CD74HCT273M

Overview

The CD74HCT273M is a high-speed CMOS logic octal D-type flip-flop manufactured by Texas Instruments. It features eight independent D-type flip-flops, each capable of storing one bit of binary data, triggered on the positive edge of the clock signal. The device includes a master reset input that asynchronously clears all outputs to a low state when activated. Designed for operation within a supply voltage range of 4.5V to 5.5V, it utilizes a 20-pin Small Outline Integrated Circuit (SOIC) package with a standard .4-inch width. The component supports an operating temperature range from -55°C to 125°C and exhibits a maximum propagation delay of 30ns at 4.5V with a 50pF load.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops for parallel data storage
• Positive-edge triggering mechanism synchronized with the clock input
• Master reset functionality for asynchronous clearing of all output states
• High-speed CMOS technology ensuring low power consumption and fast switching

Applications

• Parallel-to-serial data conversion circuits
• General-purpose register banks in digital systems
• Data buffering and temporary storage in microprocessor interfaces
• State holding elements in sequential logic designs

Procurement Notes

Verify the specific suffix 'M' corresponds to the 20-SOIC package variant during sourcing. Confirm RoHS compliance status as indicated in official datasheets. Ensure the supplier provides documentation matching the Texas Instruments part number exactly to avoid confusion with similar HCT series components or alternative packaging options.

Selection Notes

Select this component when an octal storage solution is required with HCT logic compatibility for direct interfacing with TTL-level inputs. Consider the 20-pin SOIC footprint for PCB layout constraints. Evaluate the 4.5V to 5.5V supply requirement against system power rails. Verify thermal performance requirements given the extended industrial temperature range capability.

Part Context

This device belongs to the Texas Instruments CD74HCT family of high-speed CMOS logic integrated circuits. The 74HCT series is designed to be pin-compatible and functionally equivalent to the older 74LS TTL series while offering CMOS advantages such as lower power dissipation and higher noise immunity. The octal flip-flop architecture is a standard building block in digital electronics for managing multi-bit data streams.

Replacement Considerations

Public confirmed substitute part numbers include SN74HCT273N and CD74HCT273E. These alternatives offer similar functional characteristics but may differ in package type or manufacturing origin. Verify electrical specifications and pinout compatibility before substitution.