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HD3SS3220: VBUS_DET resistance ranges

Part Number: HD3SS3220

Section 6.3 Recommended Operating Conditions states that R(VBUS) should be between 880K and 910K Ohms.

Section 6.5 Electrical Characteristics (table on Page 7) states RVBUS should be between 855K and 920K Ohms.

Throughout the entire datasheet, the documentation states that VBUS_DET should be tied to VBUS through a 900K Ohm resistor.

Questions

  1. Which of the R(VBUS) ranges is correct? Conservatively, I will stick with the tighter range listed in Section 6.3
  2. The documentation states nothing about power handling or tolerance for the 900K resistor. 900K is not a standard 1% part. A brief search on Digikey and Mouser reveals a 900K, 0.1%, 1/4W with a 24 week lead time. Is this truly what is required or can we use a 909K, 1%, 0.1W, 0402 resistor which is a smaller package and is more commonly available?
  3. Also in Section 6.5, R(VBUS_DET_INT) is specified as 95K. For VBUS = 5V, I(VBUS_DET) = 5uA. 5uA through a 900K resistor would dissipate 22.7uW. Given my part search for this resistor, I don’t see how a 1/4W resistor is required. Am I missing something here?
  4. What is the V(BUS_THR) used for? And how is it derived? For VBUS = 5V, and a voltage divider formed by 900K and 95K, the voltage at VBUS_DET should be 0.477V. The datasheet does not discuss V(BUS_THR) anywhere except for the table in section 6.5.

I also note that the HD3SS3220 DFP Dongle EVM user manual (http://www.ti.com/lit/ug/sllu237a/sllu237a.pdf) shows 909K (R35) between VBUS_DET and VBUS, but there is no BOM to indicate tolerance, power rating or package size.