CD74HCT138M96

Overview

The CD74HCT138M96 is a high-speed CMOS decoder/demultiplexer manufactured by Texas Instruments. It features a single 3-to-8 line decoding circuit housed in a 16-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -55°C to +125°C. Key electrical parameters include a maximum propagation delay of 28 ns, with output drive capabilities of 4 mA for both high and low states.

Feature Summary

• Provides one 3-to-8 line decoder function for address decoding or data routing
• Features three binary select inputs (A0, A1, A2) to determine active output
• Includes two active-low enable inputs and one active-high enable input to facilitate cascading

Applications

• Memory address decoding
• Data routing applications
• Cascaded decoder systems

Procurement Notes

Verify the specific suffix M96 against the manufacturer datasheet to confirm the tape-and-reel packaging configuration. Ensure the component meets RoHS3 compliance requirements as specified in the environmental classification. Confirm that the 16-SOIC package dimensions align with the target PCB footprint constraints before finalizing procurement.

Selection Notes

Select this component when a single 3-to-8 decoder is required within the HCT logic family. It offers speed comparable to Low-Power Schottky TTL while maintaining CMOS power efficiency. Verify that the 4.5 V to 5.5 V supply voltage range matches the system design specifications and that the industrial temperature range suits the operational environment.

Part Context

This part belongs to the CD74HCT series of high-speed silicon-gate CMOS logic devices produced by Texas Instruments. The series is designed to provide performance similar to Low-Power Schottky TTL logic but with lower power consumption typical of CMOS technology. The CD74HCT138 variant specifically addresses the need for efficient 3-to-8 decoding in digital systems.

Replacement Considerations

Compatible substitutes include CD74HC138M96 and CD74HCT138E4. Verify pinout compatibility and ensure that the alternative part number maintains the same 16-SOIC package and electrical characteristics.