74ACTQ244QSC

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACTQ244QSC is an octal buffer and line driver featuring 3-STATE outputs, housed in a 20-lead Quarter Size Outline Package (QSOP). It operates within a supply voltage range of 4.5V to 5.5V and supports temperatures from -40°C to +85°C. The device provides 24mA output drive capability with propagation delays up to 7.0ns at 5.0V. It utilizes Quiet Series technology for reduced simultaneous switching noise and improved dynamic threshold performance.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Utilizes FACT Quiet Series technology to guarantee quiet output switching and superior dynamic threshold performance.
• Features GTO output control and undershoot correction mechanisms alongside a split ground bus design.
• Provides guaranteed pin-to-pin skew AC performance and enhanced latch-up immunity.

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific QSOP package designation (MQA20) matches the target PCB footprint requirements. Confirm that the ACT logic family voltage thresholds align with the system's input/output levels. Ensure the operating temperature range meets the environmental specifications of the final application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-density board layouts require a compact 20-lead QSOP form factor. Choose this part for applications demanding reduced simultaneous switching noise compared to standard AC/ACT families. Ensure the design accommodates the specific dynamic input voltage thresholds characteristic of the Quiet Series technology.

Buffers, Drivers, Receivers, Transceivers Part Context

This component belongs to the 74ACTQ series, which integrates Fairchild's Quiet Series technology into the standard 74ACT octal buffer architecture. The 'Q' suffix specifically denotes the inclusion of GTO output control and undershoot correction features designed to minimize electromagnetic interference during high-speed switching operations.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Standard 74ACT244 devices may serve as functional replacements if noise reduction is not critical. Verify package compatibility between QSOP and alternative packages such as SOIC or TSSOP before substitution.