SN74LV138ATD

Overview

The SN74LV138ATD is a 3-line to 8-line decoder/demultiplexer from Texas Instruments, designed for high-performance memory-decoding or data-routing applications requiring very short propagation delays. It operates within a supply voltage range of 2 V to 5.5 V and features low dynamic power consumption. The device utilizes a TSSOP-16 package and supports an operating temperature range from -40°C to +125°C. Key electrical characteristics include a maximum propagation delay of 13 ns at 5 V.

Feature Summary

• Provides three active-low enable inputs (two active-low, one active-high) for flexible system control and chip selection.
• Designed for high-performance applications requiring very short propagation delays in memory decoding or data routing.
• Features low dynamic power consumption suitable for battery-powered or energy-efficient designs.

Applications

• High-performance memory decoding systems
• Data routing circuits
• Industrial control systems

Procurement Notes

Verify the specific suffix 'D' indicates the SOIC-16 package variant when ordering. Confirm RoHS compliance status through official manufacturer documentation. Ensure the selected component matches the required operating temperature range and voltage specifications for your application environment before finalizing procurement.

Selection Notes

Select this component when a 3-to-8 line decoding function with low propagation delay is required. Consider the TSSOP-16 or SOIC-16 package availability based on PCB layout constraints. Verify that the input logic levels are compatible with the driving circuitry within the 2 V to 5.5 V supply range.

Part Context

This part belongs to the SN74LV138A family of decoders and demultiplexers. It is engineered for compatibility with standard CMOS logic families while offering improved speed and lower power consumption compared to older LS series counterparts. The LV-A series ensures robust performance across wide voltage ranges.

Replacement Considerations

Direct substitutes include SN74LV138APWR and SN74LV138ADGVRG4. Verify pinout compatibility and package dimensions before substitution. Ensure equivalent electrical parameters such as propagation delay and supply voltage range match the original design requirements.