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Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
Revision 1.1 (05-29-08) 28 SMSC USB2250/50i/51/51i
DATASHEET
Chapter 7 DC Parameters
7.1 Maximum Guaranteed Ratings
Note 7.1 Stresses above the specified parameters may 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.
Note 7.2 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.
PARAMETER SYMBOL MIN MAX UNITS COMMENTS
Storage
Temperature
T
A
-55 150 °C
Lead
Temperature
325 °C Soldering < 10 seconds
3.3V supply
voltage
V
DD33,
V
DDA33
-0.5 4.0 V
Voltage on
USB+ and
USB- pins
-0.5 (3.3V supply voltage + 2) ≤ 6V
Voltage on
GPIO8, 9, 10
& 11
-0.5 V
DD33
+ 0.3 V When internal power FET
operation of these pins are
enabled, these pins may be
simultaneously shorted to
ground or any voltage up to
3.63V indefinitely, without
damage to the device as long
as V
DD33
and V
DDA33
are less
than 3.63V and T
A
is less than
70
o
C.
Voltage on any
signal pin
-0.5 V
DD33
+ 0.3 V
Voltage on
XTAL1
-0.5 4.0 V
Voltage on
XTAL2
-0.5 V
DD18
+ 0.3 V