SN74LVC138APWRG4

Overview

The SN74LVC138APWRG4 is a 3-to-8 line decoder and demultiplexer from Texas Instruments' LVC logic family. It operates within a supply voltage range of 2 V to 5.5 V and features a propagation delay of 15 ns. The device utilizes a TSSOP-16 surface-mount package and supports an operating temperature range from -40 °C to +85 °C. It includes two active-low and one active-high enable inputs for flexible control.

Feature Summary

• Provides decoding and demultiplexing functions with three address inputs and eight outputs
• Features two active-low and one active-high enable inputs for system control
• Operates across a wide supply voltage range suitable for various digital logic levels

Applications

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

Procurement Notes

Verify the specific suffix G4 indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the TSSOP-16 package dimensions match your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Cross-reference the datasheet for exact electrical characteristics before finalizing procurement.

Selection Notes

Select this component when a standard 3-to-8 decoder is required with low power consumption and high speed. The LVC series offers compatibility with both 3.3 V and 5 V systems. Consider the TSSOP-16 package for space-constrained designs. Verify that the enable input configuration aligns with your system's control logic requirements.

Part Context

This part belongs to the SN74LVC138A series, which are widely used general-purpose logic devices. The G4 suffix typically denotes a green/RoHS-compliant variant produced by Texas Instruments. It serves as a direct replacement for older 74HC138 or 74HCT138 equivalents in modern low-voltage applications requiring improved performance and lower power dissipation.

Replacement Considerations

SN74LVC138APWR is the non-RoHS equivalent. SN74LV138APWRG4 is a higher voltage variant (up to 5.5V) with slower speed (15ns). SN74LVC138AQDRQ1 is the automotive-grade version in SOIC-16 package.