54FCT574ATLB

Overview

The IDT54FCT574ATLB is an octal edge-triggered D-type flip-flop manufactured using Fast CMOS technology. It features eight independent positive-edge triggered D-type flip-flops with three-state outputs, designed for high-speed data storage and bus interface applications. The device operates within a supply voltage range of 4.5V to 5.5V and supports military temperature ranges from -55°C to 125°C. It is housed in a 20-lead ceramic quad flatpack (CQCC20) package.

Feature Summary

• Octal configuration providing eight independent positive-edge triggered D-type flip-flops for parallel data storage
• Three-state outputs enabling direct connection to system buses without external buffers
• Fast CMOS construction ensuring low power consumption while maintaining high-speed performance

Applications

• High-speed data storage registers in military-grade computing systems
• Bus interface buffering for wide data paths requiring live insertion capabilities
• Parallel-to-serial conversion circuits in telecommunications equipment

Procurement Notes

Verify the specific suffix 'ATLB' against official manufacturer documentation to confirm pinout compatibility and electrical characteristics. Ensure the component meets MIL-STD-883 requirements if used in defense applications. Confirm RoHS status as historical IDT FCT parts may not be compliant. Validate package integrity upon receipt due to the ceramic construction.

Selection Notes

Select this component when an octal register with three-state outputs is required for high-speed digital logic. The military temperature rating makes it suitable for harsh environments where standard commercial parts would fail. Consider the CQCC20 package constraints regarding PCB layout and thermal management during the design phase.

Part Context

This part belongs to the IDT 54/74FCT family of fast CMOS logic devices. The 54 prefix indicates military temperature qualification, distinguishing it from the commercial 74 series. It serves as a fundamental building block for sequential logic circuits in advanced digital systems requiring reliable data latching at high frequencies.

Replacement Considerations

IDT54FCT574ATDB

FAQ

What is the trigger mechanism for the flip-flops?

The device uses a positive-edge triggering mechanism, meaning data is captured on the rising edge of the clock signal.

Does the device support live insertion?

Yes, the three-state outputs allow for power-off disable, permitting live insertion into powered systems without damaging the circuit.