74LVX74SJX

Overview

The Fairchild Semiconductor 74LVX74SJX is a dual D-type flip-flop integrated circuit belonging to the 74LVX logic family. It features positive-edge triggering and includes independent Set and Reset inputs for each element. The device operates within a supply voltage range of 2V to 3.6V, ensuring compatibility with low-voltage digital systems. It utilizes a 14-SOIC package with a width of 5.30mm, designed for surface-mount applications. The component supports a maximum clock frequency of 85 MHz and exhibits a propagation delay of 13.2ns at 3.3V with a 50pF load. Quiescent current is specified at 2 µA, while output drive capability reaches 4mA in both high and low states.

Feature Summary

• Dual D-type flip-flops with positive-edge clock triggering
• Independent Set and Reset control inputs
• Complementary output configuration
• Low quiescent current consumption

Applications

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

Procurement Notes

Verify the exact manufacturer designation as the part number may be associated with onsemi following corporate acquisitions. Confirm the suffix SJX corresponds to the specific tape-and-reel packaging variant. Ensure compliance with RoHS directives if required by the target application environment. Cross-reference datasheet revisions to confirm pinout consistency with existing designs.

Selection Notes

Select this component when dual edge-triggered storage is required within a 2V to 3.6V operating window. The LVX series offers speed comparable to LVC but with lower voltage operation. Verify that the 14-SOIC footprint matches the PCB layout constraints. Consider the complementary outputs if inverted signals are needed without additional gates.

Part Context

This device is part of the 74LVX family, which bridges the performance gap between standard CMOS and low-voltage CMOS technologies. It provides high-speed operation suitable for modern portable electronics and battery-powered devices. The 74LVX74 specifically addresses the need for compact, low-power sequential logic solutions in space-constrained designs.

Replacement Considerations

Check for equivalents such as MC74LVX74MG from onsemi or NXP variants like SN74LVX74D. Ensure functional compatibility regarding voltage ranges and package dimensions before substitution.