74VHCT240AN

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74VHCT240AN is an octal buffer and line driver belonging to the VHCT logic series. It features eight inverting outputs with three-state capability, housed in a PDIP-20 package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a high-level output current of -8 mA and a low-level output current of 8 mA. Static current consumption is specified at 4 uA. The propagation delay is 8.8 ns at 5 V. It supports through-hole mounting and functions within a temperature range of -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight independent inverting channels for signal buffering and line driving applications.
• Three-state output design allowing multiple drivers to share bus lines without electrical contention.
• VHCT technology ensures CMOS compatibility while accepting TTL-compatible input levels.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and address drivers
• Clock distribution and buffering
• Carry propagation in high-speed counters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity and datasheet revisions when sourcing this part. Note that the 74VHCT240AN is listed as obsolete or discontinued by the manufacturer. Confirm availability of equivalent active replacements if long-term supply stability is required for production designs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring octal buffering with TTL-compatible inputs and CMOS outputs. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range. Verify that the PDIP-20 through-hole package aligns with the PCB layout constraints and assembly processes.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the VHCT logic family, which bridges the gap between standard CMOS performance and TTL input compatibility. It serves as a robust solution for interfacing between different logic families in mixed-voltage systems, offering improved noise immunity and speed compared to older HC/HCT variants.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for active equivalents such as MC74VHCT240ADTRG or MM74HCT240MTCX. Verify pinout compatibility and electrical specifications before substitution.