SMSC USB2512Ai ユーザーズマニュアル
Industrial Temperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller
Datasheet
Revision 1.97 (08-11-08)
32
SMSC USB2512Ai
DATASHEET
Chapter 5 DC Parameters
5.1
Maximum Guaranteed Ratings
Note 5.1
Stresses above the specified parameters could cause permanent damage to the device.
This is a stress rating only and functional operation of the device at any condition above
those indicated in the operation sections of this specification is not implied.
This is a stress rating only and functional operation of the device at any condition above
those indicated in the operation sections of this specification is not implied.
Note 5.2
When powering this device from laboratory or system power supplies, it is important that
the Absolute Maximum Ratings not be exceeded or device failure can result. Some power
supplies exhibit voltage spikes on their outputs when the AC power is switched on or off.
In addition, voltage transients on the AC power line may appear on the DC output. When
this possibility exists, it is suggested that a clamp circuit be used.
the Absolute Maximum Ratings not be exceeded or device failure can result. Some power
supplies exhibit voltage spikes on their outputs when the AC power is switched on or off.
In addition, voltage transients on the AC power line may appear on the DC output. When
this possibility exists, it is suggested that a clamp circuit be used.
Figure 5.1 Supply Rise Time Model
PARAMETER
SYMBOL
MIN
MAX
UNITS
COMMENTS
Storage
Temperature
T
STOR
-55
150
°C
Lead
Temperature
325
°C
Soldering < 10 seconds
1.8V supply
voltage
V
DDA18PLL,
V
DD18
2.5
V
3.3V supply
voltage
V
DDA33,
V
DD33PLL,
V
DD33,
V
DD33CR
4.6
V
Voltage on any
I/O pin
-0.5
5.5
V
Voltage on
XTAL1
-0.5
4.0
V
Voltage on
XTAL2
-0.5
3.6
V
t
10%
10%
90%
Voltage
t
RT
t
90%
Time
100%
3.3V
VSS
VDD33