MC74HC126AD

Overview

The MC74HC126AD is a high-speed CMOS quad bus buffer fabricated with silicon gate CMOS technology. It features four independent non-inverting buffers with three-state outputs controlled by high-active enable inputs. The device operates within a voltage range of 2.0 V to 6.0 V, providing symmetrical output impedance and balanced propagation delays. It offers low power dissipation and high noise immunity, making it suitable for memory address drivers and clock distribution in bus-oriented systems.

Feature Summary

• Four independent non-inverting buffers with three-state outputs
• High-active enable control for output isolation
• Wide operating voltage range from 2.0 V to 6.0 V
• High noise immunity and low power dissipation

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented systems

Procurement Notes

Verify the specific ordering suffix against official datasheets to confirm package type and temperature grade. Ensure compatibility with existing system voltage levels and logic families before integration. Confirm RoHS compliance status if required by manufacturing standards.

Selection Notes

Select this component when a quad buffer with high-active enable control is required. It is compatible with standard 74 series pinouts. Consider the HC series for general-purpose applications requiring wide voltage operation and CMOS compatibility.

Part Context

This part belongs to the ON Semiconductor HC/UH series of logic devices. It is functionally compatible with other 74HC126 variants from different manufacturers, sharing the same pinout and logical operations. The AD suffix typically denotes a specific package configuration, such as SOIC-14.

Replacement Considerations

Compatible substitutes include MC74HC126ADD and MM74HC126MX. Verify pin compatibility and electrical specifications before substitution.