74HCT240FPV-E

Overview

The SN74HCT240FPV-E is a dual 4-bit bus driver manufactured by Renesas Electronics Corporation, belonging to the HCT logic family. It features inverted outputs with three-state capability and operates within a supply voltage range of 4.5V to 5.5V. The device provides high noise immunity and low power consumption typical of CMOS technology. It is housed in a 20-pin plastic DIP package designed for through-hole mounting. The component supports an operating temperature range from -40°C to +85°C and complies with RoHS standards.

Feature Summary

• Dual 4-bit configuration providing eight independent signal paths
• Inverted output polarity for logical inversion applications
• Three-state outputs allowing isolation when disabled
• High noise immunity compatible with standard TTL levels

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmissions
• I/O adapters

Procurement Notes

Verify the specific suffix 'E' against the manufacturer's current datasheet to confirm environmental compliance status and pinout compatibility. Ensure the ordering part number matches the exact package style required for your PCB footprint. Cross-reference the manufacturer code to distinguish between original Renesas production and any authorized second-source equivalents.

Selection Notes

Select this component when a dual 4-bit inverting buffer with three-state control is required for 5V logic systems. The HCT series ensures compatibility with standard TTL inputs while offering CMOS performance benefits. Consider the 20-pin DIP package constraints for through-hole assembly processes and verify that the required drive current meets the load specifications of the destination circuitry.

Part Context

This part belongs to the widely used 74HCT logic family, known for bridging the gap between older TTL standards and modern CMOS technologies. The 240 designation specifically indicates a dual 4-bit bus driver with inverted outputs. Renesas continues to support this legacy component for industrial and consumer applications requiring reliable digital signal buffering and direction control.

Replacement Considerations

Direct pin-compatible substitutes include the SN74HCT240N from Texas Instruments and the HD74HC240P from Renesas, though HC series parameters may differ slightly. Verify electrical characteristics such as propagation delay and output current before substituting. Always check the latest manufacturer documentation for obsolescence notices or recommended upgrades.