ISL54225IRTZEVAL1Z INTERSIL [Intersil Corporation], ISL54225IRTZEVAL1Z Datasheet - Page 8

• Manufacturer Part Number: ISL54225IRTZEVAL1Z
• Description: High-Speed USB 2.0 (480Mbps) Multiplexer with Overvoltage Protection (OVP)
• Manufacturer: INTERSIL [Intersil Corporation]

Test Circuits and Waveforms
Repeat test for all switches.
IMPEDANCE
ANALYZER
FIGURE 4. CAPACITANCE TEST CIRCUIT
DIN+
DIN-
OUT+
OUT-
FIGURE 6A. MEASUREMENT POINTS
90%
10%
90%
10%
t
t
t
fi
ri
f0
t
50%
50%
ro
HSDxx
Dx
50%
8
50%
90%
10%
t
10%
90%
skew_i
t
skew_o
GND
VDD
OE
SEL
C
0V OR
VDD
FIGURE 6. SKEW TEST
ISL54225
(Continued)
|tro - tri| Delay Due to Switch for Rising Input and Rising Output Signals.
|tfo - tfi| Delay Due to Switch for Falling Input and Falling Output Signals.
|tskew_0| Change in Skew through the Switch for Output Signals.
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
|tskew_i| Change in Skew through the Switch for Input Signals.
SIGNAL
GENERATOR
DIN+
ANALYZER
DIN-
VIN
FIGURE 5. CROSSTALK TEST CIRCUIT
15.8Ω
15.8Ω
143Ω
143Ω
R
VIN
FIGURE 6B. TEST CIRCUIT
L
SEL
COMD2
COMD1
HSD1x
SEL
Dx
VDD
GND
C
GND
OE
VDD
HSD2x
D2
D1
Dx
OE
C
C
C
L
L
July 2, 2010
50Ω
FN7627.0
OUT+
OUT-
45Ω
45Ω
NC