MC74ACT244MELG

Overview

The MC74ACT244MELG is an octal buffer and line driver manufactured by onsemi, belonging to the 74ACT series. It features 3-state outputs designed for memory address driving, clock distribution, and bus-oriented transmitter/receiver applications. The device provides improved printed circuit board density with outputs capable of sourcing and sinking 24 mA. It operates within a supply voltage range of 4.5 V to 5.5 V and supports surface mount mounting in a 20-SSOP package.

Feature Summary

• Octal buffer and line driver configuration
• 3-state output capability
• TTL compatible inputs
• High drive current capacity

Applications

• Memory address drivers
• Clock drivers
• Bus oriented transmitter/receiver

Procurement Notes

Verify the specific suffix MELG against official datasheets to confirm package type and environmental compliance. Confirm part status as active or obsolete through manufacturer channels before procurement. Ensure compatibility with 5V logic systems given the specified operating voltage range.

Selection Notes

Select this component for high-density digital designs requiring octal buffering with 3-state control. It is suitable for systems needing TTL-compatible input levels and robust output drive strength. Verify that the SSOP package fits the target PCB footprint and thermal requirements.

Part Context

This part belongs to the 74ACT family of advanced CMOS logic devices. It serves as a direct replacement for older 74LS244 equivalents while offering faster switching speeds and lower power consumption. The octal configuration allows for efficient handling of wide data buses in microprocessor-based systems.

Replacement Considerations

MC74ACT244DTR2G

FAQ

What is the maximum output drive current?

The outputs are capable of sourcing and sinking 24 mA.

Is the input logic compatible with TTL levels?

Yes, the MC74ACT244 has TTL compatible inputs.