MC74ACT574NG

Flip Flops Overview

The MC74ACT574NG is an octal D-type flip-flop manufactured by onsemi, belonging to the 74ACT logic series. It features eight non-inverting D-type flip-flops with 3-state outputs in a 20-pin PDIP package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 11 ns at 5 V with 50 pF load, and output drive currents of ±24 mA. It supports a clock frequency up to 100 MHz and functions within an operating temperature range of -40°C to +85°C.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type flip-flops for parallel data storage
• 3-state outputs allowing direct connection to bus structures without external buffers
• High-speed CMOS technology enabling fast switching characteristics and low power consumption
• Non-inverting polarity ensuring output data matches input data upon clock activation

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Register files in microprocessor systems
• Buffering and latching digital signals in communication interfaces
• Timing control logic in embedded systems

Flip Flops Procurement Notes

Verify the specific suffix 'N' corresponds to the PDIP-20 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation, as historical batches may vary. Ensure the supplier provides valid traceability for the 74ACT series component. Check for obsolescence notices or lifecycle changes directly from onsemi before finalizing procurement plans.

Flip Flops Selection Notes

Select this component when high-speed performance is required alongside standard TTL-compatible input levels. The 74ACT series offers faster switching than HC variants while maintaining CMOS noise immunity. Consider the PDIP package only if through-hole mounting is mandatory for the mechanical design. Evaluate thermal dissipation requirements given the ±24 mA output capability during active operation.

Flip Flops Part Context

This part belongs to the widely adopted 74ACT family, designed to bridge the speed gap between older 74LS logic and newer AC technologies. The octal D-latch structure is a fundamental building block in digital electronics. The MC74ACT574NG specifically denotes the through-hole version, distinct from surface-mount equivalents like the DWG variant. It remains a standard choice for legacy system upgrades requiring robust timing control.

Flip Flops Replacement Considerations

Publicly confirmed substitute part numbers include CD74ACT574E from Texas Instruments. Verify pin compatibility and electrical specifications against the original datasheet before substitution. Ensure the alternative device meets the same voltage and temperature operating ranges.