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USB MultiSwitch
TM
Hub
Datasheet
SMSC USB2524 53 Revision 1.91 (08-22-07)
DATASHEET
Chapter 11 DC Parameters
11.1 Maximum Guaranteed Ratings
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to +70
o
C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55
o
to +150
o
C
Lead Temperature Range (soldering, 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +325
o
C
Positive Voltage on any I/O pin, with respect to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Negative Voltage on any I/O pin, with respect to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.V
Positive Voltage on XTAL1, with respect to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0V
Positive Voltage on XTAL2, with respect to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.6V
Negative Voltage on XTAL1 and XTAL2, with respect to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.V
Maximum V
DDA33
&V
DD33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4.0V
*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 other condition above those indicated
in the operation sections of this specification is not implied.
Note: 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.
11.1.1 DC Electrical Characteristics
(T
A
= 0°C - 70°C, V
DD33
, V
DDA33
, = +3.3 V tolerance -5% to ±10%)
Table 11.1 DC Electrical Characteristics
PARAMETER SYMBOL MIN TYP MAX UNITS COMMENTS
I, IS Type Input Buffer
Low Input Level
High Input Level
Input Leakage
Hysteresis (‘IS’ Only)
V
ILI
V
IHI
I
IL
V
HYSI
2.0
-10
250 300
0.8
+10
350
V
V
uA
mV
TTL Levels
V
IN
= 0 to V
DD33
Input Buffer with Pull-Up
(IPU)
Low Input Level
High Input Level
Low Input Leakage
High Input Leakage
V
ILI
V
IHI
I
ILL
I
IHL
2.0
0.8
10
30
V
V
uA
uA
TTL Levels
V
IN
= 0
V
IN
= V
DD33