High Speed Inter-Chip USB 2.0 Hub and Flash Media Controller
Datasheet
SMSC USB4640/USB4640i
57
Revision 1.0 (06-01-09)
DATASHEET
10.2
Operating Conditions
10.3
DC Electrical Characteristics
PARAMETER
SYMBOL
MIN
MAX
UNITS
COMMENTS
Commercial
USB4640
Operating
Temperature
T
A
0
70
°C
Ambient temperature in still air.
Industrial
USB4640i
Operating
Temperature
T
A
-40
85
°C
Ambient temperature in still air.
3.3 V supply voltage
VDD33
3.0
3.6
V
A 3.3 V regulator with an output
tolerance of 1% must be used if
the output of the internal power
FET’s must support a 5%
tolerance.
3.3 V supply rise time
t
RT
0
400
μ
s
)
Voltage on
USB+ and USB- pins
-0.3
5.5
V
If any 3.3 V supply voltage drops
below 3.0 V, then the MAX
becomes:
(3.3 V supply voltage) + 0.5
≤
5.5
Voltage on any signal
pin
-0.3
VDD33
V
Voltage on XTAL1
-0.3
2.0
V
Voltage on XTAL2
-0.3
2.0
V
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
COMMENTS
I, IPU, IPD Type Input Buffer
Low Input Level
High Input Level
Pull Down
Pull Up
V
ILI
V
IHI
PD
PU
2.0
72
58
0.8
V
V
μ
A
μ
A
TTL Levels
IS Type Input Buffer
Low Input Level
High Input Level
Hysteresis
V
ILI
V
IHI
V
HYSI
2.0
420
0.8
V
V
mV
TTL Levels
