Data Sheet

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB31 — Low-Power, Single-Port, High-Speed USB 2.0 (480Mbps) Switch
FSUSB31 Rev. 1.1.0 9
Test Diagrams (Continued)
Figure 17. Channel Off Isolation
Figure 18. Non-Adjacent Channel-to-Channel Crosstalk
Figure 19. Channel On Capacitance Figure 20. Channel Off Capacitance
R
T
R
S
V
IN
FSUSB31
GND
Network Analyzer
V
OUT
GND
V
S
GND
GND
OFF-Isolation = 20 Log (V
OUT
/ V
IN
)
R
T
GND
GND
V
OE
R
T
R
S
V
IN
FSUSB31
GND
Network Analyzer
V
OUT
GND
NC
V
S
GND
GND
R
S
and R
T
are functions of the application environment
(50, 75 or 100Ω).
Crosstalk = 20 Log (V
OUT
/ V
IN
)
R
T
GND
GND
V
OE
FSUSB31
Dn
Capacitance
Meter
F = 240MHz
HSDn
FSUSB31
Dn
Capacitance
Meter
F = 240MHz
V
OE
= 0 or V
CC
HSDn
OE
V
OE
= 0 or V
CC
OE