M74HC574B1R

Flip Flops Overview

The M74HC574B1R is an octal D-type flip-flop with 3-state outputs manufactured by STMicroelectronics. It belongs to the HC logic series and utilizes C2MOS technology. The component features a single element with eight bits per element, operating on positive edge triggering. It supports a supply voltage range of 2V to 6V and operates within a temperature range of -40°C to +85°C. The device is housed in a 20-DIP package with a width of 0.300 inches (7.62mm). Key electrical parameters include a maximum propagation delay of 32ns at 6V with 150pF load, static current of 4µA, and output currents of 7.8mA for both high and low states.

Flip Flops Feature Summary

• Octal D-type flip-flop architecture with three-state outputs
• High-speed CMOS fabrication using sub-micron silicon gate C2MOS technology
• Positive edge-triggered data storage mechanism
• Non-inverting output configuration

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Buffering and latching digital signals
• General-purpose register applications in embedded systems
• Data acquisition system interfaces

Flip Flops Procurement Notes

Verify component authenticity through authorized channels as the part status is listed as obsolete. Confirm package integrity and pin alignment for the 20-DIP form factor. Check RoHS compliance documentation against specific project requirements. Ensure replacement strategies are evaluated due to end-of-life status. Validate datasheet revisions for any parameter updates prior to final design approval.

Flip Flops Selection Notes

Select this component when an octal storage element with tri-state control is required in through-hole designs. Consider the 2V to 6V operating range for compatibility with standard logic levels. Evaluate the 32ns propagation delay against system timing constraints. Compare against surface-mount alternatives if board space is limited. Verify thermal dissipation capabilities within the specified ambient temperature range.

Flip Flops Part Context

This part is part of the M74HC574 family, which includes variants like M74HC574RM13TR in SOIC packaging. It serves as a digital storage solution within the broader 74HC logic ecosystem. The DIP package distinguishes it from tape-and-reel versions intended for automated assembly processes.

Flip Flops Replacement Considerations

Direct substitutes include SN74HC574DWR from Texas Instruments and 74HC574D,653 from Nexperia. Other options are CD74HC574M96 and MC74HC574ADWG from respective manufacturers.