Datasheet

DP1
DM1
DP2
DM2
DP3
DM3
DP4
PWRON1
OVRCUR1
PWRON2
OVRCUR2
DM4
DP0
DM0
V
CC
XTAL1
XTAL2
OCSOFF
SN75240
D +
D -
5 V
GND
D +
D -
5 V
D +
D -
5 V
D +
D -
5 V
48-MHz
Crystal
Downstream
Ports
TUSB2046
Hub Controller
Tuning
Circuit
A
B
C
D
SN75240
A
B
C
D
GND
GND
GND
D +
D -
Upstream
Port
TPS2051B
SN75240
A
B
5 V
GND
C
D
IN
GND
Ferrite Beads
Ferrite Beads
Ferrite Beads
Ferrite Beads
BUSPWR
GANGED
Tie to TPS2051B EN Input
OC EN
OUT
5-V Power
Supply
IN
GND
3.3 V
EN1
IN
OC1
OUT1
TPS2042B
EN2
OC2
OUT2
GND
TPS76333
PWRON3
PWRON4
OVRCUR3
OVRCUR4
EN1
IN
OC1
OUT1
TPS2042B
EN2
OC2
OUT2
33 µF
(see Note A)
4.7 µF
0.1 µF
4.7 µF
0.1 µF
33 µF
(see Note A)
33 µF
(see Note A)
33 µF
(see Note A)
0.1 µF
TPS2041B-Q1
TPS2042B-Q1
TPS2051B-Q1
SLVS782B –NOVEMBER 2007–REVISED OCTOBER 2011 www.ti.com
A. USB rev 1.1 requires 120 μF per hub.
Figure 28. Hybrid Self-Powered/Bus-Powered Hub Implementation (TPS2042B)
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Product Folder Link(s): TPS2041B-Q1 TPS2042B-Q1 TPS2051B-Q1