2-Port USB 2.0 Hub Controller
Datasheet
Table 7.1 DC Electrical Characteristics (continued)
PARAMETER
Supply Current
Suspend
Supply Current
Reset
SYMBOL
ICSBY
MIN TYP MAX UNITS
COMMENTS
320 425
uA Total from all supplies.
IRST
160 300
uA Total from all supplies.
Notes:
1. Output leakage is measured with the current pins in high impedance.
2. See USB 2.0 Specification for USB DC electrical characteristics.
3. RBIAS is a 3.3V tolerant analog pin.
CAPACITANCE TA = 25°C; fc = 1MHz; VDD33CR = 3.3V
LIMITS
PARAMETER
Clock Input
Capacitance
Input Capacitance
Output Capacitance
SYMBOL MIN TYP MAX UNIT
TEST CONDITION
CIN
CIN
COUT
12 pF All pins except USB pins (and pins under
test tied to AC ground)
8
pF
12 pF
Power Sequencing
There are no power supply sequence restrictions for the Hub. The order in which power supplies
power-up and power-down is implementation dependent.
SMSC USB2502
41
DATASHEET
Revision 2.3 (08-27-07)