MC74HC126AFL1

Overview

The MC74HC126AFL1 is a high-speed CMOS quad bus buffer fabricated with silicon gate CMOS technology. It features four independent 1-bit drivers with true output polarity and three-state control inputs. The device operates within a wide supply voltage range of 2.0 V to 6.0 V, ensuring compatibility with standard logic families. It provides balanced propagation delays and symmetrical output impedance characteristics suitable for general-purpose digital applications.

Feature Summary

• Quad configuration providing four independent non-inverting bus buffers
• Three-state outputs controlled by dedicated enable inputs
• High noise immunity with input protection against static discharge
• Low power dissipation typical of CMOS technology

Applications

• General-purpose bus buffering in digital systems
• Clock distribution networks requiring signal isolation
• Memory interface circuits for data line driving
• I/O expansion modules for microcontroller systems

Procurement Notes

Verify the specific suffix 'AFL1' against official onsemi documentation to confirm package type and tape/reel specifications. Ensure the component meets required RoHS compliance standards for your manufacturing process. Cross-reference the datasheet revision date to confirm parameter validity before integration into final designs.

Selection Notes

Select this component when a quad bus buffer with three-state capability is required for low-power CMOS applications. It serves as a direct replacement for equivalent 74HC126 devices from other manufacturers due to pin and function compatibility. Consider the operating voltage range and propagation delay requirements to ensure suitability for the target system speed.

Part Context

This part belongs to the HC (High-speed CMOS) logic family, designed to offer performance similar to TTL while maintaining CMOS low power advantages. The MC74HC126 series is widely used in industrial and consumer electronics for signal routing and isolation tasks where reliable three-state control is necessary.

Replacement Considerations

Equivalent parts include MC74HC126DTR2G and MC74HC126DR2G from onsemi. Other manufacturers offer compatible devices such as SN74HC126 or TC74HC126, provided pinouts and electrical characteristics match the design requirements.