74ACQ574PC

Overview

The onsemi 74ACQ574PC is an octal D-type flip-flop belonging to the ACQ logic family, housed in a 20-PDIP package. It features eight independent D-type flip-flops with positive-edge triggering and non-inverting outputs. The device operates within a supply voltage range of 2.0 V to 6.0 V, supporting standard CMOS input and output levels. It is designed for through-hole mounting and functions reliably across an extended industrial temperature range from -55°C to +125°C.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops per package
• Positive-edge triggered operation with non-inverting output polarity
• Extended industrial temperature rating supporting -55°C to +125°C operation

Applications

• Parallel data storage and buffering in digital systems
• Interface circuits between different logic families
• Shift register construction for serial-to-parallel conversion

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific lot traceability requirements prior to procurement. Ensure that the ordering suffix matches the required packaging format. Cross-reference the full part number against current obsolescence notices to confirm availability for long-term production needs.

Selection Notes

Select this component when extended temperature performance is required alongside AC speed characteristics. Compare propagation delay specifications against system timing constraints at the target operating voltage. Evaluate the 20-PDIP footprint against available PCB real estate. Consider power consumption differences relative to alternative logic families such as HC or ACT for low-power applications.

Part Context

This device belongs to the 74ACQ series, which combines the high-speed performance of AC logic with extended temperature capabilities. It serves as a robust solution for harsh environment applications where standard commercial-grade logic may fail. The octal architecture allows efficient space utilization in complex digital designs requiring multiple synchronized storage elements.

Replacement Considerations

Direct substitutes include other manufacturers' 74ACQ574 variants. Verify pin compatibility and electrical parameters before substitution. Check for equivalent temperature ratings and package dimensions to ensure mechanical fit.