74AC574SJ

Overview

The onsemi 74AC574SJ is an octal D-type flip-flop featuring three-state outputs, designed for high-speed digital applications. It operates within a supply voltage range of 2V to 6V and supports surface-mount installation in a 20-SOIC package. The device exhibits a propagation delay of 13.5 ns, with output drive capabilities of -24 mA (high) and 24 mA (low). It functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Octal D-type edge-triggered flip-flop architecture
• Three-state non-inverting outputs
• Wide operating voltage range from 2V to 6V

Applications

• High-speed data buffering
• Register storage in digital systems
• Clock domain crossing interfaces

Procurement Notes

Verify the specific suffix 'SJ' against the official datasheet to confirm the SOP-20 package variant. Confirm RoHS compliance status through current manufacturer documentation. Check for obsolescence notices or PCN updates prior to final design approval.

Selection Notes

Select this component when a wide voltage range including 2V operation is required alongside moderate speed performance. Compare against LVX series for lower power needs or ACT series for higher drive strength at 5V. Ensure the SOP-20 footprint matches the PCB layout requirements.

Part Context

This part belongs to the standard 74AC logic family, offering faster switching speeds than HC variants while maintaining CMOS compatibility. It serves as a fundamental building block for sequential logic circuits requiring parallel data storage and controlled output tri-stating.

Replacement Considerations

Public confirmed substitutes include MC74AC574DWG and MM74HC574SJX. Verify pinout and electrical characteristics match before substitution.

FAQ

What is the maximum output current capability?

The device provides a low-level output current of 24 mA and a high-level output current of -24 mA.

Does the 74AC574SJ have tri-state outputs?

Yes, it features three-state outputs controlled by an input line.