CY74FCT240ATQCTG4

Overview

The CY74FCT240ATQCTG4 is an octal buffer and line driver manufactured by Texas Instruments within the FCT logic series. It features eight inverting inputs with three-state outputs, housed in a 20-pin QSOP package. The device operates on a single 5V supply ranging from 4.75 V to 5.25 V. Key electrical specifications include a propagation delay of 4.8 ns at 5 V, high-level output current of -32 mA, and low-level output current of 64 mA. It supports surface mount installation and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Provides octal buffering with inverting logic functionality for signal conditioning.
• Features three-state outputs allowing direct connection to bus-oriented systems.
• Utilizes CMOS technology for low static power consumption and high noise immunity.

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• High-performance register files

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS adherence when sourcing. Confirm the QSOP-20 package variant matches the target PCB footprint requirements. Ensure the operating voltage range aligns with the system's 5V logic levels. Check humidity sensitivity handling procedures during assembly to prevent moisture damage.

Selection Notes

Select this component for applications requiring octal data buffering with inversion capabilities. The three-state feature facilitates efficient bus management in complex digital designs. Consider the 4.8 ns propagation delay for timing-critical paths. The wide operating temperature range suits industrial or automotive environments where thermal stability is essential.

Part Context

This part belongs to the CY74FCT240T family of octal buffers. The 'G4' suffix typically denotes environmental compliance, specifically lead-free construction. It serves as a standard interface component in digital logic systems, bridging microprocessors with peripheral devices or memory modules via standardized bus architectures.

Replacement Considerations

The CY74FCT240ATQCT is a compatible alternative within the same functional family. Verify pinout compatibility and electrical characteristics before substitution. Ensure the replacement maintains the required three-state output behavior and inverting logic polarity.