Data Sheet

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2
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
Pin Assignments
V
cc
GND
1
85
4
3
2
Sel
D+D-
HSD2+HSD2-
HSD1+
/OE
9
10
6 7
HSD1-
5
4
3
2
1
6
7
8
9
10
V
CC
Sel
D+
D-
GND
/OE
HSD1-
HSD2-
HSD1+
HSD2+
Figure 2. 10-Lead UMLP (Top-Through View)
Figure 3. 10-Lead MSOP (Top-Through View)
Pin Definitions
UMLP Pin#
MSOP Pin#
Name
Description
1
3
D+
Common USB Data Bus
2
4
D-
Common USB Data Bus
3
5
GND
Ground
4
6
HSD1-
Multiplexed Source Input 1
5
7
HSD1+
Multiplexed Source Input 1
6
8
HSD2-
Multiplexed Source Input 2
7
9
HSD2+
Multiplexed Source Input 2
8
10
/OE
Sw itch Enable
9
1
V
CC
Supply Voltage
10
2
Sel
Sw itch Select
Truth Table
SEL
/OE
Function
X
HIGH
Disconnect
LOW
LOW
D+= HSD1+, D-= HSD1-
HIGH
LOW
D+= HSD2+, D-= HSD2-
Notes:
1. LOW ≤V
IL
.
2. HIGH ≥V
IH
.
3. X=Don’t Care.