74LVT574WMX

Overview

The Fairchild Semiconductor 74LVT574WMX is an octal D-type flip-flop featuring three-state outputs, manufactured in a 20-pin SOIC package. It operates within a supply voltage range of 2.7V to 3.6V and supports a maximum clock frequency of 190MHz. The device exhibits a typical propagation delay of 5.3ns at 3.3V with 50pF load, while maintaining low quiescent current of 4µA. Designed for surface mount applications, it functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Provides eight independent D-type storage elements with positive-edge triggering for synchronous data capture.
• Features three-state outputs that allow direct connection to bus-oriented systems without external drivers.
• Supports high-speed operation suitable for demanding digital logic applications requiring fast switching.

Applications

• Bus-oriented memory mapping systems
• Clock domain crossing synchronization circuits
• Parallel data buffering and register files

Procurement Notes

Verify the manufacturer origin carefully as Fairchild Semiconductor operations have transitioned. Confirm the specific lot date code and authenticity through authorized channels due to potential legacy stock variations. Ensure the package marking aligns with original Fairchild specifications rather than subsequent onsemi rebrands if strict provenance is required for compliance purposes.

Selection Notes

Select this component when designing systems requiring octal latching with bus-compatible outputs under low voltage conditions. Compare against SN74LVT574 variants from Texas Instruments for pin-to-pin compatibility and electrical equivalence. Consider the 20-SOIC footprint constraints and ensure thermal management meets the specified operating temperature limits for the target environment.

Part Context

This part belongs to the 74LVT logic family, characterized by low voltage TTL compatibility and high-speed performance. It serves as a standard solution for parallel data retention in embedded controllers and communication interfaces. The WMX suffix indicates the specific tape-and-reel packaging configuration for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers include SN74LVT574DWR from Texas Instruments which offers equivalent functionality and pinout compatibility for direct replacement in existing designs.