CY74FCT240CTQCT

Overview

The CY74FCT240CTQCT is an octal buffer and line driver manufactured by Texas Instruments, belonging to the FCT logic series. It features eight inverting inputs with three-state outputs housed in a QSOP-20 package. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical parameters include a propagation delay of 8 ns at 5 V, high-level output current of -32 mA, and low-level output current of 64 mA. Static current is specified at 100 nA, with a maximum operating temperature of +85 °C.

Feature Summary

• Provides eight inverting buffer channels with tri-state output capability for bus isolation
• CMOS technology ensures low static power consumption during operation
• Compatible with TTL input levels while utilizing CMOS output characteristics

Applications

• Memory address decoding circuits
• Clock drivers and buffering
• Bus-oriented transmissions

Procurement Notes

Verify the specific suffix 'CTQCT' against the manufacturer's official datasheet to confirm the exact package variant (QSOP-20) and tape-and-reel configuration. Ensure compatibility with existing PCB footprints and reflow soldering profiles. Confirm RoHS compliance status through the latest environmental documentation provided by Texas Instruments before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring octal inverting buffers with high drive strength and three-state control. The FCT series offers speed comparable to LS-TTL with lower power dissipation. Consider the QSOP-20 package constraints regarding thermal performance and board space. Verify that the 5V supply rail aligns with the system's voltage requirements and that the 8 ns propagation delay meets timing specifications.

Part Context

This part is part of the CY74FCT240T family of octal buffers. It serves as a digital logic interface component designed for high-speed data transmission applications. The FCT series represents Fast CMOS technology, bridging the performance gap between standard CMOS and Low-power Schottky TTL logic families.

Replacement Considerations

Check for direct pin-compatible alternatives such as the CY74FCT240ATSOCT or other FCT-series octal buffers from Texas Instruments. Verify functional equivalence regarding inversion polarity and output drive capabilities before substitution.