MC74HC126AFR2

Overview

The MC74HC126AFR2 is a high-speed CMOS quad bus buffer fabricated with silicon gate technology. It provides four independent non-inverting buffers with separate output enable inputs that are active-high. The device operates within a voltage range of 2.0 V to 5.5 V, ensuring compatibility with standard CMOS and LSTTL loads. It features balanced propagation delays and low power dissipation, making it suitable for memory address drivers and clock drivers in bus-oriented systems.

Feature Summary

• Provides four independent non-inverting buffers with active-high output enables
• Operates across a wide supply voltage range from 2.0 V to 5.5 V
• Compatible with standard CMOS outputs and LSTTL loads via pull-up resistors
• Features high noise immunity and low power consumption characteristics

Applications

• Memory address drivers in bus-oriented systems
• Clock signal distribution and buffering
• General-purpose bus transceivers requiring tri-state control

Procurement Notes

Verify the specific suffix 'FR2' against official onsemi documentation to confirm tape-and-reel packaging specifications and lead-free status. Ensure the orderable part number matches the exact datasheet revision for accurate electrical parameter validation before procurement.

Selection Notes

Select this component when a quad non-inverting buffer with active-high enable control is required. It serves as a direct pin-compatible replacement for LS126 equivalents while offering improved speed and lower power consumption typical of HC series logic families.

Part Context

This component belongs to the MC74HC126 family of quad bus buffers. It shares functional similarities with the MC74HC125A but differs in enable polarity, utilizing active-high enables instead of active-low. It is designed for high-density applications requiring reliable signal buffering in digital systems.

Replacement Considerations

MC74HC126DTR2G is a confirmed substitute part number within the same product family.