MC74AC574DW

Flip Flops Overview

The MC74AC574DW is an obsolete octal D-type flip-flop manufactured by onsemi, belonging to the 74AC logic series. It features positive-edge triggering and three-state non-inverting outputs within a single element. The device operates on a supply voltage range of 2V to 6V and supports a maximum clock frequency of 95 MHz. Key electrical parameters include a maximum propagation delay of 9.5ns at 5V with 50pF load, output current capability of 24mA for both high and low states, and static current of 8µA. It utilizes a 20-SOIC surface-mount package with a width of 7.50mm and functions within an operating temperature range of -40°C to 85°C.

Flip Flops Feature Summary

• Octal D-type configuration with positive-edge clock triggering for synchronized data storage.
• Three-state non-inverting outputs allowing direct bus-oriented connections without external buffers.
• CMOS construction providing high noise immunity and low static power consumption.

Flip Flops Applications

• Parallel-to-serial or serial-to-parallel data conversion circuits
• Isolated buffer stages in digital signal processing systems
• General-purpose register implementations in microcontroller interfaces

Flip Flops Procurement Notes

This component is officially discontinued and no longer manufactured by onsemi. Procurement must rely on verified direct substitutes such as the MC74AC574DWG variant. Verify RoHS compliance status, as original units may not meet current environmental standards. Confirm package integrity and pin compatibility before integration into new designs.

Flip Flops Selection Notes

Select this part only for legacy system maintenance or replacement where exact pinout and timing characteristics are critical. Ensure design requirements align with the 2V–6V supply range and 9.5ns propagation delay. Consider thermal management within the specified -40°C to 85°C ambient range. Evaluate alternative active components if long-term supply stability is required.

Flip Flops Part Context

The MC74AC574DW belongs to the 74AC family of high-speed CMOS logic devices. It serves as an octal edge-triggered D-type flip-flop with three-state outputs. The device is designed for applications requiring parallel data storage and controlled output enablement. It replaces earlier 74LS equivalents with improved speed and lower power consumption while maintaining compatible logic levels.

Flip Flops Replacement Considerations

Direct substitute: MC74AC574DWG (onsemi). Verify functional equivalence and package dimensions. Check RoHS compliance differences between obsolete and replacement units.