MC74AC273DW

Flip Flops Overview

The MC74AC273DW is an octal D-type flip-flop from the onsemi 74AC logic series, housed in a 20-pin SOIC-WB package. It features eight edge-triggered D flip-flops with individual data inputs and true outputs, sharing a common buffered clock and asynchronous master reset. The device operates within a supply voltage range of 2 V to 6 V, supporting a maximum clock frequency of 175 MHz at 5 V. Key electrical parameters include a propagation delay of 9 ns at 5 V with 50 pF load, and output drive capabilities sourcing and sinking 24 mA. It functions reliably across an operating temperature range of -40°C to +85°C.

Flip Flops Feature Summary

• Contains eight positive-edge-triggered D-type flip-flops with independent data inputs and non-inverting Q outputs.
• Utilizes a common buffered Clock (CP) input for simultaneous data loading across all stages.
• Includes a buffered, asynchronous Master Reset (MR) input to clear all flip-flops simultaneously.
• Provides high-output current drive capability suitable for direct interfacing with buses or loads.

Flip Flops Applications

• Register files in microprocessor systems
• Shift registers for data serialization
• Memory buffer interfaces
• Parallel-to-serial conversion circuits

Flip Flops Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for the target assembly process. Cross-reference the ordering part number with the latest datasheet revision to confirm pinout compatibility and electrical characteristics before integration into design schematics.

Flip Flops Selection Notes

Select this component when an octal storage element with high-speed performance and strong drive capability is required. The 74AC series offers faster switching speeds than standard HC logic while maintaining CMOS power efficiency. Consider the ACT variant if TTL-compatible input thresholds are necessary for interfacing with legacy 5 V logic families. Verify that the SOIC-WB package fits the available PCB footprint and thermal constraints.

Flip Flops Part Context

This component belongs to the MC74AC273 family of octal D-type flip-flops manufactured by onsemi. It is part of the broader 74AC logic family, which provides advanced CMOS technology for high-speed digital applications. The device serves as a fundamental building block for sequential logic circuits, offering reliable data storage and transfer capabilities in integrated circuit form factors designed for surface-mount assembly.

Flip Flops Replacement Considerations

MC74AC273DWR2G: Same logical function and pinout, but specified in a tape-and-reel package format rather than cut-tape or tube. MC74ACT273DW: Similar octal D-flip-flop architecture with identical pin configuration, featuring TTL-compatible input thresholds instead of standard CMOS levels. Verify input voltage compatibility when substituting between AC and ACT variants.