SN74LVC138APWRE4

Overview

The SN74LVC138APWRE4 is a 3-to-8 line decoder and demultiplexer from the Texas Instruments LVC logic family. It features three binary address inputs and eight active-low outputs, controlled by two active-low enable inputs and one active-high enable input. The device operates within a supply voltage range of 2 V to 3.6 V and exhibits a propagation delay of 6.7 ns. It is housed in a TSSOP-16 surface-mount package and supports an operating temperature range from -55 °C to +125 °C.

Feature Summary

• Provides decoding and demultiplexing functions with three binary address lines and eight active-low outputs.
• Includes dual active-low and single active-high enable inputs for flexible control logic integration.
• Operates at low supply voltages ranging from 2 V to 3.6 V with high-speed signal processing capabilities.

Applications

• Address decoding in embedded systems
• Demultiplexing data streams in digital circuits
• Control logic implementation in industrial automation

Procurement Notes

Verify the specific suffix RE4 confirms the tape-and-reel packaging format upon ordering. Confirm that the automotive-grade qualification aligns with project requirements, as standard and qualified variants may differ in reliability specifications. Ensure the TSSOP-16 footprint matches the PCB design constraints before finalizing procurement.

Selection Notes

Select this component when low-voltage operation between 2 V and 3.6 V is required alongside high-speed performance. The wide industrial temperature range makes it suitable for harsh environments. Compare against standard LVC variants if automotive certification is not necessary, or consider alternative packages if pin count differs.

Part Context

This part belongs to the SN74LVC138A series of decoders and demultiplexers manufactured by Texas Instruments. It is part of the broader LVC logic family designed for low-voltage applications. The RE4 suffix specifically denotes the reel packaging configuration used for automated surface-mount assembly processes.

Replacement Considerations

SN74LVC138APWR is the tube-packaged equivalent of the same logical device. SN74LVC138ADRE4 offers identical functionality but utilizes a SOIC-Narrow-16 package instead of TSSOP-16. Verify pin compatibility and thermal characteristics when substituting these alternatives.