CY74FCT2245CTQCT

Overview

The CY74FCT2245CTQCT is an octal bus transceiver manufactured by Texas Instruments, belonging to the FCT logic series. It features TTL-compatible input and output levels with a 3-state output configuration. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a propagation delay of 4.1 ns. It provides a high-level output current of -15 mA and a low-level output current of 12 mA. The component is housed in a QSOP-20 package and functions across a temperature range of -40 °C to +85 °C.

Feature Summary

• Octal bus transceiver architecture providing eight independent data channels for bidirectional communication.
• TTL-compatible input and output voltage levels ensuring interoperability with standard logic families.
• Three-state outputs allowing multiple transceivers to share a common data bus without interference.

Applications

• High-speed data bus architectures requiring non-inverting signal transmission.
• Memory mapping systems utilizing parallel data transfer interfaces.
• Control circuits managing bidirectional data flow between microprocessors and peripheral devices.

Procurement Notes

Verify the specific package designation matches the required QSOP-20 form factor for PCB layout compatibility. Confirm that the operating environment remains within the specified -40 °C to +85 °C thermal limits. Ensure power supply rails are strictly maintained between 4.75 V and 5.25 V to prevent functional degradation or electrical overstress during operation.

Selection Notes

Select this component when an octal width is required for system bus expansion. The FCT technology offers faster switching speeds compared to standard LS logic while maintaining CMOS power efficiency. Verify that the 4.1 ns propagation delay meets the timing constraints of the target application interface.

Part Context

This part belongs to the CY74FCT2245T family of octal bus transceivers. It serves as a bridge for parallel data transfer in digital systems. The device integrates internal circuitry to manage direction control and output enable signals efficiently.

Replacement Considerations

Cross-reference with other CY74FCT2245 variants offering different package options such as SOIC or PDIP if pin footprint adjustments are necessary. Ensure substitute parts maintain identical FCT logic characteristics and 3-state output capabilities.