74VHC574SJ

Overview

The Fairchild Semiconductor 74VHC574SJ is an octal edge-triggered D-type flip-flop featuring three-state outputs, belonging to the VHC logic family. It operates within a supply voltage range of 2V to 3.3V and supports a maximum clock frequency of 115MHz at 5V with 50pF load. The device exhibits a propagation delay of 10.6ns under standard conditions. It utilizes a 20-SOIC surface-mount package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops in a single integrated circuit
• Three-state output capability allowing direct bus interfacing without additional buffer components
• High-speed performance suitable for demanding digital applications requiring rapid data latching

Applications

• Parallel-to-serial data conversion circuits
• Register storage elements in high-speed microprocessor systems
• Buffering and latch applications in communication interfaces

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm that the specific suffix matches the requested package type and operating temperature range. Ensure compliance with RoHS directives if required by project specifications. Validate lot traceability for quality assurance purposes before finalizing procurement orders.

Selection Notes

Select this component when low-voltage operation combined with high switching speed is required. The VHC series offers superior performance compared to standard HC logic while maintaining pin compatibility. Consider the 20-SOIC package dimensions for PCB layout constraints. Evaluate power consumption requirements against the specific application's voltage supply capabilities.

Part Context

This part belongs to the 74VHC logic family, designed for high-speed digital applications. It serves as a memory element within complex logic systems. The octal structure allows efficient handling of multi-bit data words. Integration into larger systems requires proper decoupling and signal integrity management.

Replacement Considerations

Equivalent parts include MC74VHC574DWR2G from onsemi. Verify pinout compatibility and electrical characteristics match the original design requirements before substitution.