74ACT244MSAX

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74ACT244MSAX is an octal bus buffer featuring three-state outputs, fabricated using advanced CMOS technology. It operates within a voltage range of 4.5V to 5.5V and provides symmetrical output impedance with a minimum drive capability of 24mA for both sourcing and sinking currents. The device offers high-speed performance with a typical propagation delay of 4.6ns at 5V supply. It includes two groups of four buffers controlled by separate enable inputs, ensuring balanced propagation delays and compatibility with TTL input levels.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Advanced CMOS fabrication ensures low power dissipation while maintaining high-speed operation comparable to equivalent Bipolar Schottky TTL circuits.
• Features two independent control inputs that manage four buffers each, allowing flexible configuration for memory address drivers and bus-oriented transmissions.
• Provides symmetrical output impedance capable of driving terminated transmission lines down to 50 ohms without significant loading effects.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers in computer systems
• Clock drivers requiring high fan-out capabilities
• Bus-oriented transmissions in communication systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'MSAX' against official Fairchild documentation to confirm package type and tape-and-reel specifications. Ensure the component matches the required operating temperature range and electrical characteristics defined in the datasheet before integration into designs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal buffering with three-state outputs and TTL-compatible inputs. It is suitable for applications needing low power consumption alongside high-speed signal integrity and robust drive strength for transmission line termination.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACT series of logic devices, which are designed to bridge the gap between standard TTL logic families and CMOS technologies. The 74ACT244 variant specifically addresses the need for high-performance buffering in digital systems where speed and power efficiency are critical constraints.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for pin-compatible alternatives such as the SN74ACT244 from Texas Instruments or STMicroelectronics 74ACT244 variants. Verify functional equivalence regarding propagation delay, output drive current, and input threshold voltages before substitution.