UPD720101 データシートの表示（PDF） - NEC => Renesas Technology
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UPD720101 Datasheet PDF : 36 Pages
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Figure 3-4. Receiver Sensitivity for Transceiver at DP/DM
µPD720101
Level 1
+400 mV
Differential
Point 3
Point 1
Point 5
Point 4
Point 2
Point 6
0V
Differential
Level 2
−400 mV
Differential
0%
Unit Interval
100%
USB
Connector
Nearest
Device
Vbus
D+
D-
Gnd
Figure 3-5. Receiver Measurement Fixtures
Test Supply Voltage
15.8 Ω
15.8 Ω
50 Ω
Coax
50 Ω
Coax
+
To 50 Ω Inputs of a
High Speed Differential
Oscilloscope, or 50 Ω
Outputs of a High Speed
Differential Data Generator
−
143 Ω
143 Ω
Pin capacitance
Parameter
Input capacitance
Output capacitance
I/O capacitance
PCI input pin capacitance
PCI clock input pin capacitance
PCI IDSEL input pin capacitance
Symbol
Condition
Min.
Max.
Unit
CI
VDD = 0 V, TA = 25°C
6
8
pF
CO
fC = 1 MHz
10
12
pF
CIO
Unmeasured pins returned to 0
10
12
pF
V
Cin
8
pF
Cclk
6
8
pF
CIDSEL
8
pF
Data Sheet S16265EJ4V0DS
19
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