MM74HCT74SJ

Flip Flops Overview

The MM74HCT74SJ is a dual D-type flip-flop integrated circuit manufactured by Fairchild Semiconductor, belonging to the 74HCT logic series. It features two independent positive-edge-triggered D flip-flops with direct clear and preset inputs within a single package. The device utilizes advanced silicon-gate CMOS technology, ensuring high-speed operation while maintaining low power consumption typical of CMOS devices. It operates with a supply voltage range of 4.5V to 5.5V and provides TTL-compatible input levels. The component is housed in a 14-pin Small Outline Package (SOP), suitable for surface-mount applications. Key electrical parameters include a propagation delay of 25ns at 5V with 50pF load, output currents of 7.2mA, and an operating temperature range from -40°C to +85°C.

Flip Flops Feature Summary

• Dual D-type flip-flops with positive-edge triggering
• Direct clear and preset inputs for immediate state control
• TTL-compatible input levels for seamless interface
• High drive current outputs for bus driving capability

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations
• Timing and synchronization logic
• General-purpose digital storage elements

Flip Flops Procurement Notes

Verify the specific suffix 'SJ' against the manufacturer's official datasheet to confirm pinout compatibility and package dimensions. Ensure the component meets RoHS compliance requirements if applicable to your assembly process. Check for obsolescence status as Fairchild products may have transitioned to ON Semiconductor part numbers. Confirm that the supply voltage range aligns with your system's 5V logic standards before integration.

Flip Flops Selection Notes

Select this component when a dual D-flip-flop solution with TTL-compatible inputs is required in a surface-mount format. The 74HCT series offers speed comparable to low-power Schottky devices while retaining CMOS power efficiency. Consider the 14-pin SOP package constraints for PCB layout. This part is suitable for designs needing direct clear and preset functionality without additional gating logic.

Flip Flops Part Context

The MM74HCT74SJ belongs to the widely adopted 74HCT family of logic ICs, designed for high-speed CMOS applications requiring TTL compatibility. Fairchild Semiconductor produced this series to bridge the gap between older TTL performance and modern CMOS power efficiency. The 'SJ' suffix typically denotes a specific tape-and-reel or tube packaging variant within the SOP-14 form factor, intended for automated surface-mount assembly processes.

Flip Flops Replacement Considerations

Public confirmed substitute part numbers: MM74HC74SJ, MM74HCT74MTCX.