SN74HC574APWR

Flip Flops Overview

The SN74HC574APWR is an octal edge-triggered D-type flip-flop with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features a maximum clock frequency of 40 MHz. The device exhibits a propagation delay of 31 ns at 6 V with 50 pF load, and static current consumption of 8 µA. Output drive capability is specified at ±7.8 mA. It is housed in a 20-TSSOP surface-mount package and supports an operating temperature range from -40°C to +85°C.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type flip-flops in a single integrated circuit
• Three-state outputs enable direct bus connection without requiring additional interface hardware
• Rising-edge triggering mechanism ensures precise data capture synchronized with clock signals
• Active-low clear input allows immediate reset of all flip-flop states regardless of clock activity

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• General-purpose register storage applications
• Bus-oriented memory systems
• Digital signal processing data latching

Flip Flops Procurement Notes

Verify the specific suffix 'APWR' against the manufacturer's official datasheet to confirm the exact package dimensions and thermal characteristics associated with this variant. Ensure that the ordering documentation explicitly references the SN74HC574APWR part number to avoid confusion with other packaging options such as PWR or ANSR. Cross-reference the RoHS compliance status and moisture sensitivity level with the latest production notices provided by Texas Instruments prior to final procurement.

Flip Flops Selection Notes

Select this component when an octal register with high-speed performance and bus-compatible outputs is required. The HC logic family offers compatibility with standard CMOS interfaces while maintaining low power consumption. Consider the 20-TSSOP package for space-constrained surface-mount designs. Evaluate the 40 MHz clock limit and 31 ns propagation delay against system timing requirements to ensure adequate setup and hold times are met during operation.

Flip Flops Part Context

This device belongs to the SN74HC574 series of octal D-type flip-flops. It serves as a fundamental building block for sequential logic circuits within digital systems. The component integrates eight individual storage elements, each equipped with a data input, clock input, and output enable control. Its design facilitates efficient data handling in microprocessor-based architectures and communication interfaces requiring temporary data retention.

Flip Flops Replacement Considerations

SN74HC574PWRG4

Flip Flops FAQ

What is the function of the active-low clear input?

The active-low clear input forces all eight flip-flop outputs to a low state immediately upon assertion, overriding both the clock and data inputs.

How does the three-state output benefit bus systems?

The three-state outputs allow multiple devices to share a common data bus by enabling high-impedance states when not actively driving signals, preventing electrical conflicts.