MC74ACT240DW

Overview

The MC74ACT240DW is an octal buffer and line driver from the 74ACT logic family, manufactured by onsemi. It features eight inverting outputs with three-state capability, housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical characteristics include a maximum high-level output current of -24 mA and a low-level output current of 24 mA. Static current is specified at 4 uA, with a typical propagation delay of 8.5 ns at 5 V. The component supports a minimum operating temperature of -40°C.

Feature Summary

• Octal configuration providing eight independent inverting buffer channels for parallel data handling.
• Three-state output architecture enabling direct bus organization and system-wide signal isolation.
• ACT series CMOS technology delivering high-speed performance comparable to TTL while maintaining low power consumption.

Applications

• Clock distribution networks requiring buffered signals for multiple destinations.
• Memory address and data bus drivers in computer systems.
• Control signal routing in industrial automation equipment.

Procurement Notes

Verify the specific suffix against official documentation, as variations may indicate different packaging or environmental ratings. Confirm that the requested part number matches the exact pinout and electrical specifications required for the design. Check for any obsolescence notices or lifecycle status updates from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring octal buffering with three-state control at standard 5V logic levels. Ensure the application demands the specific drive strength and speed characteristics provided by the ACT series. Verify that the SOIC-20 package fits the available PCB footprint and thermal constraints of the target assembly.

Part Context

This device belongs to the 74ACT family of high-speed CMOS logic devices. It serves as a functional equivalent to other octal buffers within the industry-standard 74xx series lineage. The component is designed to interface between microprocessors, memory arrays, and peripheral devices in digital logic circuits.

Replacement Considerations

Public confirmed substitute part numbers: MC74ACT240DWG, MC74ACT240DWR2.