CD74HCT154M

Overview

The CD74HCT154M is a high-speed CMOS logic device functioning as a 4-to-16 line decoder or demultiplexer. Manufactured by Harris Corporation, it operates on a single power supply ranging from 4.5V to 5.5V. The component utilizes a 24-SOIC surface-mount package with a width of 0.295 inches (7.50mm). It supports an operating temperature range from -55°C to 125°C and features three-state outputs for bus-oriented applications.

Feature Summary

• Provides decoding or demultiplexing functionality for four binary select inputs to sixteen active-low outputs
• Features three-state outputs suitable for direct connection to system buses
• Compatible with standard TTL logic levels due to HCT series specifications

Applications

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

Procurement Notes

Verify the manufacturer origin carefully, as Texas Instruments acquired Harris Semiconductor's logic assets. Confirm that the specific batch corresponds to Harris Corporation production rather than TI rebranding. Check RoHS compliance status, as older Harris parts may not meet current environmental standards. Ensure the SOIC package dimensions match the required PCB footprint.

Selection Notes

Select this component when a 4-to-16 decoding function is required with three-state output capability. The HCT series ensures compatibility with 5V TTL logic families. Consider the wide industrial temperature range if the application involves harsh environments. Verify pinout compatibility if replacing legacy designs.

Part Context

This part belongs to the 74HCT logic family, designed for high-speed operation with CMOS low power consumption. It serves as a digital interface component for converting binary codes into one-of-sixteen active signals. The device is integral to address mapping and data routing in complex digital architectures.

Replacement Considerations

CD74HCT154M96: Texas Instruments equivalent with identical logical function and pinout.