74ACQ240SCX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACQ240SCX is an inverting octal buffer and line driver featuring 3-STATE outputs, manufactured using Fairchild's Quiet Series technology. It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. The device provides improved PC board density with guaranteed simultaneous switching noise levels and dynamic threshold performance. Key electrical parameters include output source/sink currents of 24 mA, maximum quiescent supply current of 40 µA, and propagation delays ranging from 1.5 ns to 10.5 ns depending on voltage and load conditions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Utilizes FACT Quiet Series technology including GTO output control and undershoot corrector for superior performance.
• Features split ground bus architecture to guarantee quiet output switching and improved latch-up immunity.
• Provides reduced ICC and IOZ values by 50% compared to standard counterparts.
• Guarantees pin-to-pin skew AC performance for precise timing applications.

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering code suffix against manufacturer documentation to confirm package type and tape/reel availability. Ensure compatibility with existing PCB footprints for the SOIC-20 variant. Confirm that the component meets required environmental standards such as RoHS compliance before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-density buffering with low noise characteristics is required. The Quiet Series technology offers faster propagation delays than standard ACT240 devices while maintaining lower power consumption. Consider the 3-STATE capability for bus-oriented designs requiring multiple drivers on shared lines.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74AC logic family, specifically designed as an octal buffer/line driver. It is part of the broader 74ACQ/ACTQ Quiet Series lineup developed by Fairchild Semiconductor (now onsemi). The device serves as a specialized solution for digital systems needing robust signal integrity and reduced electromagnetic interference during simultaneous switching events.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include the 74ACTQ240SCX for 5V-only applications. Standard equivalents like the 74AC240SCX may be used if noise specifications are less critical. Verify pinout compatibility and ensure voltage level requirements match the target system design.