CY74FCT652TQCT

Overview

The CY74FCT652TQCT is an octal bus transceiver and register manufactured by Texas Instruments, belonging to the FCT logic series. It features a single circuit with eight channels and provides three-state outputs. 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 specifications include a propagation delay of 9 ns, a low-level output current of 64 mA, and a high-level output current of -32 mA. It functions as a non-inverting registered transceiver with a typical operating supply current of 100 uA.

Feature Summary

• Integrates bus transceiver and register functionality in a single package
• Provides bidirectional data transfer capability with three-state outputs
• Features TTL-compatible input and output voltage levels for system interfacing

Applications

• High-speed data buffering in computer systems
• Clock drivers and buffer circuits
• Control signal routing in embedded architectures

Procurement Notes

Verify the manufacturer designation on official documentation, as sources may list Texas Instruments or Cypress Semiconductor due to corporate history. Confirm the specific suffix indicates the QSOP-24 surface mount package and reel or cut tape availability. Ensure compliance requirements such as RoHS status are checked against the latest datasheet before procurement.

Selection Notes

Select this component when an octal registered bus interface with TTL compatibility is required. The 9 ns propagation delay suits moderate-speed applications. Verify that the 5V supply constraint and 64 mA drive capability meet the load requirements. Consider the QSOP-24 package dimensions for PCB layout constraints compared to alternative pinouts.

Part Context

This part belongs to the FCT (Fast CMOS Technology) family, designed for high-speed operation with CMOS power consumption. The CY74FCT652 specifically combines latching and transmission functions, allowing data to be captured and held while being routed bidirectionally. This integration reduces component count in designs requiring temporary storage and direction control for wide data buses.

FAQ

Is the CY74FCT652TQCT inverting or non-inverting?

The device is non-inverting, meaning the output logic state matches the input logic state.

What is the maximum low-level output current?

The maximum low-level output current is specified as 64 mA.