MC74VHC540DTR2

Overview

The MC74VHC540DTR2 is an obsolete octal buffer and line driver manufactured by onsemi. It belongs to the 74VHC logic series, featuring a single element with eight bits per element. The device provides three-state outputs and operates within a supply voltage range of 2V to 5.5V. It is packaged in a 20-TSSOP case with a width of 4.40mm. The component supports surface mount mounting and functions across an operating temperature range of -55°C to 125°C.

Feature Summary

• Octal configuration providing eight independent signal paths
• Inverting buffer functionality with three-state output capability
• Wide operating voltage range supporting low-power applications

Applications

• Memory address buffering
• Clock distribution circuits
• Data bus driving

Procurement Notes

This part number is officially classified as obsolete and is no longer manufactured by onsemi. Verification of current availability requires checking distributor inventory for remaining stock or identifying qualified replacement components from the same manufacturer family. Ensure any substitute maintains compatible pinout and electrical specifications.

Selection Notes

Select this component only if legacy system compatibility is required and obsolete stock can be sourced. For new designs, consider active alternatives within the 74VHC series that offer updated manufacturing status. Verify package dimensions and thermal characteristics against board layout constraints before integration.

Part Context

The MC74VHC540DTR2 is part of onsemi's 74VHC series of high-speed CMOS logic devices. This series is designed for low-voltage applications, offering performance comparable to standard TTL while consuming significantly less power. The specific model serves as an octal buffer, commonly used in digital systems requiring signal isolation or level shifting.

Replacement Considerations

Public confirmed substitutes include MC74VHC540ADTR2G and MM74VHC540MTCX.