MC74ACT240M

Overview

The MC74ACT240M is an octal buffer and line driver from the ACT series, manufactured by Motorola. It features inverting 3-STATE outputs designed for memory address drivers, clock drivers, and bus-oriented transmitter or receiver applications. The device provides improved printed circuit board density with reduced ICC and IOZ currents. Outputs are capable of sourcing and sinking 24 mA, while inputs remain TTL-compatible.

Feature Summary

• Octal buffer and line driver configuration
• Inverting 3-STATE output capability
• TTL-compatible input structure

Applications

• Memory address driving
• Clock signal distribution
• Bus-oriented transmission and reception

Procurement Notes

Verify the specific manufacturer origin, as Motorola's semiconductor division was acquired by NXP and later spun off as onsemi. Confirm that the 'M' suffix corresponds to the correct package type and temperature range for the intended application. Cross-reference datasheets from current authorized distributors to ensure component authenticity and compliance with current RoHS standards.

Selection Notes

Select this component when an octal inverting buffer with high drive capability is required. The 24 mA output current supports direct driving of bus lines. Ensure the system operates within the specified voltage range and that the TTL-compatible inputs align with the source logic family. Verify package availability matches the PCB footprint requirements.

Part Context

This part belongs to the 74ACT logic family, which combines the speed of AC logic with CMOS power consumption. It serves as a standard interface solution for digital systems requiring signal buffering and inversion across eight channels simultaneously.

Replacement Considerations

Compatible substitutes include the 74ACT240 from Fairchild Semiconductor, STMicroelectronics, and onsemi. These parts share identical logical functions and pinouts but may differ in specific electrical parameters or packaging options.