Data Sheet

© 2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB22 • Rev. 1.0.3 5
FSUSB22 — Low-Power, 2-Port, High-Speed USB 2.0 (480Mbps) Switch
AC Electrical Characteristics
Typical values are at V
CC
= 3.0V and T
A
= 25°C.
Symbol Parameter Conditions V
CC
(V) Min. Typ. Max. Units Figure
t
ON
Turn-on Time
S-to-Bus B
3.0 to 3.6 4.5 6.0 ns
Figure 9
Figure 10
t
OFF
Turn-off Time
S-to-Bus B
3.0 to 3.6 2.5 4.0 ns
Figure 9
Figure 10
t
PD
Propagation Delay C
L
= 10pF 3.0 to 3.6 0.25 ns Figure 14
O
IRR
Non-Adjacent Off
Isolation
f = 250MHz,
R
L
= 50Ω
3.0 to 3.6 -30 dB Figure 11
X
TALK
Non-Adjacent
Channel Crosstalk
f = 250MHz,
R
L
= 50Ω
3.0 to 3.6 -38 dB Figure 12
BW -3dB Bandwidth
R
L
= 50Ω
3.0 to 3.6 750 MHz Figure 13
USB Related AC Electrical Characteristics
Typical values are at V
CC
= 3.0V and T
A
= 25°C.
Symbol Parameter Conditions V
CC
(V) Min. Typ. Max. Units Figure
t
SK(O)
Channel-to Channels
Skew
C
L
= 10pF 3.0 to 3.6 0.051 pF
Figure 14
Figure 16
t
SK(P)
Skew of Opposite
Transition of the
Same Output
C
L
= 10pF 3.0 to 3.6 0.020 pF
Figure 14
Figure 16
T
J
Total Jitter
R
L
= 50Ω,
C
L
= 10pF
t
R
= t
F
= 750ps
at 480MPs
3.0 to 3.6 0.210
Capacitance
Typical values are at V
CC
= 3.0V and T
A
= 25°C.
Symbol Parameter Conditions Typ. Unists
C
IN
Control Pin Input Capacitance V
CC
= 0V 2.5 pF
C
ON
A/B On Capacitance V
CC
= 3.3V, /OE = 0V 12 pF
C
OFF
Port B Off Capacitance V
CC
and /OE = 3.3V 4.5 pF