CD74HCT540E

Overview

The CD74HCT540E is a high-speed CMOS logic octal inverting buffer and line driver manufactured by Texas Instruments. It features three-state outputs and operates within a supply voltage range of 4.5 V to 5.5 V. The device utilizes a 20-pin PDIP package for through-hole mounting. It supports an operating temperature range from -55 °C to +125 °C. Key electrical characteristics include a maximum propagation delay of 30 ns at nominal voltage and a maximum output current of 7.8 mA.

Feature Summary

• Octal configuration providing eight independent inverting buffer channels
• Three-state output capability allowing bus-oriented connections
• High-speed CMOS technology ensuring low power consumption
• Wide operating temperature range suitable for industrial environments

Applications

• Bus-oriented systems requiring signal buffering
• Clock distribution networks
• Memory address decoding circuits
• Line driving applications for digital signals

Procurement Notes

Verify the specific suffix 'E' corresponds to the PDIP-20 package variant when sourcing. Confirm RoHS compliance status as indicated in official datasheets. Ensure the supplier provides documentation matching the Texas Instruments part number exactly to avoid confusion with similar HCT series components or alternative packaging options.

Selection Notes

Select this component for designs requiring octal inverting buffers with tri-state control. It is suitable for 5V logic systems interfacing with other HCT or LSTTL devices. Consider the PDIP package constraints for PCB layout if through-hole assembly is mandatory. Verify that the required drive current does not exceed the specified limits for the target application load.

Part Context

This device belongs to the Texas Instruments CD74HCT family, which is compatible with standard 74HCT logic functions. It serves as a digital logic buffer designed for high-speed data transmission. The component is part of a broader portfolio of linear and logic integrated circuits offered by the manufacturer for various electronic system applications.

Replacement Considerations

Check for direct equivalents such as SN74HCT540N or CD74HCT540M96 depending on package requirements. Verify pinout compatibility before substitution. Ensure the replacement maintains the same voltage and temperature specifications.