CD74HC238MT

Overview

The CD74HC238MT is a high-speed CMOS logic device manufactured by Texas Instruments, 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 16-SOIC package. The component features three binary address inputs (A0, A1, A2) that select one of eight outputs. It includes two active-low enable inputs and one active-high enable input to facilitate cascading operations. The device is rated for an operating temperature range from -55°C to +125°C.

Feature Summary

• Provides single 3-to-8 decoding functionality with non-inverting outputs
• Includes multiple enable inputs to simplify system expansion and cascading
• Operates at high speeds comparable to low-power Schottky TTL logic

Applications

• Memory address decoding systems
• Data routing applications
• I/O port selection circuits

Procurement Notes

Verify the specific suffix 'MT' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Check current lifecycle status as some variants may be obsolete or subject to production changes.

Selection Notes

Select this part when non-inverting output states are required for the application. Ensure the system voltage falls between 2V and 6V. Consider the HC series for general CMOS compatibility or HCT if direct LSTTL interface is needed.

Part Context

This component belongs to the CD74HC238 family of high-speed silicon-gate CMOS decoders. It shares functional similarities with the CD74HC138 but differs in output polarity. The MT suffix specifically denotes the SOIC surface-mount package configuration used for automated assembly.

Replacement Considerations

CD74HC238M96 serves as a verified alternative offering identical logical functions in a compatible SOIC-16 package.