74ACTQ240SJX

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74ACTQ240SJX is an inverting octal buffer and line driver featuring 3-state outputs. It belongs to the ACTQ series, designed for memory address driving, clock distribution, and bus-oriented transmission or reception applications. The device utilizes a 20-SOP package and operates with TTL-compatible inputs. Key electrical characteristics include output currents of 24mA source/sink capability and a maximum propagation delay of 9ns at 5V with 50pF load. It functions within a supply voltage range of 4.5V to 5.5V and supports a commercial operating temperature range of -40°C to 85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Inverting octal buffer and line driver design
• Three-state outputs for bus line driving
• TTL-compatible input levels
• High current drive capability

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized distributors or certified secondary market suppliers. Confirm RoHS compliance status and check for obsolescence notices from ON Semiconductor, which acquired Fairchild. Ensure the SOP-20 package matches your PCB footprint requirements. Validate lot codes against current manufacturing records to guarantee performance reliability.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-density PC board designs require octal buffering with reduced power consumption. The ACTQ series offers improved density compared to standard AC/ACT families. Consider the 3-state functionality for bidirectional bus architectures. Verify that the 24mA output drive meets the capacitive load requirements of the target bus lines.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is part of the 74ACTQ family, which provides enhanced performance over standard 74ACT logic. Fairchild Semiconductor was acquired by ON Semiconductor, affecting production and support channels. The 74ACTQ240 variant specifically targets applications requiring robust signal integrity in complex digital systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include the 74ACT240SC and 74ACTQ240SC from Fairchild/ON Semiconductor. Cross-vendor equivalents such as STMicroelectronics 74ACT240 may be compatible if pinouts and electrical specs align. Verify package compatibility for SOP-20 replacements.