CY74FCT2245ATQCT

Overview

The CY74FCT2245ATQCT is an octal bus transceiver from the FCT logic series, manufactured by Texas Instruments. It features eight channels with non-inverting polarity and TTL-compatible input and output levels. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum propagation delay of 4.6 ns at 5 V. It provides three-state outputs with low-level output current capability of 12 mA and high-level output current of -15 mA. The component is housed in a SOIC-20 surface-mount package and functions reliably across an operating temperature range of -40 °C to +85 °C.

Feature Summary

• Octal configuration providing eight bidirectional data channels for efficient bus interfacing
• Three-state outputs allowing direct connection to system buses without additional drivers
• TTL-compatible input and output levels ensuring compatibility with standard logic families

Applications

• High-speed data bus architectures requiring bidirectional signal transfer
• Memory mapping circuits utilizing octal data paths
• I/O port expansion systems connecting microprocessors to peripheral devices

Procurement Notes

Verify the specific suffix 'ATQCT' against the manufacturer's official documentation to confirm the exact tape-and-reel packaging and moisture sensitivity classification. Ensure the order matches the required SOIC-20 package variant. Cross-reference the part number with the latest datasheet revision to confirm compliance with current environmental standards and electrical specifications before finalizing procurement.

Selection Notes

Select this component when an octal bus transceiver with three-state outputs and TTL compatibility is required. The FCT series offers faster switching speeds compared to standard CMOS alternatives. Consider the SOIC-20 package dimensions and thermal characteristics for PCB layout. Verify that the system voltage remains within the 4.75 V to 5.25 V range to ensure proper operation and signal integrity.

Part Context

This device belongs to the CY74FCT2245T family of octal bus transceivers. It shares functional similarities with other FCT series components but is distinguished by its specific pinout and damping resistor integration. The family is designed for high-performance digital applications requiring reliable data transmission across multiple lines in complex electronic systems.

Replacement Considerations

Publicly confirmed substitute part numbers include CY74FCT2245ATSOC and CY74FCT2245ATOCT. These variants share the same core functionality and logical operations. Verify package compatibility and electrical parameters before substitution.