Datasheet

USB 2.0 Hi-Speed Hub Controller
Datasheet
SMSC USB251x 67 Revision 1.1 (04-26-10)
DATASHEET
Note 9.5 Capacitance T
A
= 25°C; fc = 1 MHz; VDD33 = 3.3 V
Table 9.9 USB251xB/xBi Supply Current Reset (I
CRST
)
PART MIN TYP MAX UNITS COMMENTS
USB2512B 550 1100 μA All supplies combined
USB2512Bi 550 1250
USB2513B 650 1200
USB2513Bi 650 1400
USB2514B 750 1400
USB2514Bi 750 1600
Table 9.10 Pin Capacitance for USB251x, USB251xi, USB251xA, USB251xAi
LIMITS
PARAMETER SYMBOL MIN TYP MAX UNIT TEST CONDITION
Clock Input
Capacitance
C
XTAL
2 pF All pins except USB pins and the pins
under the test tied to AC ground.
Input Capacitance C
IN
10 pF (See Note 9.5)
Output Capacitance C
OUT
20 pF
Table 9.11 Pin Capacitance for USB251xB and USB251xBi
LIMITS
PARAMETER SYMBOL MIN TYP MAX UNIT TEST CONDITION
Clock Input
Capacitance
C
XTAL
6 pF All pins except USB pins and the pins
under the test tied to AC ground.
Input Capacitance C
IN
6 pF (See Note 9.5)
Output Capacitance C
OUT
6pF