MC74VHC540DWR2

Overview

The MC74VHC540DWR2 is an octal buffer and line driver manufactured by onsemi, belonging to the VHC logic series. It features eight inverting inputs with three-state outputs housed in a 20-pin SOIC package. The device operates within a supply voltage range of 2V to 5.5V. Key electrical specifications include a high-level output current of -8mA and a low-level output current of 8mA. Static current is specified at 4uA, while operating supply current reaches 40uA. The component supports an extended industrial temperature range from -55°C to +125°C.

Feature Summary

• Provides octal buffering with inverting logic functionality for signal conditioning
• Features three-state outputs allowing direct connection to bus lines
• Operates across a wide 2V to 5.5V supply voltage range
• Supports extended industrial temperature operations up to 125°C

Applications

• Bus-oriented memory and address drivers
• Clock distribution and buffering
• TTL to CMOS level translation interfaces

Procurement Notes

Verify the specific suffix 'DWR2' against official manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with RoHS directives if required for your application. Cross-reference the part number with the latest datasheet revision to confirm active status and any potential obsolescence notices prior to procurement.

Selection Notes

Select this component when an octal inverting buffer with three-state capability is required for bus applications. The VHC series offers performance comparable to standard HC logic but with lower power consumption. Verify that the 2V minimum supply voltage meets system requirements, as some legacy designs may require higher voltages. Confirm thermal management needs for the -55°C to +125°C operating range.

Part Context

This part belongs to the MC74VHC540 family of octal buffers. It serves as a digital logic interface component designed for high-speed data transmission. The VHC series is characterized by its low power dissipation and compatibility with various logic families. It is commonly used in embedded systems requiring multiple buffered signals with controlled output states.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.