74ACT74SJ

Flip Flops Overview

The Fairchild Semiconductor 74ACT74SJ is a dual D-type flip-flop housed in a 14-lead Small Outline Package (SOIC). It features positive edge-triggered clocking with separate Set and Reset inputs for each flip-flop. The device operates within a supply voltage range of 4.5V to 5.5V, utilizing CMOS technology with TTL-compatible inputs. Outputs are complementary, capable of sourcing and sinking 24mA. The component supports surface-mount installation and functions reliably across an operating temperature range of -40°C to +85°C.

Flip Flops Feature Summary

• Dual D-type flip-flops with positive edge-triggered clocking
• Complementary outputs providing high drive capability
• TTL-compatible input logic levels

Flip Flops Applications

• Parallel data storage registers
• Shift register configurations
• Timing control circuits

Flip Flops Procurement Notes

Verify the specific suffix 'SJ' against the manufacturer's current ordering guide to confirm package dimensions and lead finish specifications. Confirm RoHS compliance status as manufacturing processes may vary by production lot. Ensure the source document explicitly lists this part number to avoid confusion with similar variants like SC or MTC packages.

Flip Flops Selection Notes

Select this component when a dual D-type flip-flop with complementary outputs is required for bus-oriented applications. The ACT series offers faster switching speeds compared to standard AC logic while maintaining low power consumption. Verify that the 14-SOIC package fits the available PCB footprint and that the 4.5V to 5.5V supply voltage aligns with the system design requirements.

Flip Flops Part Context

This component belongs to the 74ACT family of high-speed CMOS logic devices produced by Fairchild Semiconductor. The 74ACT series is designed to be pin-compatible with earlier 74LS logic families but provides significantly improved speed and lower power dissipation. The 74ACT74 specifically implements dual D-type flip-flops, serving as a fundamental building block for sequential logic circuits in digital systems.

Flip Flops Replacement Considerations

Direct substitutes include MC74ACT74DR2G from onsemi and SN74ACT74DR from Texas Instruments. These alternatives maintain functional compatibility and package form factors suitable for direct replacement in existing designs.