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TPD4E001: what's the difference compared to TPD4E1U06?

Howard Zou
Genius 12365 points
Part Number: TPD4E001
Other Parts Discussed in Thread: TPD4E1U06

Both these two devices can be used to protect USB interface.

But TPD4E1U06 has a NC pin, TPD4E001 has a VCC pin and can be connected to VBUS of USB.

So how to choose between these two? I also want to know more general comparison between device with NC and device with VCC.

  • 0
    TI__Expert 3500 points

    Howard-

    Between the TPD4E1U06 and the TPD4E001, either can be used for USB 2.0 protection, however I would recommend the TPD4E1U06. The TPD4E001 has a VCC pin to hide the capacitance and make it lower, but that means that the ESD pulse is shunted to the VCC rail and the clamping is then based on whatever devices are on the rail. If there is no VCC rail, that means that the ESD will be clamped specifically to GND by the diode, leading to generally better clamping performance.

    Does that make sense? Let me know if you have any follow up questions.

    Thanks,

    Alec