CD74AC574MG4

Overview

The CD74AC574MG4 is an octal D-type flip-flop from the Texas Instruments AC logic family. It features eight non-inverting D-type flip-flops with three-state outputs, packaged in a 20-SOIC (0.295 inch, 7.50mm width) surface-mount package. The device operates within a supply voltage range of 2V to 6V and supports a maximum clock frequency of 250 MHz. Key electrical parameters include a propagation delay of 135 ns, high-level output current of -24 mA, and low-level output current of 24 mA. It functions at positive edge triggering and maintains a static current of 4 µA.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops for parallel data storage
• Three-state outputs enable direct bus connections without external buffers
• Positive-edge triggered operation ensures precise timing synchronization
• CMOS input structure with non-inverting logic functionality

Applications

• High-speed data latching in digital communication systems
• Parallel-to-serial conversion circuits
• Buffering and driving loads on system buses
• Register files in microprocessor-based designs

Procurement Notes

Verify the specific manufacturer part number against official Texas Instruments documentation to ensure authenticity. Confirm that the component meets RoHS3 compliance standards as indicated in public records. Check for any specific environmental or export classification requirements such as EAR99 status before finalizing procurement orders. Ensure the supplier provides valid traceability documents.

Selection Notes

Select this component when an octal D-type flip-flop with three-state outputs is required in a surface-mount design. The AC logic family offers a balance between speed and power consumption suitable for general-purpose digital applications. Consider the 20-SOIC package dimensions for PCB layout constraints. Verify that the operating temperature range of -55°C to +125°C aligns with the intended application environment.

Part Context

This component belongs to the CD74AC574 series, which represents Texas Instruments' implementation of the standard 74AC logic family. The 'MG4' suffix typically denotes a specific tape-and-reel packaging variant compliant with RoHS standards. It serves as a digital storage element within the broader category of logic integrated circuits, specifically designed for flip-flop applications requiring high-speed performance.

Replacement Considerations

Publicly confirmed substitute part numbers include SN74AC374DWR from Texas Instruments. Other potential alternatives found in distributor listings include MC74AC574DWG and MC74AC574DWR2G from onsemi. Verify pin compatibility and electrical specifications before substitution.