74ACTQ244SJX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACTQ244SJX is an octal buffer and line driver utilizing Fairchild Quiet Series technology. It features 3-STATE outputs capable of sourcing or sinking 24 mA. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports temperatures from -40°C to +85°C. Propagation delays are typically 5.5 ns at 5.0 V with a 50 pF load, reaching a maximum of 7.0 ns across the temperature range. Output enable times are typically 7.0 ns, while disable times are typically 8.0 ns.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Utilizes FACT Quiet Series technology for guaranteed simultaneous switching noise levels and improved dynamic threshold performance.
• Features GTO output control and undershoot corrector for superior switching characteristics.
• Includes split ground bus design to enhance performance and latch-up immunity.
• Provides pin-to-pin skew AC performance guarantees.

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, as the SJX suffix denotes the SOP format. Confirm RoHS compliance status through official documentation. Check current lifecycle status as older datasheets may not reflect recent discontinuation notices. Ensure the ordering code matches the required tape and reel specifications if applicable.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when low simultaneous switching noise is critical for system stability. The ACTQ series offers faster propagation delays compared to standard AC/ACT counterparts. Verify input voltage compatibility with TTL levels for the ACTQ variant. Consider the 24 mA drive capability for direct bus interfacing without additional buffering.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACQ/ACTQ Quiet Series family, designed by Fairchild Semiconductor (now onsemi). It is an octal buffer/driver variant within the broader 74xx logic family. The 'Q' designation indicates the use of Quiet Series technology, distinguishing it from standard AC or ACT devices in terms of noise performance and dynamic thresholds.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include the MC74ACTQ244SC or MC74ACTQ244PC depending on the required package type. Standard 74ACT244 devices may serve as functional replacements but lack the specific noise reduction features of the Quiet Series. Verify pinout compatibility before substitution.