74VCX16722MTDX

Overview

The Fairchild Semiconductor 74VCX16722MTDX is a low-voltage, 18-bit bus transceiver designed for asynchronous communication between busses operating at different supply voltages. It features dual power supplies: VCCA (2.3V to 3.6V) and VCCB (1.65V to 2.7V), enabling signal translation from lower voltage domains up to 3.3V. The device provides bidirectional data transfer with three-state outputs and supports live insertion and withdrawal. It incorporates patented Quiet Series noise reduction circuitry and offers high static drive capabilities of ±24 mA at 3.0V VCC.

Feature Summary

• Dual-supply architecture enables true signal translation between busses ranging from 1.65V to 3.6V
• Patented Quiet Series technology reduces noise and electromagnetic interference during operation
• Supports live insertion and withdrawal without damaging the device or system
• High static drive current capability ensures robust signal integrity across varying load conditions

Applications

• Asynchronous communication interfaces between busses at different voltage levels
• Low-voltage memory systems requiring signal translation
• Portable electronic devices utilizing mixed voltage logic environments
• Data acquisition systems interfacing low-voltage sensors with higher-voltage processors

Procurement Notes

Verify the specific suffix 'MTDX' against the official Fairchild/ON Semiconductor datasheet to confirm package type and tape-and-reel specifications. Ensure that the required VCCA and VCCB supply rails are within the specified operational ranges before integration. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Cross-reference the part number with the manufacturer's current product lifecycle status to ensure availability.

Selection Notes

Select this component when an 18-bit wide interface is required between two distinct voltage domains. It is suitable for applications needing bidirectional data flow with simultaneous translation capabilities. Consider the dual-supply requirement and ensure power sequencing allows for proper VCCB and VCCA operation. Evaluate the need for live insertion support and EMI reduction features inherent in the Quiet Series design compared to standard transceivers.

Part Context

The 74VCX16722 belongs to the VCX family of low-voltage bus transceivers from Fairchild Semiconductor. This series is characterized by its ability to translate signals between different voltage levels while maintaining high performance and low noise. The device is functionally compatible with standard 16-bit transceiver architectures but extended to 18 bits and optimized for low-voltage operations typical in modern portable and embedded systems.

Replacement Considerations

Check for direct substitutes such as the 74VCX16722MTD or other variants within the 74VCX16xxx family. Verify pin compatibility and electrical characteristics if considering alternative manufacturers like ON Semiconductor. Ensure that any replacement maintains the dual-supply functionality and quiet series noise reduction features.