Datasheet

High-Speed Inter-Chip (HSIC) USB 2.0 Hub and Flash Media Controller
Datasheet
Revision 1.3 (03-13-13) 52 SMSC USB4640/USB4640i
DATASHEET
6.2 Operating Conditions
Figure 6.1 Supply Rise Time Model
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.
1.2 V supply voltage VDD12 1.1 1.3 V The ripple on VDD12 must be
less than 50 mV peak to peak.
1.2 V supply rise time t
RT12
0400μs Under all conditions the voltage
on the 1.2 V supply must be
below the 3.3 V supply.
(Figure 6.1)
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
RT33
0400μs(Figure 6.1)
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
t
10%
10%
90%
Voltage
t
RTxx
t
90%
Time
100%
3.3 V
VSS
VDD33
90%
100%
1.2 V
VDD12