74ACTQ240SC

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74ACTQ240SC is an octal buffer and line driver featuring inverting 3-state outputs. It operates within a supply voltage range of 4.5V to 5.5V, with maximum propagation delays of 9ns at 5V under 50pF load. The device provides high drive capability, sourcing and sinking 24mA per output. It is housed in a surface-mount SOIC-20 package and supports operating temperatures from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Inverting octal buffer and line driver design for improved PC board density
• 3-state outputs capable of driving bus lines or buffering memory address registers
• TTL-compatible inputs for the ACT variant ensuring logic level compatibility

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

This component is obsolete and no longer in production by Fairchild Semiconductor. Verification of current availability through secondary distributors or alternative manufacturers is required. Ensure that any substitute parts maintain pinout compatibility and electrical specifications suitable for the original application design constraints.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this part for applications requiring octal buffering with 3-state control in a surface-mount format. Verify that the system voltage aligns with the 4.5V to 5.5V operating range. Consider the inverting nature of the logic function during circuit design. Check if the SOIC-20 package fits the PCB layout requirements.

Buffers, Drivers, Receivers, Transceivers Part Context

The 74ACTQ240SC belongs to the AC/ACTQ Quiet Series family of logic ICs. This series is characterized by reduced ICC and IOZ values compared to standard counterparts. The device serves as a general-purpose digital buffer, often used in systems where bus isolation and signal integrity are critical for data transmission between components.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include the 74AC240SC and 74ACT240SC. These variants share similar functional descriptions as octal buffers with 3-state outputs. Verify specific parameter differences such as propagation delay and input threshold levels before substitution.