74VCX16821MTDX

Overview

The 74VCX16821MTDX is a low voltage 20-bit D-type flip-flop manufactured by Fairchild Semiconductor. It features 3.6V tolerant inputs and outputs, supporting supply voltages from 1.2V to 3.6V. The device utilizes advanced CMOS technology for high-speed operation with low power dissipation. It includes asynchronous clear functionality and is housed in a TSSOP-56 package suitable for surface mount applications.

Feature Summary

• Provides 20-bit data storage with D-type flip-flop architecture
• Supports 3.6V tolerant I/O interfaces for mixed-voltage systems
• Operates across a wide supply voltage range of 1.2V to 3.6V
• Features asynchronous clear input for immediate state reset

Applications

• Low voltage digital data storage circuits
• Mixed-voltage interface buffering between 1.8V and 3.3V domains
• High-density memory address latching
• Portable electronic devices requiring low power consumption

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead time availability as production status may vary. Request official datasheets and test reports to ensure electrical parameters match design requirements before integration into final products.

Selection Notes

Select this component when designing systems requiring 20-bit parallel data retention with 3.6V tolerance. Ensure the operating voltage remains within the 1.2V to 3.6V range. Consider the TSSOP-56 package dimensions for PCB layout constraints. Verify timing requirements against system clock speeds to ensure adequate setup and hold times are met.

Part Context

This part belongs to the VCX logic family, characterized by low voltage operation and 3.6V tolerance. It complements other VCX series buffers and drivers. The MTDX suffix indicates tape and reel packaging for automated assembly processes. It serves as a specialized solution for dense digital logic applications in portable electronics.

Replacement Considerations

Check for direct pin-to-pin replacements within the same VCX family. Verify that substitute parts maintain identical 3.6V tolerance and 20-bit capacity. Ensure timing characteristics and package dimensions match the original design specifications to avoid board rework.