-shrink small-outline package type used for high-density board layouts.

Replacement Considerations

Direct replacements include other SN74LV138A variants with different package options such as SN74LV138APWR or SN74LV138ATPWR. Cross-family alternatives like SN74LVC138 may require voltage level adjustments. Always verify pinout compatibility and electrical specifications before substituting.