74ACQ244SJ

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACQ244SJ is an octal buffer and line driver utilizing Quiet Series technology for improved PC board density. It features 3-STATE outputs, operates within a 2.0V to 6.0V supply range, and supports -40°C to +85°C temperatures. Propagation delays are 9.5 ns max at 3.3V and 6.5 ns max at 5.0V. Outputs source/sink 24 mA with quiescent current of 40 µA max.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Utilizes Quiet Series technology for guaranteed quiet output switching and dynamic threshold performance.
• Features GTO output control and undershoot corrector for superior noise immunity.
• Includes split ground bus design to reduce simultaneous switching noise levels.

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the M20D package designation matches the SOP form factor. Confirm the AC logic family specifications against system voltage requirements. Check datasheet revisions for any updates to electrical characteristics or ordering information before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-density buffering with reduced noise. The 20-lead SOP package suits space-constrained designs. Ensure input edge rates meet the minimum 125 mV/ns requirement for reliable operation across the specified temperature range.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ACQ244 series, part of Fairchild's Quiet Series logic family. It is designed to replace standard AC/ACT buffers while offering lower power consumption and enhanced noise performance through specific internal circuitry improvements like the undershoot corrector.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible pin-to-pin replacements include the 74ACQ244SC (SOIC) and 74ACQ244PC (PDIP). Verify that substitute packages maintain the required thermal and mechanical specifications for the target application environment.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the maximum propagation delay for the 74ACQ244SJ?

The maximum propagation delay is 9.5 ns at 3.3V and 6.5 ns at 5.0V, measured with a 50 pF load.

How does the device handle simultaneous switching noise?

It employs FACT Quiet Series technology, including a split ground bus and undershoot corrector, to guarantee low simultaneous switching noise levels.