74AC240SC

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74AC240SC is an octal buffer and line driver featuring inverting 3-STATE outputs. It operates within a supply voltage range of 2V to 6V, with a maximum quiescent current of 4µA at 25°C. The device provides symmetrical output impedance, sourcing and sinking a minimum of 24mA. Propagation delays are specified as 8ns at 3.3V and 6.5ns at 5V. It utilizes a 20-pin SOIC package and supports surface mount installation.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Inverting 3-STATE outputs designed for bus-oriented applications
• High-speed performance with balanced propagation delays
• Low power dissipation with reduced static current
• TTL-compatible inputs for broad logic integration

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific manufacturer source, as Fairchild Semiconductor's logic products were acquired by onsemi. Confirm RoHS compliance status, as some listings indicate non-compliance. Ensure the SOIC-20 package matches the design footprint. Check for obsolescence or lifecycle changes given the corporate transition.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring high-speed octal buffering with low power consumption. The 2V to 6V operating range offers flexibility for various logic families. Verify that the 24mA drive capability meets the load requirements. Consider the inverting polarity when designing signal paths.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74AC logic family, known for high speed and low power. It is functionally compatible with the standard 74LS240 series but offers improved performance metrics. The device serves as a critical interface component in digital systems for signal isolation and driving.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74ACT240SC is a direct functional substitute with TTL-compatible inputs. Other manufacturers such as STMicroelectronics and onsemi produce equivalent parts under the same base number.