ISL54228 INTERSIL [Intersil Corporation], ISL54228 Datasheet - Page 8

• Manufacturer Part Number: ISL54228
• Description: High-Speed USB 2.0 (480Mbps) DPST Switch with Overvoltage Protection (OVP)
• Manufacturer: INTERSIL [Intersil Corporation]

Test Circuits and Waveforms
OUT+
DIN+
DIN-
OUT-
FIGURE 5A. MEASUREMENT POINTS
90%
10%
90%
10%
t
t
t
fi
ri
f0
t
50%
50%
ro
50%
8
50%
90%
10%
t
10%
90%
skew_i
t
skew_o
FIGURE 5. SKEW TEST
ISL54228
ISL54228
(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.
|tskew_i| Change in Skew through the Switch for Input Signals.
DIN+
DIN-
V
DD
15.8Ω
15.8Ω
143Ω
143Ω
FIGURE 5B. TEST CIRCUIT
COM-
COM+
OE
V
GND
DD
C
D+
D-
C
C
L
L
July 29, 2010
FN7628.0
OUT+
45Ω
OUT-
45Ω