MC74HCT125ADG

Overview

The MC74HCT125ADG is a quad three-state non-inverting buffer manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V and features four independent output enable inputs that are active-low. The device provides an output drive capability sufficient for 15 LSTTL loads and ensures direct interface compatibility with CMOS, NMOS, and TTL logic families. Packaged in a 14-pin SOIC (N) surface-mount configuration, it supports high noise immunity compliant with JEDEC Standard No. 7A requirements.

Feature Summary

• Provides four independent non-inverting buffers with active-low output enables for precise bus control
• Ensures direct electrical compatibility with standard CMOS, NMOS, and TTL output interfaces
• Delivers robust signal driving capacity capable of supporting multiple LSTTL loads

Applications

• Three-state memory address drivers
• Clock signal distribution systems
• Bus-oriented digital circuit architectures

Procurement Notes

Verify the specific suffix 'DG' corresponds to the 14-pin SOIC package variant when sourcing. Confirm RoHS compliance status as manufacturing processes evolve. Check for alternative suffixes like 'ADTR2G' if reel packaging is required instead of tube. Ensure the component meets current environmental standards before final integration into production designs.

Selection Notes

Select this component when interfacing between different logic families requiring level translation or buffering. The HCT series input characteristics allow seamless connection to TTL outputs while maintaining CMOS performance. Consider the operating temperature range and power supply stability requirements to ensure reliable operation in the target environment without exceeding maximum ratings.

Part Context

This part belongs to the MC74HCT125A family of quad buffers. It shares identical pinout functionality with the LS125 series, facilitating drop-in replacements in legacy designs. The device is designed for general-purpose digital applications where signal isolation and drive strength are critical for system integrity and noise reduction.

Replacement Considerations

Direct functional equivalents include MC74HC125A and MC74LS125. Verify pinout compatibility and voltage tolerance levels before substitution. Alternative packages such as TSSOP may require adapter considerations.