Data Sheet

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5
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
AC Electrical Characteristics
All typical value are for V
CC
=3.3 V at T
A
=25°C unless otherw ise specified.
Symbol
Parameter
Condition
V
CC
(V)
T
A
=- 40°C to +85°C
Unit
Min.
Typ.
Max.
t
ON
Turn-On Time
S, /OE to Output
R
L
=50 Ω, C
L
=5 pF, V
SW
=0.8 V,
Figure 6, Figure 7
2.4
24
40
ns
3.0 to 3.6
13
30
t
OFF
Turn-Off Time
S, /OE to Output
R
L
=50 Ω, C
L
=5 pF, V
SW
=0.8 V,
Figure 6, Figure 7
2.4
15
35
ns
3.0 to 3.6
12
25
t
PD
Propagation Delay
8
C
L
=5 pF, R
L
=50 Ω, Figure 6,
Figure 8
3.3
0.25
ns
t
BBM
Break-Before-Make
R
L
=50 Ω, C
L
=5 pF,
V
SW1
=V
SW2
=0.8 V, Figure 10
2.4
2.0
10
ns
3.0 to 3.6
2.0
6.5
O
IRR
Off Isolation
R
L
=50 Ω, f=240 MHz, Figure 12
3.0 to 3.6
-30
dB
Xtalk
Non-Adjacent Channel
Crosstalk
R
L
=50 Ω, f=240 MHz, Figure 13
3.0 to 3.6
-45
dB
BW
-3db Bandw idth
R
L
=50 Ω, C
L
=0 pF, Figure 11
3.0 to 3.6
720
MHz
R
L
=50 Ω, C
L
=5 pF, Figure 11
550
MHz
Note:
8. Guaranteed by characterization.
USB High-Speed-Related AC Electrical Characteristics
All typical value are for V
CC
=3.3 V at T
A
=25°C unless otherw ise specified.
Symbol
Parameter
Condition
V
CC
(V)
T
A
=- 40ºC to +85ºC
Unit
Min.
Typ.
Max.
t
SK(P)
Skew of Opposite Transitions of
the Same Output
(9)
C
L
=5 pF, R
L
=50 Ω, Figure 9
20
ps
t
J
Total Jitter
(9)
R
L
=50 Ω, C
L
=5 pF,
t
R
=t
F
=500 ps (10-90%) at
480 Mbps (PRBS=2
15
– 1)
200
ps
Note:
9. Guaranteed by characterization.
Capacitance
Symbol
Parameter
Condition
T
A
=- 40°C to +85°C
Unit
Min.
Typ.
Max.
C
IN
Control Pin Input Capacitance
V
CC
=0 V
1.5
pF
C
ON
D+/D- On Capacitance
V
CC
=3.3 V, /OE=0 V, f=240 MHz,
Figure 15
3.7
C
OFF
D1n, D2n Off Capacitance
V
CC
and /OE=3.3 V, Figure 14
2.0