SMSC USB2250 User Manual

Ultra Fast USB 2.0 Multi-Slot Flash Media Controller

Revision 1.1 (05-29-08)

28

SMSC USB2250/50i/51/51i

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. 

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.

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) 

≤ 6

V

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