USB 2.0 Hi-Speed 3-Port Hub Controller
Datasheet
9.2
Operating Conditions**
+3.3 V Supply Voltage (
VDD33, VDDA33
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3.0 V to 3.6 V
Power Supply Rise Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ambient Operating Temperature in Still Air (T
A
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 9.4
The power supply rise time requirements vary dependent on the usage of the external
reset (RESET_N). If RESET_N is asserted at power-on, the power supply rise time must
be 10mS or less (t
RT(max)
= 10mS). If RESET_N is not used at power-on (tied high), the
power supply rise time must be 1mS or less (t
RT(max)
= 1mS).
illustrates the
supply rise time requirements.
0
o
C to +70
o
C for commercial version, -40
o
C to +85
o
C for industrial version.
Note 9.5
**Proper operation of the device is guaranteed only within the ranges specified in this section.
Voltage
t
RT
3.3V
100%
VDDA33
90%
10%
VSS
t
10%
t
90%
Time
Figure 9.1 Supply Rise Time Model
SMSC USB2533
53
Revision 1.0 (06-17-13)
DATASHEET
SMSC [ SMSC CORPORATION ]
