74LCX821MSAX

Overview

The Fairchild Semiconductor 74LCX821MSAX is a low-voltage 10-bit D-type flip-flop featuring 3-state outputs, designed for bus-organized system applications. It operates within a 2.3V to 3.6V supply range and provides 5V tolerant inputs and outputs, enabling direct interfacing with 5V signal environments. Fabricated using advanced CMOS technology, the device achieves high-speed operation with a maximum propagation delay of 7.0 ns at VCC = 3.3V while maintaining low power dissipation. The component supports live insertion and withdrawal, offers ±24 mA output drive capability at 3.0V, and incorporates patented noise and EMI reduction circuitry.

Feature Summary

• Provides 5V tolerant inputs and outputs for seamless interface with 5V signal environments
• Supports live insertion and withdrawal operations without system disruption
• Implements patented noise and EMI reduction circuitry for enhanced signal integrity

Applications

• Bus-organized system data storage
• Low voltage digital logic interfaces
• High-speed data transmission systems

Procurement Notes

Verify that the specific suffix 'MSAX' corresponds to the intended tape-and-reel packaging configuration as defined by the manufacturer's official documentation. Confirm that the device meets the required RoHS compliance standards for your region. Ensure that the operating temperature range aligns with your system's environmental specifications before finalizing procurement orders.

Selection Notes

Select this component when a 10-bit parallel data storage solution with 5V tolerance is required in low-voltage designs. The 7.0 ns propagation delay makes it suitable for high-speed applications. Consider the ±24 mA drive strength for driving moderate loads. Verify compatibility with 2.5V or 3.3V supply rails and ensure the package type matches the PCB layout requirements.

Part Context

This part belongs to the LCX series of low-voltage CMOS logic devices from Fairchild Semiconductor (now ON Semiconductor). The LCX family is characterized by its ability to operate at low voltages while maintaining compatibility with 5V systems through tolerant I/O structures. This specific model represents a 10-bit variant within the broader register and flip-flop product line.

Replacement Considerations

Publicly confirmed substitute part numbers include 74LCX821, 74LCX821MSA, and 74LCX821MTC. These variants share identical functional descriptions and electrical characteristics. Verify that the pinout and package dimensions are compatible with the existing design before substitution.