74HCT240D

Overview

The 74HCT240D is an octal buffer and line driver manufactured by Toshiba Semiconductor and Storage. It operates within a supply voltage range of 4.5V to 5.5V. The device features eight non-inverting buffers with three-state outputs, housed in a 20-SOIC package. It supports a wide operating temperature range from -40°C to 125°C. The component provides high noise immunity and low power dissipation typical of CMOS technology.

Feature Summary

• Octal buffer configuration with three-state output capability
• High speed operation comparable to equivalent LSTTL devices
• CMOS construction ensuring low power consumption
• Wide operating temperature range for industrial applications

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmissions
• Transceiver applications

Procurement Notes

Verify the specific manufacturer part number against official Toshiba Semiconductor and Storage documentation to ensure authenticity. Confirm that the device meets required RoHS compliance standards for your region. Check for any specific ordering suffixes that may indicate tape and reel packaging versus cut tape options. Ensure the supplier provides valid traceability documents for quality assurance purposes.

Selection Notes

Select this component when an octal buffer with three-state outputs is required for bus systems. The HCT series ensures TTL compatibility while maintaining CMOS advantages. Consider the 20-SOIC package size for PCB layout constraints. Verify that the 4.5V to 5.5V supply voltage aligns with the system design requirements.

Part Context

This component belongs to the 74HCT logic family, which combines the speed of LSTTL with the low power of CMOS. It is designed for general-purpose digital applications requiring high noise immunity. The octal configuration allows for efficient handling of parallel data buses in complex digital systems.

Replacement Considerations

Check for pin-compatible alternatives from other manufacturers within the 74HCT family. Ensure substitute parts maintain the same voltage range and package dimensions. Verify functional equivalence regarding propagation delay and drive current capabilities before implementation.