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CH334U
USB HUB controller, QSOP-28
Schematic Symbol
Pin Configuration (28 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | GND | power_in |
| 2 | XO | passive |
| 3 | XI | passive |
| 4 | DM4- | bidirectional |
| 5 | DP4+ | bidirectional |
| 6 | DM3- | bidirectional |
| 7 | DP3+ | bidirectional |
| 8 | DM2- | bidirectional |
| 9 | DP2+ | bidirectional |
| 10 | DM1- | bidirectional |
| 11 | DP1+ | bidirectional |
| 14 | LED3/SCL | bidirectional |
| 15 | DMU- | bidirectional |
| 16 | DPU+ | bidirectional |
| 19 | PSELF | input |
| 20 | V5 | power_in |
| 22 | LED4/SDA | bidirectional |
| 23 | LED1 | output |
| 24 | LED2 | output |
| 12 | GND | passive |
| 13 | VDD33 | power_in |
| 17 | ~{RESET}/CDP | input |
| 18 | NC | no_connect |
| 21 | VDD33_{LDO} | power_out |
| 25 | ~{PWREN} | output |
| 26 | ~{OVCUR} | input |
| 27 | NC | no_connect |
| 28 | GND | passive |
Footprint
ConfirmedPackage_SO/QSOP-28_3.9x9.9mm_P0.635mm
Pad Layout
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28
Pads (28)
| Number | Type |
|---|---|
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |
| 21 | smd |
| 22 | smd |
| 23 | smd |
| 24 | smd |
| 25 | smd |
| 26 | smd |
| 27 | smd |
| 28 | smd |