CD74FCT2240ATM

Overview

The CD74FCT2240ATM is a bus driver from the FCT series, manufactured by Harris Corporation. It features two independent functions, each handling four bits of data with true output polarity. The device utilizes CMOS technology and is housed in a PDSO20 package. It operates within a temperature range of -40°C to 85°C and supports a load capacitance of 50 pF.

Feature Summary

• Provides high-speed buffering for digital signals using FCT logic family characteristics.
• Features three-state outputs to allow multiple drivers on a shared bus structure.
• Includes integrated series resistors to control signal overshoot and ringing.

Applications

• Parallel bus interface buffering
• Clock distribution networks
• Data line isolation

Procurement Notes

Verify the manufacturer origin as Harris Corporation or its successors, noting that RoHS compliance status may be non-compliant depending on production date. Confirm the specific suffix 'ATM' corresponds to the required tape-and-reel packaging and temperature grade. Ensure the component matches the original FCT specifications rather than later generic equivalents.

Selection Notes

Select this component when a bidirectional or unidirectional buffer with controlled impedance is required. The inclusion of series resistors makes it suitable for applications demanding signal integrity management without external components. Compare against standard FCT drivers if series resistance is not needed.

Part Context

This part belongs to the Harris CD74FCT series, which bridges the performance gap between standard TTL and CMOS logic. Harris Corporation was a key developer of Fast CMOS (FCT) technology before its acquisition by Intersil and subsequently Renesas. This specific model represents the buffered output variant of the transceiver family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.