MC74HC541AFR1

Overview

The MC74HC541AFR1 is an octal 3-state non-inverting buffer and line driver manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V. The device features inputs and outputs on opposite sides of the package, facilitating PCB layout efficiency. It includes two ANDed active-low output enables for bus-oriented systems. The logic series is HC, with a SOIC-20 surface-mount package. It supports high noise immunity and low input current characteristics typical of CMOS devices.

Feature Summary

• Octal 3-state non-inverting buffer design for bus-oriented applications
• Inputs and outputs located on opposite package sides for simplified routing
• Two ANDed active-low output enables for flexible control
• Compatible with Standard CMOS and LSTTL outputs via external pull-ups

Applications

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

Procurement Notes

Verify the specific suffix 'AFR1' against the official datasheet to confirm tape-and-reel packaging and temperature grade. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target application. Cross-reference with the manufacturer's latest documentation to confirm availability status and any recent product change notices affecting this specific variant.

Selection Notes

Select this component when an octal non-inverting buffer with 3-state capability is required for high-speed CMOS logic interfaces. It is suitable for designs needing drive capability for multiple LSTTL loads. Consider the SOIC-20 package constraints and the requirement for external pull-up resistors if interfacing with LSTTL outputs directly without internal biasing adjustments.

Part Context

This part belongs to the 74HC541 family of octal buffers. It shares pinout compatibility with LS541 devices. The HC series offers higher speed than standard HC logic while maintaining CMOS power consumption levels. It is designed for general-purpose digital buffering in industrial and consumer electronics applications requiring robust signal integrity.

Replacement Considerations

Check for direct equivalents such as NXP 74HC541 or Texas Instruments SN74HC541. Verify that substitute parts maintain the same SOIC-20 package and 3-state functionality. Ensure voltage ranges and output drive capabilities match the original design requirements.