CD74FCT574CTQM

Overview

The CD74FCT574CTQM is an octal edge-triggered D-type flip-flop with three-state outputs manufactured by Harris Corporation. It belongs to the FCT logic series and utilizes BICMOS technology. The device features a 20-SSOP package with a width of 3.90mm. It operates within a supply voltage range of 4.75V to 5.25V and supports a temperature range from -40°C to +85°C. Key electrical parameters include a propagation delay of 5.2ns, high-level output current of -32mA, and low-level output current of 64mA. It contains eight input lines and three-state output lines.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops in a single package.
• Three-state outputs allow direct connection to bus structures without additional interface hardware.
• Edge-triggered operation ensures data capture on the positive clock transition.
• BICMOS technology combines CMOS input compatibility with bipolar output drive capabilities.

Applications

• Parallel-to-serial data conversion circuits
• Buffering and latching in microprocessor systems
• Register files in digital signal processing applications

Procurement Notes

Verify the manufacturer designation as Harris Corporation for this specific part number, noting that Texas Instruments also produces similar FCT devices under different prefixes. Confirm the 20-SSOP package dimensions match the design footprint requirements. Ensure the operating temperature range meets the environmental specifications of the target application. Check RoHS compliance status through official documentation before procurement.

Selection Notes

Select this component when an octal register with three-state outputs is required for bus-oriented architectures. The FCT series offers speed comparable to LS TTL while maintaining CMOS noise immunity. Consider the 5.2ns propagation delay for timing analysis in high-speed digital designs. The wide output drive capability supports moderate capacitive loads typical in system interconnects.

Part Context

This device is part of the CY74FCT574T family of octal D-type flip-flops. It shares functional similarities with other FCT series registers but is distinguished by its Harris Corporation manufacturing origin and specific SSOP packaging. The component serves as a standard logic element for data storage and transfer in commercial and industrial electronic systems.

Replacement Considerations

The CD74FCT574CTQCT is a pin-compatible alternative from Texas Instruments offering identical logical functionality and electrical characteristics. Verify package tolerance alignment between SSOP variants from different manufacturers before substitution.

FAQ

What is the trigger type for the CD74FCT574CTQM?

The device uses positive edge triggering to capture input data on the rising edge of the clock signal.

Does the CD74FCT574CTQM have inverted outputs?

No, the outputs are non-inverting and feature three-state control for bidirectional bus operations.