CY74FCT245DTQCT

Overview

The CY74FCT245DTQCT is an octal bus transceiver from the FCT logic series, manufactured by Texas Instruments. It features three-state outputs and bidirectional data transmission controlled by a single direction signal. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports TTL input and output levels. It is housed in a 20-pin SSOP package with dimensions of approximately 8.65 mm in length. The component functions across an operating temperature range of -40 °C to +85 °C.

Feature Summary

• Octal bus transceiver architecture providing eight independent bidirectional data channels
• Three-state outputs allowing direct connection to system buses without additional drivers
• Single control pin manages data flow direction between port A and port B

Applications

• High-speed data transfer on microprocessor-based systems
• Memory-to-memory or memory-to-I/O data transfers
• Bus-oriented communication links in industrial control systems

Procurement Notes

Verify the specific suffix DTQC against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required moisture sensitivity levels and RoHS compliance status for the intended manufacturing process. Cross-reference the full part number with current datasheets to validate lead-free status and environmental certifications before procurement.

Selection Notes

Select this component when designing circuits requiring high-speed bidirectional data transfer with low propagation delay. The FCT series offers CMOS performance with TTL-compatible inputs. Consider the SSOP package constraints for PCB layout and thermal management. Verify that the operating voltage range aligns with the system's power supply rails and that the drive strength meets load requirements.

Part Context

This device belongs to the CY74FCT family of fast CMOS logic components. It serves as a standard interface solution for connecting 8-bit data buses in digital systems. The FCT technology provides speed comparable to LS-TTL with lower power consumption typical of CMOS devices. It is widely used in embedded systems where reliable data routing is critical.

Replacement Considerations

Check for direct replacements such as the CY74FCT245ATQCT or other variants within the same FCT245 family. Ensure substitute parts match the SSOP-20 package and electrical characteristics. Verify that any alternative maintains the same pinout configuration and functional behavior to avoid redesign efforts.