SN74LVC138ANSRG4

Overview

The SN74LVC138ANSRG4 is a 3-to-8 line decoder and demultiplexer manufactured by Texas Instruments. It belongs to the LVC logic family, designed for low-voltage digital applications. The device features three address inputs and eight active-low outputs, allowing precise selection of one output line based on the binary input code. It includes two active-low enable inputs and one active-high enable input to control operation states. The component operates within a supply voltage range of 2 V to 3.6 V and supports surface-mount installation in an SOT-563 package. It is rated for industrial temperature ranges, ensuring reliability in various electronic systems.

Feature Summary

• Provides decoding and demultiplexing functions with three address lines and eight active-low outputs
• Features dual active-low and single active-high enable inputs for flexible control
• Operates at low supply voltages suitable for modern portable electronics

Applications

• Address decoding in memory architectures
• Demultiplexing data streams in communication interfaces
• Control signal routing in embedded systems

Procurement Notes

Verify the exact part number SN74LVC138ANSRG4 against official Texas Instruments documentation to confirm availability and specifications. Check for RoHS compliance status and ensure the package type matches design requirements. Confirm lead times and lifecycle status as components may be subject to obsolescence or supply chain variations.

Selection Notes

Select this component when low voltage operation between 2 V and 3.6 V is required. Ensure the system needs three address lines and eight decoded outputs. Verify that the SOT-563 package fits the PCB layout constraints. Consider propagation delay characteristics if timing criticality exists in the application design.

Part Context

This decoder is part of the broader SN74LVC138 series from Texas Instruments. The series offers various package options including SOIC, TSSOP, and small outline variants. The LVC family is characterized by its compatibility with 3.3 V systems while maintaining performance at lower voltages. This specific variant utilizes a compact surface-mount package for space-constrained designs.

Replacement Considerations

Compatible substitutes include other SN74LVC138 variants with different packages such as SN74LVC138APWR or SN74LVC138ADGVR. Cross-reference pinouts and electrical characteristics before substitution. Ensure equivalent enable logic and output drive capabilities match the original design requirements.