Integrated USB 2.0 Compatible 4-Port Hub
Datasheet
Chapter 8 DC Parameters
8.1 Maximum Guaranteed Ratings
PARAMETER SYMBOL MIN
Storage
TA
-55
Temperature
Lead
Temperature
1.8V supply
voltage
VDDA18PLL
VDD18
-0.5
3.3V supply
voltage
VDDA33
VDDA33PLL
VDD33
-0.5
Voltage on any
-0.5
I/O pin
Voltage on
-0.5
XTAL1
Voltage on
-0.5
XTAL2
MAX
150
325
2.5
4.0
UNITS
°C
COMMENTS
°C
Soldering < 10 seconds
V
V
(3.3V supply voltage + 2) ≤ 6
V
4.0
V
VDD18 + 0.3V
V
Note:
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. 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.
SMSC USB2504/USB2504A
41
DATASHEET
Revision 2.3 (08-27-07)