CD74HC238PWRG4

Overview

The CD74HC238PWRG4 is a high-speed CMOS logic device functioning as a 3-to-8 line decoder and demultiplexer. It operates within a supply voltage range of 2V to 6V and supports surface-mount installation in a TSSOP-16 package. The component features three address inputs and eight active-low outputs, complemented by two active-low enable inputs and one active-high enable input for precise control. Designed for robust performance, it withstands operating temperatures from -55°C to +125°C and includes ESD protection exceeding 2000V per the Human Machine Model.

Feature Summary

• Provides decoding and demultiplexing functions via three binary address lines controlling eight distinct output channels.
• Incorporates multiple enable inputs to manage chip activation states, ensuring controlled signal routing.
• Utilizes high-speed CMOS technology to deliver low power consumption alongside rapid switching capabilities.

Applications

• Address decoding in microprocessor-based systems
• Data distribution in digital communication circuits
• Memory selection logic in embedded controllers

Procurement Notes

Verify the specific suffix G4 indicates lead-free compliance and RoHS adherence during sourcing. Confirm the TSSOP-16 package dimensions match your PCB footprint requirements. Ensure the supplier provides valid traceability documentation for automotive or industrial grade specifications if required by your design standards.

Selection Notes

Select this component when a single 3-to-8 decoder is sufficient for your logic architecture. Consider the HC series for standard speed applications requiring wide voltage flexibility. Evaluate the TSSOP-16 package constraints against your available board space and thermal management strategies before finalizing the design.

Part Context

This part belongs to the Texas Instruments CD74HC238 family, which standardizes 3-to-8 decoding functions across various packaging options. The HC designation signifies High-Speed CMOS technology, offering compatibility with standard TTL logic levels while maintaining lower power dissipation than older bipolar counterparts.

Replacement Considerations

The CD74HC238PW serves as a direct pin-compatible alternative within the same product family. Verify that the substitute maintains identical electrical characteristics and package dimensions to ensure seamless integration without redesigning the host circuit board.