USB2517 Datasheet, PDF (48/58 Pages) SMSC Corporation – USB 2.0 Hi-Speed Hub Controller

USB2517/USB2517I
8.2 Operating Conditions
Parameter
Symbol
Operating
Temperature
1.8V supply
voltage
3.3V supply
voltage
3.3V supply
rise time
Voltage on any
I/O pin
T_A
V_DDA18PLL
V_DD18
V_DDA33
V_DDA33PLL
V_DD33
V_DD33CR
t_RT
Min
Note 8-2
1.62
3.0
-0.3
Max
Note 8-3
Units
Comments
°C Ambient temperature in still air.
1.98
V
3.6
V
400
s (See Note 8-1and Figure 8-1, "SUPPLY
RISE TIME MODEL")
5.5
V
If any 3.3V supply voltage drops below
3.0V, then the MAX becomes:
Voltage on
XTAL1
Voltage on
XTAL2
(3.3V supply voltage) + 0.5
-0.3
V_DD33
V
-0.3
V_DD18
V
Note 8-1
Note 8-2
Note 8-3
If RESET_N is controlled low during the 3.3V rise time and driven high after VDD33 is stable, the
rise time can be extended to 100 ms.
0°C for commercial temperature version, -40°C for industrial temperature version
70°C for commercial temperature version, +85°C for industrial temperature version
FIGURE 8-1:
SUPPLY RISE TIME MODEL
Voltage
VDD33
t_RT
3.3V
100%
90%
10%
VSS
t_10%
t_90%
Time
DS00001598B-page 48
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