CD74HCT574E

Overview

The CD74HCT574E is an octal edge-triggered D-type flip-flop manufactured by Texas Instruments. It features eight independent D-type flip-flops with three-state outputs, designed for bus-oriented applications. The device operates within a supply voltage range of 2V to 6V and accepts TTL-compatible inputs. Key electrical characteristics include a maximum propagation delay of 30ns at 5V and output drive capabilities of ±6mA. It is housed in a 20-pin DIP package suitable for through-hole mounting.

Feature Summary

• Octal configuration providing eight independent edge-triggered D-type flip-flops
• Three-state outputs designed for efficient bus-driven architectures
• TTL-compatible input logic levels ensuring broad compatibility
• Wide operating supply voltage range supporting various system requirements

Applications

• Buffer registers for data storage and transfer
• I/O port interfaces in embedded systems
• Bidirectional bus drivers for communication lines
• Working registers in digital processing circuits

Procurement Notes

Verify the specific suffix 'E' denotes the standard 20-pin DIP package variant. Confirm RoHS compliance status as manufacturing processes may update environmental certifications over time. Ensure the supplier provides official datasheets matching the exact part number to avoid pinout or electrical specification mismatches during integration.

Selection Notes

Select this component when an octal register with high-speed tri-state outputs is required. It is suitable for designs needing TTL input compatibility alongside CMOS performance. Consider the DIP package for prototyping or legacy board layouts. Evaluate propagation delay specifications against system clock speeds to ensure timing margins are met for reliable data capture.

Part Context

This device belongs to the 74HCT series of high-speed CMOS logic integrated circuits. It serves as a fundamental building block for sequential logic design within digital electronics. The octal structure allows for parallel data handling, making it essential for memory interfacing and control signal management in complex microprocessor-based systems.

Replacement Considerations

Compatible substitutes include SN74HCT574N and CD74HC574E, provided pinouts and electrical characteristics align with the original design requirements. Verify that alternative sources offer identical package dimensions and thermal properties to maintain mechanical fit.