CD74HC540M

Overview

The CD74HC540M is an octal inverting buffer and line driver manufactured by Harris Corporation. It belongs to the 74HC series of high-speed CMOS logic devices. The component features eight independent inverters with three-state outputs, allowing for controlled signal transmission on bus-oriented systems. It operates within a supply voltage range of 2V to 6V and supports a wide operating temperature range from -55°C to 125°C. The device is housed in a 16-pin Small Outline (SOIC) package.

Feature Summary

• Octal configuration providing eight independent inverting channels
• Three-state output capability for effective bus driving applications
• High-speed CMOS technology ensuring low power consumption

Applications

• Bus-oriented memory and address drivers
• Clock distribution circuits
• Data register buffering

Procurement Notes

Verify the manufacturer origin carefully, as Texas Instruments acquired Harris Semiconductor's logic product lines. Ensure the specific suffix 'M' corresponds to the SOIC package variant required for your design. Confirm RoHS compliance status, as older Harris-branded inventory may differ from current TI specifications. Cross-reference datasheets between Harris and Texas Instruments to ensure pinout and electrical characteristics remain consistent across the transition.

Selection Notes

Select this component when designing systems requiring multiple inverted signals with tri-state control capabilities. The HC series offers faster switching speeds compared to standard 74LS logic while maintaining CMOS power efficiency. Consider the 2V to 6V operating range if interfacing with varying logic levels. The wide temperature rating makes it suitable for industrial environments where extreme thermal conditions are expected during operation.

Part Context

This part is part of the widely adopted 74HC family of digital logic integrated circuits. These components serve as fundamental building blocks for complex digital systems, facilitating signal routing and isolation. The specific designation indicates an octal buffer configuration, distinguishing it from hex or quad variants within the same logical family architecture.