74CB3Q3257PW-Q100J

Overview

The Nexperia 74CB3Q3257PW-Q100J is a quad high-bandwidth single-pole, double-throw FET bus switch housed in a TSSOP16 (SOT403-1) package. It features an internal charge pump to improve ON resistance and enable switching of 5 V signals with a 3.3 V supply. Qualified to AEC-Q100 Grade 3, it operates from -40 °C to +85 °C with a supply voltage range of 2.3 V to 3.6 V.

Feature Summary

• Internal charge pump enhances gate voltage for improved ON resistance and 5 V signal switching capability at 3.3 V supply.
• AEC-Q100 Grade 3 qualification ensures reliability for automotive environments.
• Overvoltage tolerant control inputs allow compatibility with TTL or 5 V/3.3 V CMOS logic levels.
• IOFF circuitry supports partial power-down mode operation to prevent damaging backflow currents.

Applications

• Communication infrastructure
• Bus isolation
• Memory interleaving
• Sensor multiplexing

Procurement Notes

Verify the specific suffix 'J' against the manufacturer's official ordering information to confirm packaging details such as tape and reel specifications. Ensure the component meets the required AEC-Q100 Grade 3 standards for your target application environment. Cross-reference the TSSOP16 package dimensions with your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this device when high bandwidth and low signal distortion are critical for data lines. The integrated charge pump makes it suitable for applications requiring 5 V signal handling on a lower 3.3 V logic rail. Consider the AEC-Q100 Grade 3 rating if the operating environment demands higher automotive reliability standards compared to Grade 1 or 2 components.

Part Context

This component belongs to the 74CB3Q series of automotive-grade FET bus switches. It is designed to replace older discrete switch solutions by integrating four independent channels into a single compact surface-mount package. The series focuses on minimizing loading effects while maintaining high-speed signal integrity in mixed-voltage systems.

Replacement Considerations

Public confirmed substitute part numbers: None listed in source material.