74AC273SC

Overview

The onsemi 74AC273SC is an octal D-type flip-flop belonging to the 74AC logic series. It features eight edge-triggered D-type flip-flops with individual inputs and non-inverting Q outputs. The device operates within a supply voltage range of 2 V to 6 V, supporting single-ended input and output configurations. Key electrical parameters include a propagation delay of 13 ns and output current capabilities of ±24 mA. It utilizes a standard SOP-20 surface-mount package and functions as a non-inverting buffer suitable for high-speed digital applications.

Feature Summary

• Contains eight independent edge-triggered D-type flip-flops for parallel data storage
• Features buffered common clock and asynchronous master reset inputs for synchronized control
• Provides high drive capability with outputs sourcing and sinking 24 mA

Applications

• Microprocessor memory interface buffering
• Parallel data register storage in digital systems
• High-speed signal latching and timing control circuits

Procurement Notes

Verify that the specific part number matches the required SOP-20 package configuration. Confirm operational voltage requirements align with the 2 V to 6 V specification. Ensure compatibility with existing board layouts regarding pin assignments and thermal management for surface-mount installation.

Selection Notes

Select this component when eight-bit parallel data storage with high-speed performance is required. The 74AC series offers faster switching speeds compared to HC variants. Consider the ±24 mA output drive strength for direct load driving without additional buffers. Verify temperature range suitability for the intended operating environment.

Part Context

This component is part of the broader 74AC family of high-speed CMOS logic devices. It serves as a fundamental building block for sequential logic circuits requiring multiple flip-flops in a single package. The octal configuration reduces board space compared to using individual single-bit flip-flops.

Replacement Considerations

Direct substitutes include MC74AC273DTR2G (TSSOP-20) and MC74AC273DWR2G (SOIC-WB-20). Note that package dimensions differ; verify footprint compatibility before substitution. The 74ACTQ273SJ is a faster alternative but requires a 5 V supply only.