74ACTQ240SJX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACTQ240SJX is an octal buffer and line driver featuring inverting 3-STATE outputs. It utilizes Quiet Series technology to reduce simultaneous switching noise and improve dynamic threshold performance. The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature from -40°C to +85°C. Outputs are capable of sourcing and sinking 24mA. Propagation delay (tPHL/tPLH) at 5.0V is typically 5.5ns with a maximum of 7.5ns. Output enable times (tPZL/tPZH) are typically 6.5ns, while output disable times (tPHZ/tPLZ) are typically 7.0ns.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Quiet Series technology reduces ICC and IOZ by 50% compared to standard ACT devices.
• Guaranteed pin-to-pin skew AC performance for precise timing control.
• Improved latch-up immunity and undershoot correction capabilities.

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant against the datasheet ordering information. The 'SJ' suffix indicates a 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide. Confirm RoHS compliance status through official manufacturer documentation as specifications may vary by production lot. Ensure the component source matches the original Fairchild Semiconductor manufacturing lineage.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-density PCB layouts require reduced power consumption and minimized signal integrity issues caused by simultaneous switching noise. The 3-STATE capability allows for effective bus sharing. Verify that the required propagation delay and drive current meet the system's electrical constraints before finalizing the design.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACQ/ACTQ Quiet Series family of logic ICs. These components were originally developed by Fairchild Semiconductor Corporation. The series is designed to offer superior performance over standard logic families by addressing noise and power efficiency challenges in complex digital systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for equivalents such as the 74ACT240 or other octal buffers with 3-STATE outputs. Verify pin compatibility and electrical characteristics carefully, as the Quiet Series features differ significantly from standard variants.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the OE1 and OE2 pins?

OE1 and OE2 are 3-STATE Output Enable inputs that control the state of the respective groups of outputs.

How does the Quiet Series technology benefit the circuit?

It guarantees quiet output switching and improves dynamic threshold performance, reducing simultaneous switching noise levels.