74LCX540MSA

Overview

The MC74LCX540MSA is an octal buffer and line driver manufactured by onsemi, belonging to the 74LCX logic family. It features inverted outputs with three-state capability, allowing for effective bus holding and minimal power consumption during idle states. The device operates within a supply voltage range of 2.0V to 3.6V, making it suitable for low-voltage digital applications. It is housed in a 20-lead SSOP package designed for surface-mount technology.

Feature Summary

• Provides eight-bit data buffering with inverted logic functionality
• Features three-state outputs for efficient bus management
• Operates at low supply voltages compatible with modern digital systems

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffering
• High-speed data transmission lines

Procurement Notes

Verify the specific manufacturer part number against official onsemi documentation to confirm availability and exact specifications. Ensure that the ordering suffix matches the required package type and tape-and-reel configuration. Cross-reference with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing circuits requiring low-voltage operation between 2.0V and 3.6V. It is appropriate for applications needing high-speed signal buffering with inverted output polarity. Consider the SSOP package constraints for PCB layout and thermal management requirements.

Part Context

This component is part of the 74LCX series, which utilizes CMOS technology optimized for low voltage and low power consumption. The LCX series is designed to replace older LVC and HC families in applications requiring faster switching speeds and lower dynamic power dissipation while maintaining compatibility with standard logic interfaces.

Replacement Considerations

Direct substitutes include other octal buffers from the same family, such as the MC74LCX541 (non-inverting) or equivalent parts from other manufacturers like NXP or Texas Instruments, provided they match the 2.0V-3.6V operating range and SSOP-20 package.