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FSUSB22QSCX Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part # FSUSB22QSCX
Description  Low-Power, 2-Port, High-Speed USB 2.0 (480Mbps) Switch
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FSUSB22QSCX Datasheet(HTML) 2 Page - Fairchild Semiconductor

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© 2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSUSB22 • Rev. 1.0.3
2
Logic Diagram
Analog Symbol
USB
Port
USB
Port
D-
D+
D+
D-
Docking Station
USB 2.0
Host
Controller
FSUSB22
USB
Port
USB
Port
D+
D-
D+
D-
D+
D-
D+
D-
Notebook Computer
Docking Connector
1B1
1B2
1A
2B1
2B2
2A
GND
3A
3B2
3B1
4A
4B2
4B1
/OE
S
VCC
1
16
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Figure 1. Logic Diagram
Figure 2.
Analog Symbol
S
1B1
1B2
1A
2B1
2B2
2A
GND
VCC
/OE
4B1
4B2
4A
3B1
3B2
3A
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
1B
1
1B
2
1A
2B
1
2B
2
2A
GND
3A
3B
2
3B
1
4A
4B
2
4B
1
/OE
S
V
CC
116
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Figure 3. QSOP and TSSOP Pin Configuration
Figure 4. Pad Assignment for DQFN
Pin Descriptions
Pin #
Pin Names
Description
1
S
Select Input
2,3,5,6,10,11,13,14
1B1,1B2, 2B1,2B2,3B2,3B1,4B2,4B1
Bus B
8
GND
Ground
4,7,9,12
1A,2A,3A,4A
Bus A
15
/OE
Bus Switch Enable
16
VCC
Supply Voltage
Truth Table
S
OE
Function
Don’t Care
HIGH
Disconnect
LOW
LOW
A=B1
HIGH
LOW
A=B2


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