CY74FCT240CTQCTG4

Overview

The CY74FCT240CTQCTG4 is an octal buffer and line driver from the FCT logic series, manufactured by Texas Instruments. It features eight inputs and three-state outputs with inverted polarity. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical parameters include a high-level output current of -32 mA and a low-level output current of 64 mA. Propagation delay is specified at 8 ns when operating at 5 V. The component is housed in a QSOP-20 package and supports surface mount installation.

Feature Summary

• Provides tri-state control for bus isolation applications
• Features inverted logic polarity for signal inversion
• Supports CMOS logic compatibility within the FCT family

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffering
• Multiplexer and demultiplexer input/output switching

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as documented by the manufacturer. Confirm the package type matches the QSOP-20 specification rather than standard SOIC variants. Ensure the ordering part number aligns exactly with the required pinout and electrical characteristics before procurement.

Selection Notes

Select this component for designs requiring octal data buffering with active-low enable functionality. The FCT series offers speed comparable to LS-TTL but with CMOS power consumption. Verify that the load capacitance requirements do not exceed the specified limits for the desired propagation delay performance.

Part Context

This part belongs to the CY74FCT240T family of octal buffers. It serves as a non-inverting or inverting driver depending on the specific variant, with this model providing inverted outputs. It is designed for high-speed digital systems requiring robust drive capability and noise immunity.

Replacement Considerations

The CY74FCT240TQCT is a compatible variant within the same family. Verify pin compatibility and electrical specifications before substitution.