CY74FCT2245ATPC

Overview

The CY74FCT2245ATPC is an octal bus transceiver from the FCT logic series, manufactured by Texas Instruments. It features eight non-inverting channels with three-state outputs housed in a 20-pin PDIP package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports TTL input and output levels. Key electrical parameters include a propagation delay of 4.6 ns, a low-level output current of 12 mA, and a high-level output current of -15 mA. It functions across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides bidirectional data transmission via eight independent non-inverting channels.
• Features three-state outputs to facilitate direct connection to system buses without additional drivers.
• Incorporates internal series damping resistors to minimize signal reflections during switching.

Applications

• High-speed memory mapping systems
• Clock drivers and buffer circuits
• Control signal routing on backplanes

Procurement Notes

Verify the specific package type and pinout configuration against the target PCB footprint before procurement. Confirm that the required operating temperature range aligns with the specified industrial limits. Ensure compatibility with the system's voltage levels and signal integrity requirements regarding the integrated damping resistors.

Selection Notes

Select this component when an octal bus transceiver with integrated damping is required for noise reduction. Compare performance metrics such as propagation delay and drive strength against alternative FCT series devices. Consider the through-hole packaging constraint if surface-mount alternatives are not suitable for the assembly process.

Part Context

This part belongs to the CY74FCT2245T family of octal bus transceivers. It shares functional similarities with other FCT series logic but is distinguished by its specific PDIP-20 packaging and built-in damping resistor architecture designed for improved signal quality in high-speed digital applications.

Replacement Considerations

Check for updated revisions or equivalent parts from the same manufacturer offering different package options. Verify cross-compatibility with other octal bus transceivers if redesigning for space or cost constraints.