CD74FCT273M

Overview

The CD74FCT273M is an octal D-type flip-flop manufactured by Harris Corporation, belonging to the FCT logic series. It features eight positive-edge-triggered D flip-flops with true outputs in a single functional unit. The device utilizes CMOS technology and is housed in a 20-pin PDSO (SOIC) package. It operates within a temperature range of -40°C to 85°C and supports a load capacitance of 50 pF. The component is not RoHS compliant.

Feature Summary

• Provides octal data storage via eight positive-edge-triggered D flip-flops
• Features true non-inverting outputs for direct signal interfacing
• Incorporates bus hold inputs to eliminate the need for external pull-up resistors

Applications

• Octal register circuits
• Bus-oriented memory mapping
• Parallel-to-serial data conversion interfaces

Procurement Notes

Verify manufacturer origin as Harris Corporation or authorized successor entities like Texas Instruments due to corporate acquisitions. Confirm RoHS compliance status as the base model is typically non-compliant. Validate package integrity for SOIC-20 form factor and ensure operating temperature ratings match system requirements of -40°C to 85°C before procurement.

Selection Notes

Select this component for applications requiring high-speed octal latching with TTL-compatible inputs. Compare propagation delay specifications against system timing constraints. Ensure voltage supply levels align with the FCT series requirements. Consider pin compatibility if replacing legacy Harris components in existing PCB layouts.

Part Context

This part belongs to the CD74FCT family of high-speed CMOS logic devices originally developed by Harris Semiconductor. The FCT series bridges the performance gap between standard TTL and advanced CMOS technologies. Texas Instruments acquired Harris Semiconductor's logic business, affecting current production sources and datasheet availability.

Replacement Considerations

CD74FCT273ME4 (Texas Instruments)