M74HC540RM13TR

Overview

The M74HC540RM13TR is an octal buffer and line driver manufactured by STMicroelectronics, belonging to the 74HC series of high-speed CMOS logic devices. It features eight non-inverting buffers with three-state outputs, housed in a 20-SOIC surface-mount package. The component operates within a supply voltage range of 2V to 6V and supports a maximum clock frequency of 90 MHz. Key electrical characteristics include a propagation delay of 32ns at 6V with 150pF load, output currents of 7.8mA for both high and low states, and a static current of 4µA. It functions reliably across an operating temperature range of -55°C to 125°C.

Feature Summary

• Provides eight non-inverting buffer channels with independent control capabilities
• Features three-state outputs allowing direct connection to bus-oriented systems
• Utilizes high-speed CMOS technology for low power consumption and fast switching

Applications

• Bus-oriented architectures requiring signal buffering
• Clock drivers for high-speed digital systems
• Memory address and data register drives

Procurement Notes

Verify the obsolete status of this specific part number before procurement planning. Confirm availability of qualified replacement components from manufacturers such as Texas Instruments or Nexperia. Ensure that any substitute device matches the original pinout, package dimensions, and electrical specifications to maintain system compatibility without redesign.

Selection Notes

Select this component when designing systems requiring multiple buffered outputs with tri-state capability. Consider the wide operating temperature range and robust noise immunity inherent to HC logic families. Evaluate the trade-off between the 7.8mA drive strength and the 32ns propagation delay against system timing requirements and power budget constraints.

Part Context

This device is part of the standard 74HC logic family, widely used in general-purpose digital electronics. It serves as a fundamental building block for managing signal integrity and driving loads in complex integrated circuits. The SOIC-20 package facilitates automated assembly in modern manufacturing environments.

Replacement Considerations

Direct substitutes include SN74HC540DR from Texas Instruments. Alternative options may involve checking equivalent offerings from other major semiconductor vendors that adhere to the same JEDEC standards.