CY74FCT240CTSOCT

Overview

The CY74FCT240CTSOCT is an octal buffer and line driver manufactured by Texas Instruments, belonging to the FCT logic series. It features inverting polarity with three-state outputs housed in a 20-SOIC package. 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. Static current is specified at 100 nA, while operating power consumption reaches 200 nA. Propagation delay is 8 ns at 5 V. The component supports surface-mount installation and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Provides eight input lines driving three-state outputs for signal buffering and line driving applications.
• Features inverting polarity to facilitate logical signal inversion within digital circuits.
• Utilizes CMOS technology within the FCT series for compatibility with standard logic interfaces.

Applications

• Memory address decoding systems requiring bus isolation
• Clock driver circuits for distributing timing signals
• Bus-oriented architectures needing tri-state control

Procurement Notes

Verify the specific suffix 'C' against the manufacturer's latest documentation to confirm pinout and electrical characteristics, as suffixes often denote package variations or temperature grades. Ensure the source document explicitly lists CY74FCT240CTSOCT as the active part number, noting that some distributors may list obsolete status or cross-reference alternatives like the AT variant. Confirm RoHS compliance details directly from the official datasheet rather than relying on third-party summaries.

Selection Notes

Select this component when an octal inverting buffer with three-state capability is required for 5V logic systems. The FCT series offers faster switching speeds compared to standard LS logic. Consider the SOIC-20 package constraints and the specific drive strength requirements of the load. Verify that the 8 ns propagation delay meets the system timing budget. Compare against non-inverting variants if signal phase preservation is necessary instead of inversion.

Part Context

This device is part of the broader 74FCT family of high-speed CMOS logic devices produced by Texas Instruments. The FCT series is designed to bridge the performance gap between older TTL technologies and newer CMOS standards, offering improved speed and lower power consumption. The CY74FCT240 specifically addresses applications requiring multiple buffered outputs with controllable state enablement for bus management.

Replacement Considerations

Public confirmed substitute part numbers include CY74FCT240ATSOCT. Verify functional equivalence regarding propagation delay and drive current before substitution.