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Ultra Fast USB 2.0 Multi-Format Flash Media Controller/USB Hub Combo
SMSC USB2640/USB2641 55 Revision 2.0 (10-03-08)
DATASHEET
9.2 Operating Conditions
9.3 DC Electrical Characteristics
PARAMETER SYMBOL MIN MAX UNITS COMMENTS
Operating
Temperature
T
A
0 70 °C Ambient temperature in still air.
3.3V supply voltage V
DD33,
V
DDA33
3.0 3.6 V A 3.3V regulator with an output
tolerance of 1% must be used if
the output of the internal power
FET’s must support a 5%
tolerance.
3.3V supply rise time t
RT
0400μs(Figure 9.1)
1.8V supply rise time t
RT
0400μs(Figure 9.1)
Voltage on
USB+ and USB- pins
-0.3 5.5 V If any 3.3V supply voltage drops
below 3.0V, then the MAX
becomes:
(3.3V supply voltage) + 0.5 ≤ 5.5
Voltage on any signal
pin
-0.3 V
DD33
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
μA
μA
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
ICLK Input Buffer
Low Input Level
High Input Level
Input Leakage
V
ILCK
V
IHCK
I
IL
1.4
-10
0.5
+10
V
V
μA
V
IN
= 0 to V
DD33