CD74HCT240EG4

Overview

The CD74HCT240EG4 is an octal buffer and line driver manufactured by Texas Instruments, belonging to the HCT logic family. It features eight independent buffers with three-state outputs, allowing for effective signal buffering and driving in digital circuits. The device operates within a supply voltage range of 4.5V to 5.5V and supports a load capacitance of up to 50pF. It is housed in a 20-pin TSSOP package with a width of 4.40mm. The component functions across an extended temperature range from -40°C to 85°C, ensuring reliable performance in various industrial applications.

Feature Summary

• Octal configuration providing eight independent buffer channels for high-density signal routing
• Three-state output capability enabling direct connection to bus structures without external switches
• CMOS technology compatible with standard TTL logic levels for seamless system integration

Applications

• High-speed data bus buffering in computer systems
• Clock distribution networks requiring signal integrity maintenance
• Memory interface drivers for address and data lines

Procurement Notes

Verify the specific suffix 'EG4' against the manufacturer's current datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the TSSOP-20 package dimensions align with your PCB footprint. Confirm RoHS compliance status if required by your manufacturing standards. Cross-reference the ordering information with official Texas Instruments documentation to avoid discrepancies in lead times or packaging quantities.

Selection Notes

Select this component when an octal buffer with three-state control is required for 5V logic systems. The HCT series ensures compatibility with standard TTL inputs while offering CMOS noise immunity. Consider the TSSOP package size for space-constrained designs. Verify that the operating temperature range meets your environmental specifications. Compare propagation delay and drive current requirements against other logic families if higher speed or power is needed.

Part Context

This part belongs to the CD74HCT240 family of octal buffers and line drivers. It is designed for high-speed CMOS applications requiring multiple buffered outputs. The device is commonly used in digital systems where signal isolation and bus driving are necessary. It complements other logic components like inverters and gates within the same HCT series for complete system design.

Replacement Considerations

Check for SN74HCT240PWR as a potential alternative with similar functionality and package type. Verify pin compatibility and electrical parameters before substitution.