74ACTQ244SCX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACTQ244SCX is an octal buffer and line driver featuring 3-STATE outputs, designed for memory address driving, clock distribution, and bus-oriented transmission or reception. It utilizes Quiet Series technology to ensure quiet output switching and improved dynamic threshold performance. The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range from -40°C to +85°C. Key electrical characteristics include a maximum propagation delay of 7.0ns at 5.0V with a 50pF load, output source/sink currents of 24mA, and guaranteed pin-to-pin skew AC performance.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Utilizes Quiet Series technology to guarantee quiet output switching and superior dynamic threshold performance.
• Features FACT Quiet Series capabilities including GTO output control and undershoot correction.
• Provides split ground bus architecture for enhanced signal integrity and reduced simultaneous switching noise.
• Offers 3-STATE outputs capable of driving bus lines or buffering memory address registers.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus oriented transmitters
• Bus oriented receivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant, as the SCX suffix denotes the 20-Lead Small Outline Integrated Circuit (SOIC). Confirm that the component meets the required logic family specifications for ACT devices. Ensure compatibility with the target system's voltage levels and thermal requirements before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-density PCB designs require improved dynamic threshold performance and reduced simultaneous switching noise compared to standard AC/ACT buffers. It is suitable for applications demanding faster propagation delays than standard counterparts while maintaining robust latch-up immunity and low quiescent current.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACQ/ACTQ Quiet Series family of octal buffers and line drivers. It is manufactured by onsemi, formerly Fairchild Semiconductor, and is available in multiple package options including SOIC, SOP, PDIP, QSOP, and SSOP. The device is designed to replace standard logic buffers where noise reduction and speed are critical.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include other 74ACT244 variants from onsemi or equivalent octal buffers with 3-state outputs from other manufacturers, provided they match the 20-pin SOIC package and ACT logic voltage specifications.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the maximum propagation delay for the 74ACTQ244SCX?

The maximum propagation delay is 7.0ns at a supply voltage of 5.0V with a 50pF load.

Does the 74ACTQ244SCX support bidirectional data flow?

No, it is an octal buffer/line driver with unidirectional inputs (I0-I7) and outputs (O0-O7).