Datasheet

8.0 Device Characteristics (Continued)
53
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USBN9603/USBN9604
8.3 AC ELECTRICAL CHARACTERISTICS
(3.0V< V
CC
< 5.5V, 0˚C < TA< +70˚C, unless otherwise specified)
V
IL
Input Low Voltage
0.8 V
I
IL
Input Low Current
V
IN
= GND -10 µA
I
IH
Input High Current
V
IN
=V
CC
10 µA
I
OZ
Tri-state Leakage
V
OUT
=V
CC
or GND -10 10 µA
Oscillator Input/Output Signals (XTALIN, XTALOUT)
V
IH
Input High Switching Level
4, 5
1.8 V
V
IL
Input Low Switching Level
4, 5
1.0 V
C
XIN
Input Capacitance
6
4.0 pF
C
XOUT
Output Capacitance
4.0 pF
Voltage Regulator (3.3V)
V
O
Output Voltage
7
3.0 3.6 V
1. If the internal voltage regulator is enabled, the minimum voltage is 4.25V instead of 3.0V.
2. CLKOUT is not driven and the device is not accessed.
3. The internal votlage regulator is disabled.
4. These voltage levels apply only when an external clock is connected to XTALIN.
5. Much lower voltage levels are expected when the internal oscillator is used.
6. Not tested. Guaranteed by design.
7. The internal voltage regulator is intended to power only the internal transceivers and one external pull-up.
An external de-coupling capacitor is connected to this pin.
Symbol Parameter
Conditions
12
1. Testing is centered around 50 Ω, not 45 Ω +/-15% as specified in USB spec. rev 1.1.
2. Waveforms are measured from 10% to 90%.
Min Typ Max Units
Full Speed Signaling (D+, D-)
T
R
Rise Time
C
L
= 50pF 4 20 nS
T
F
Fall Time
C
L
= 50pF 4 20 nS
T
RFM
Rise / Fall Time Matching (T
R
/T
F
)C
L
= 50pF 90 110 %
V
CRS
Output Signal Crossover Voltage
C
L
= 50pF 1.3 2.0 V
Z
DRV
Driver Output Impedance (Single Ended)
C
L
= 50pF 35 Ω
Clock Out Characteristics (CLKOUT)
T
R
Output Rise Time
C
L
= 50pF 10 nS
T
F
Output Fall Time
C
L
= 50pF 10 nS
T
CYCLE
Output Duty Cycle
Fout<48MHz 45 55 %
Symbol Parameter Conditions Min Typ Max Units
Obsolete