Datasheet

DP1
DM1
DP2
DM2
DP3
DM3
PWRON1
OVRCUR1
PWRON2
OVRCUR2
PWRON3
OVRCUR3
DP0
DM0
V
CC
XTAL1
XTAL2
OCSOFF
SN75240
D +
D −
5 V
GND
D +
D −
5 V
D +
D −
5 V
48-MHz
Crystal
Downstream
Ports
TUSB2040
Hub Controller
Tuning
Circuit
A
B
C
D
47 µF
†
1/2 SN75240
A
B
C
D
GND
GND
47 µF
†
47 µF
†
D +
D −
Upstream
Port
TPS2041B
1/2 SN75240
A
B
5 V
GND
C
D
1 µF
IN
GND
Ferrite Beads
Ferrite Beads
Ferrite Beads
BUSPWR
GANGED
Tie to TPS2041B EN
Input
OC EN
OUT
5-V Power
Supply
IN
GND
3.3 V
4.7 µF
0.1 µF
4.7 µF
EN1
IN1
OC1
OUT1
TPS2053B
EN2
OC2
OUT2
0.1 µF
0.1 µF
GND
†
USB rev 1.1 requires 120 µF per hub.
OUT3
EN3
OC3
IN2
GND
GND
TPS76333
TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com SLVS514L –JUNE 2010– REVISED JUNE 2011
Figure 38. Hybrid Self / Bus-Powered Hub Implementation, TPS2043B/TPS2053B
Copyright © 2010–2011, Texas Instruments Incorporated 25