MC74HC126ADTEL

Overview

The MC74HC126ADTEL is a quad bus buffer manufactured by onsemi, belonging to the HC logic series. It features four independent non-inverting buffers with three-state outputs controlled by high-level enable signals. The device operates within a supply voltage range of 2.0 V to 6.0 V and utilizes a 14-TSSOP surface-mount package. Key electrical characteristics include a maximum static current of 4 µA and output drive capabilities of 7.8 mA for both high and low states. Propagation delay varies from 90 ns at 2 V to 15 ns at 6 V, ensuring compatibility with standard CMOS and LSTTL loads.

Feature Summary

• Provides four independent non-inverting buffers with three-state outputs enabled by high-level control signals
• Compatible with standard CMOS inputs and LSTTL loads when pull-up resistors are used
• Features high noise immunity and low power dissipation typical of CMOS technology

Applications

• Three-state memory address drivers
• Clock drivers in digital systems
• Bus-oriented systems requiring signal isolation

Procurement Notes

Verify the specific suffix ADTEL against official onsemi documentation to confirm pinout and package dimensions. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the operating temperature range aligns with your system's environmental specifications before finalizing procurement.

Selection Notes

Select this component when designing circuits requiring high-speed buffering with three-state control. It is suitable for applications needing wide voltage operation between 2 V and 6 V. Consider its compatibility with existing 74-series logic families for easy integration. Evaluate the propagation delay requirements against the specific supply voltage available in your design to ensure timing margins are met.

Part Context

This component is part of the MC74HC126A family of quad bus buffers. It shares functional similarities with other members like the MC74HC125A, differing primarily in the polarity of the enable signal. The HC series is designed for high-speed operation while maintaining low power consumption, making it a versatile choice for general-purpose digital logic applications across various industrial and consumer electronics.

Replacement Considerations

Direct substitutes include the MC74HC126ADTR2G and MM74HC126MX. These alternatives offer identical logical functions and pin configurations. Verify package compatibility and electrical specifications before swapping components in an existing design.