74LCX821MTCX

Overview

The Fairchild Semiconductor 74LCX821MTCX is a low voltage 10-bit D-type flip-flop featuring 3-state outputs. Designed for 2.5V or 3.3V VCC applications, it interfaces with 5V signal environments through 5V tolerant inputs and outputs. Fabricated using advanced CMOS technology, the device ensures high-speed operation while maintaining low power dissipation. It includes features such as power-down high impedance states, live insertion support, and patented noise reduction circuitry.

Feature Summary

• Features 5V tolerant inputs and outputs for direct interfacing with 5V signal environments
• Supports live insertion and withdrawal capabilities within bus organized systems
• Implements patented noise and EMI reduction circuitry to enhance signal integrity

Applications

• Bus organized system applications requiring 10-bit data storage
• Low voltage digital logic circuits operating at 2.5V or 3.3V
• Systems requiring interface between low voltage logic and 5V signal environments

Procurement Notes

Verify that the ordering suffix matches the required package type, as variations exist for tape and reel versus bulk packaging. Confirm that the component meets current RoHS compliance standards, noting potential nomenclature changes from Fairchild to ON Semiconductor where underscores are replaced by dashes in updated part numbers. Ensure the specific revision level aligns with design requirements.

Selection Notes

Select this component when a 10-bit parallel storage solution with tri-state outputs is required for low voltage designs. The 5V tolerance feature makes it suitable for mixed-voltage systems without additional level shifting. Consider the propagation delay specifications if timing constraints are critical, and verify that the package dimensions fit the available PCB space.

Part Context

This device belongs to the 74LCX series of low voltage CMOS logic components. It serves as a registered transceiver variant, providing storage capability alongside bus driving functions. The series is characterized by its compatibility with standard 5V logic levels despite operating at lower supply voltages, facilitating integration into existing digital infrastructure.

Replacement Considerations

The 74LCX821MSA and 74LCX821MTC are documented equivalents within the same family. Verify package compatibility and electrical parameter alignment before substitution. Note that Fairchild parts may require nomenclature updates to ON Semiconductor standards.