ISL54227 Intersil, ISL54227 Datasheet - Page 8

• Manufacturer Part Number: ISL54227
• Description: High-Speed USB 2.0 (480Mbps) DPST Switch
• Manufacturer: Intersil

Test Circuits and Waveforms
Application Block Diagram
OUT+
DIN+
DIN-
OUT-
FIGURE 5A. MEASUREMENT POINTS
D-
D+
GND
V
90%
10%
90%
10%
BUS
t
t
t
fi
ri
f0
t
50%
50%
ro
50%
COM+
COM-
8
50%
90%
10%
ISL54227
t
10%
90%
skew_i
t
OVP
DET
skew_o
>1MΩ
VDD
3.3V
3.6V
500Ω
GND
CONTROL
LOGIC
FIGURE 5. SKEW TEST
4MΩ
ISL54227
(Continued)
ALM
INT
4MΩ
D+
OE
LP
D-
|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
PORTABLE MEDIA DEVICE
COM-
COM+
OE
µCONTROLLER
TRANSCEIVER
HIGH-SPEED
FULL-SPEED
V
GND
DD
USB
OR
C
www.DataSheet4U.com
D+
D-
C
C
L
L
July 2, 2010
FN7593.0
OUT+
OUT-
45Ω
45Ω