MM74HC574SJX

Flip Flops Overview

The MM74HC574SJX is an octal 3-state noninverting D flip-flop manufactured by onsemi. It belongs to the HC logic series and utilizes a 20-SOP surface-mount package. The device operates within a supply voltage range of 2 V to 6 V and supports a minimum operating temperature of -40°C and a maximum of +85°C. Key electrical parameters include a propagation delay of 155 ns, with high-level and low-level output currents rated at -7.8 mA and 7.8 mA respectively. The component features single-ended inputs and outputs.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type edge-triggered flip-flops within a single integrated circuit.
• Three-state output capability allows for direct interfacing with CMOS, NMOS, and TTL loads while enabling bus-oriented systems.
• Data storage functionality remains active even when outputs are disabled, facilitating data retention during high-impedance states.

Flip Flops Applications

• Bus-oriented memory register implementations
• Offset registers in digital signal processing circuits
• General-purpose parallel-to-serial conversion tasks

Flip Flops Procurement Notes

Verify current availability status as this component is designated as obsolete and subject to discontinuation by the manufacturer. Confirm that the 20-SOP package dimensions align with existing PCB footprints. Ensure compliance with RoHS requirements if applicable to the target assembly. Review technical specifications against system voltage and timing constraints before finalizing procurement decisions.

Flip Flops Selection Notes

Select this component for applications requiring standard HC logic performance with a wide supply voltage range. Consider the 155 ns propagation delay when designing high-speed timing circuits. The 20-SOP package offers a compact solution for space-constrained designs. Evaluate the 7.8 mA drive capability against load requirements to ensure signal integrity across connected interfaces.

Flip Flops Part Context

This part is a member of the MM74HC574 family, which includes variants such as MM74HC574MTC. While sharing identical logical functions, differences exist in packaging formats like TSSOP versus SOP. The SJX suffix specifically denotes the SOP-20 surface-mount configuration. All variants maintain compatibility with standard CMOS outputs and support LSTTL loads when pull-up resistors are utilized.

Flip Flops Replacement Considerations

• MC74HC574ADTR2G