CD74HCT154ENG4

Overview

The CD74HCT154ENG4 is a high-speed CMOS logic device manufactured by Texas Instruments, functioning as a 4-to-16 line decoder/demultiplexer. It 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. The component utilizes a 24-pin DIP package with through-hole mounting. It features two enable inputs for control and provides active-low outputs. The device is RoHS compliant and lead-free.

Feature Summary

• High-speed CMOS technology ensures rapid switching performance compatible with standard logic families.
• Dual enable inputs allow for flexible cascading and system-level control management.
• Active-low output decoding simplifies interface connections in digital circuit designs.

Applications

• Address decoding in microprocessor-based systems
• Data routing in communication equipment
• Memory selection circuits

Procurement Notes

Verify the specific suffix 'ENG4' against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Ensure the procurement channel provides original manufacturer documentation to validate RoHS compliance and lead-free status. Cross-reference the 24-pin DIP package dimensions with PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when a single-channel 4-to-16 decoding function is required in a through-hole design. The HCT series compatibility allows direct interfacing with TTL logic levels while maintaining CMOS power efficiency. Consider the wide industrial temperature range if the application operates in harsh environments. Verify that the active-low output polarity aligns with the downstream load requirements.

Part Context

This part belongs to the Texas Instruments CD74HCT family of high-speed CMOS logic devices. The 'E' designation indicates a 24-pin DIP package, while 'G4' signifies RoHS compliance and lead-free construction. It serves as a legacy alternative to surface-mount variants like the M96 series, supporting older or prototyping board designs requiring through-hole integration.

Replacement Considerations

The CD74HCT154M96 is a surface-mount equivalent offering identical logical functionality in a 24-SOIC package. Direct pin-for-pin replacement requires adapter solutions due to the package difference. Other family members like the HC154 share similar logic but may differ in drive strength and speed characteristics.