To learn more about ON Semiconductor, please visit our website at
www.onsemi.com
Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
product management systems do not have the ability to manage part nomenclature that utilizes an underscore
(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please
email any questions regarding the system integration to Fairchild_questions@onsemi.com.
Is Now Part of
ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right
to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON
Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON
Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA
Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended
or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out
of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor
is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
April 2012
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
FSUSB73
3:1 High-Speed USB Multiplexer and Hub Routing Switch
Features
Switch Type 3:1 MUX + Isolation Switch
USB USB 2.0 High-Speed &
Full-Speed Compliant
RON 6.5Ω
CON 6pF
ESD (IEC61000-4-2) 15kV (Air), 8kV (Contact)
VCC 2.5 to 4.4V
ICCSLP <1µA
ICCACT 9µA
Package 16- Lead UMLP 1.8 x 2.6 x
0.55mm, 0.40mm Pitch
Ordering Information FSUSB73UMX (UMLP)
Applications
MP3 Portable Media Players
Cellular Phones, Smartphones
Netbook, Mobile Internet Device (MID)
Enables USB Hub Switching
Description
The FSUSB73 is a bi-directional, low-power, high-speed
USB 2.0 3:1 MUX plus one isolation switch. It is optimized
for switching three high-speed (480Mbps) or full / low-speed
USB / UART sources to one USB 2.0 connector. In addition,
the FSUSB73 has an integrated routing USB switch to allow
communication between a USB hub and another processor
without re-enumeration.
Related Resources
For samples and questions, please contact:
Analog.Switch@fairchildsemi.com.
FSUSB73 Demonstration Board
FSUSB73 Evaluation Board
Typical Application
Figure 1. Mobile Phone Example
Application
µProcessor
3G
µProcessor
USB Port
FSUSB73
HS-USB 0
HS-USB 1
HS-USB 2
HS-USB 2S
D+
D-
USB HUB
4G
µProcessor
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 2
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
Pin Configuration
Figure 2. Pin Assignments (Top View) Figure 3.
A
nalog Symbol
Pin Descriptions
Pin # Name Type Description
1 GND Ground Ground
2 D+ I/O D+ Common Port (HS or FS USB)
3 D- I/O D- Common Port (HS or FS USB)
4 VCC Power Supply Supply Voltage
5 SEL1 Input Path Selection Control Input (see Truth T ables)
6 SEL0 Input Path Selection Control Input (see Truth T ables)
7 HSD2S- I/O HSD2- from Isolation Switch (HS or FS USB)
8 HSD2S+ I/O HSD2+ from Isolation Switch (HS or FS USB)
9 HSD2- I/O D- from Third Source Path (HS or FS USB)
10 HSD2+ I/O D+ from Third Source Path (HS or FS USB)
11 HSD1+ I/O D+ from Second Source Path (HS or FS USB)
12 HSD1- I/O D- from Second Source Path (HS or FS USB)
13 HSD0+ I/O D+ from First Source Path (HS or FS USB)
14 HSD0- I/O D- from First Source Path (HS or FS USB)
15 /OE Input Enable Control Input (see Truth Tables)
16 SELS Input Path Selection Control Input (see Truth Tabl e)
1
5 6 7 8
9
10
11
2
3
12
16 15 14 13
4
SELS
SEL1
GND
SEL0
D+
D-
VCC
HSD2S- HSD2S+
HSD2-
HSD2+
HSD1-
HSD1+
HSD0- HSD0+/OE
HSD0+
HSD1+
HSD2S+
D+
SEL0
SEL1
HSD2+
/OE
HSD0–
HSD1–
HSD2S–
D–
HSD2–
SELS
Control
Ctrl
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 3
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
Truth Tables
Table 1. 3:1 USB Swi tch Contr ol
/OE SEL1 SEL0 Function
1 X X All Switch Paths Open
0 0 1 D+ = HSD0+, D- = HSD0-
0 1 0 D+ = HSD1+, D- = HSD1-
0 1 1 D+ = HSD2+, D- = HSD2-
0 0 0 All Switch Paths Open
Table 2. Isolation Switch Control
SELS Function
0 HSD2S+ = Open, HSD2S- = Open
1 HSD2S+ = HSD2+, HSD2S- = HS2S-
Functionality
Figure 4. Typical USB Application 1 Figure 5. Typical USB Application 2
Figure 6. Typical USB Application 3 Figure 7. Loopback USB Application
Proc 1
Proc 2
Proc 3
HOST
SEL0=1
SEL1=0
SELS=0
HSD0
HSD1
HSD2S
HSD2
Proc. 1
Proc. 2
Proc. 3
HOST
SEL0=0
SEL1=1
SELS=0
HSD0
HSD1
HSD2S
HSD2
Proc. 1
Proc. 2
Proc 3
HOST
SEL0=1
SEL1=1
SELS=0
HSD0
HSD1
HSD2S
HSD2
Proc. 1
Proc. 2
Proc. 3
HOST
SEL0=0
SEL1=1
SELS=1
HSD0
HSD1
HSD2S
HSD2
HUB
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 4
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable
above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition,
extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute
maximum ratings are stress ratings only.
Symbol Parameter Min. Max. Unit
VCC Supply Voltage -0.50 5.25 V
VCNTRL DC Input Voltage (SEL1, SEL0, /OE, SELS)(1) -0.5 VCC V
VSW DC Switch I/O Voltage(1) -0.50 5.25 V
IIK DC Input Diode Current -50 mA
TSTG Storage Temperature -65 +150 °C
MSL Moisture Sensitivity Level (JEDEC J-STD-020A) 1 Level
ESD
IEC61000-4-2 System on USB Connector Pins D+ & D-
Air Gap 15
kV
Contact 8
Human Body Model, JEDEC: JESD22-A114
D+, D- to GND 6
Power to GND 12
All Other Pins 2
Note:
1. The input and output negative ratings may be exceeded if the input and output diode current ratings are observed.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating
conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend
exceeding them or designing to Absolute Maximum Ratings.
Symbol Parameter Min. Max. Unit
VCC Supply Voltage 2.5 4.4 V
VCNTRL Control Input Voltage (SEL1, SEL0, /OE, and SELS)(2) 0 VCC V
VSW Switch I/O Voltage -0.5 4.4 V
TA Operating Temperature -40 +85 °C
Note:
2. The control input must be held HIGH or LOW; it must not float.
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 5
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
DC Electrical Characteristics
All typical values are for VCC=3.3V at TA=25°C unless otherwise specified.
Symbol Parameter Conditions VCC (V) TA=- 40ºC to +85ºC Unit
Min. Typ. Max.
RON HS Switch On Resistance(3) V
SW=0.4V, ION=-8mA, Figure 8 3.3 6.5 9.0 
∆RON HS Delta RON(4,3) V
SW=0.4V, ION=-8mA 3.3 0.5

IIN Control Input Leakage
All Combinations of /OE, SELS, SEL1,
SEL0 in Truth Tables (Table 1, Table 2)
(1=VCC, 0=0V)
4.4 -1 1 µA
IOZ Off State Leakage 0Dn, HSD0n, HSD1n, HSD2n,
HSD3n, HSD2Sn 4.4V 4.4 -1 1 µA
IOFF Power-Off Leakage Current
(All I/O Ports) VSW=0V to 4.4V, VCC=0V, Figure 9 0 -1 1 µA
ICCSLP Sleep Mode Supply Current All Disabled Conditions in Truth Tables
(Table 1, Table 2) 4.4 1 µA
ICCACT Active Mode Supply Current All Active Modes in Truth Tables
(Table 1, Table 2) 4.4 9 18 µA
ICCT Increase in ICC Current per
Control Input and VCC
VCNTRL=1.8V 4.4 3.3 4.0 µA
VCNTRL=1.2V 4.4 4.9 6.0 µA
VIK Clamp Diode Voltage IIN=-18mA 2.5 -1.2 V
VIH Control Input Voltage HIGH SEL1, SEL0, /OE, SELS 2.5 to 4.4 1.0 V
VIL Control Input Voltage LOW SEL1, SEL0, /OE, SELS 2.5 to 4.4 0.35 V
Notes:
3. Measured by the voltage drop between HSDn and Dn pins at the indicated current through the switch. On resistance is
determined by the lower of the voltage on the two (HSDn or Dn ports).
4. Guaranteed by characterization.
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 6
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
AC Electrical Characteristics
All typical values are for VCC=3.3V at TA=25°C unless otherwise specified.
Symbol Parameter Conditions VCC (V) TA=- 40ºC to +85ºC Unit
Min. Typ. Max.
tON
Turn-On Time when Switching
from One USB Path (or
Disabled i.e. /OE=1) to
Another USB Path
RL=50Ω, CL=35pF, VSW=0.8V,
Figure 10, Figure 11 2.5 to 4.4 126 400 µs
tOFF Turn-Off Time, Turning Off
Any of the USB Paths
RL=50Ω, CL=35pF, VSW= 0.8V,
Figure 10, Figure 11 2.5 to 4.4 80 ns
tPD Propagation Delay(5) CL=5pF, RL=50Ω, Figure 10,
Figure 12 3.3 0.25 ns
tRF
Slow Turn on/off Switch
Paths(5)
CL=5pF, Dn at 0V or 3.6V, 40.5Ω in
Series with Switch 10% to 90% 3.3 4.5 ns
tBBM Break-Before-Make Time(5) RL=50Ω, CL=35pF, VSW1=VSW2=
0.8V, Figure 14 2.5 to 4.4 126 400 µs
OIRR Off Isolation(5) R
L=50Ω, f=240MHz, Figure 16 2.5 to 4.4 -40 dB
Xtalk Channel-to-Channel
Crosstalk(5) RL=50Ω, f=240MHz, Figure 17 2.5 to 4.4 -40 dB
tSK(P) Pulse Skew(5) V
SW=0.2VdiffPP, Figure 13, CL=5pF 2.5 to 4.4 25 ps
tSK(I) Skew Between Differential
Signals within a Pair(5) VSW=0.2VdiffPP, Figure 13, CL=5pF 2.5 to 4.4 25 ps
Note:
5. Guaranteed by characterization.
Capacitance Characteristics
All typical values are for VCC=3.3V at TA=25°C unless otherwise specified.
Symbol Parameter Conditions VCC (V) TA=- 40ºC to
+85ºC Unit
Typ.
CIN Input Capacitance(6) 0 3.0 pF
CONa D+/D- On Capacitance(6) HSD0 or HSD1 path, f=1MHz,
Figure 19 3.3 7.2 pF
CONb D+/D- On Capacitance(6) HSD2 path, f=1MHz, Figure 19 3.3 7.7 pF
CONc D+/D- On Capacitance(6) HSD2S to HSD2S path, f=1MHz,
Figure 19 3.3 5.4 pF
COFF HSD0n, HSD1n, HSD2Sn,
HSD3n Off Capacitance(6)
If VCC=3.3V, then /OE=3.3V,
f=1MHz, Figure 18 0 or 3.3 2.2 pF
Note:
6. Guaranteed by characterization
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 7
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
Test Diagrams
Figure 8. On Resistance Figure 9. Off Leakage
Figure 10. AC Test Circuit Load Figure 11. Turn-On / Turn-Off Waveforms
Figure 12. Propagation Delay (tRtF
–
500ps) Figure 13. Skew Test Waveforms
tSK(P) = | tPLH- – tPHL- | or | tPLH+ – tPHL+ |
tSK(I) = | tPLH- – tPHL+ | or | tPLH+ – tPHL- |
Select
HSD
n
Dn
V
Sel= 0 orV
cc
ION
VON
R
ON = VON /I
ON
GND
V
SW
GND
SW
Select
V
Sel
= 0 orVcc
NC
A
I
Dn(OFF)
V
SW
GND
VVcc
**Each switch port is tested separately
R
L
,R
S
,andC
L
are functions of the application
environment (see AC Tables for specific values)
C
L
includes test fixture and stray capacitance.
R
L
C
L
HSD
n
Dn
GND
GND
R
S
V
Sel
V
SW
GND
V
OUT
V
OUT
Input
Output
V
OH
V
OL
50%
50%
50%
50%
400mV
t
PHL
t
PLH
0V
t
RISE
= 750p s
GND
0.4V
90% 90%
10%10%
t
FALL
= 750p s
50% 50%
Input – V
D+/D -
Output - V
OUT
50% 50%
V
OH
t
pHL+
–V
D+/D -
Output - V
OUT
V
OL
t
pLH-
t
pLH+
t
pHL-
+
-
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 8
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
Test Diagrams (Continued)
Figure 14. Break-Before- M ake Interval Timing
Figure 15. Bandwidth Figure 16. Channel-Off Isolation
Figure 17. Non-
A
djacent Channel-to-Channel Crosstalk
Figure 18. Channel Off Capacitance Figure 19. Channel On Capacitance
V
cc
0.9*V
out
V
cc
/2
t
BBM
0V
V
OUT
Input - V
Sel
0.9*V
out
t
RISE
=2.5ns
90%
10%
C
L
HSD
n
R
L
Dn
GND
GND
R
S
V
Sel
V
SW1
GND
V
OUT
V
SW2
GND
--
R
L
,R
S
,andC
L
are functions of the application
environment (see AC Tables for specific values)
C
L
includes test fixture and stray capacitance.
V
OUT
GND
GND R
T
GND
GND
V
S
R
S
Network Analyzer
V
Sel
GND
R
S
and R
T
are functions of the application
environment (see AC Tables for specific values).
V
IN
R
S
and R
T
are functions of the application
environment (see AC Tables for specific values).
V
OUT
GND
GND
R
T
GND
GND
V
S
R
S
Network Analyzer
R
T
GND
V
Sel
GND
V
IN
R
T
Off isolation = 20 Log (V
OUT
/ V
IN
)
V
OUT
GND
GND
R
T
GND
GND
V
S
R
S
Network Analyzer
R
T
GND
R
S
and R
T
are functions of the application environment
(see AC Tables for specific values).
V
Sel
GND
NC
V
IN
Crosstalk = 20 Log (V
OUT
/ V
IN
)
V
Sel
= 0 or V
cc
HSD
n
Capacitance
Meter
S
HSD
n
V
Sel
= 0 or V
cc
HSD
n
Capacitance
Meter
S
HSD
n
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 9
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
Physical Dimensions
Figure 20. 16-Pin Ultrathin Mold ed Leadless Package (UMLP)
Order Number Operating
Temperature Range Package Description Packing
Method
FSUSB73UMX -40 to 85°C 16-Terminal Ultrathin Molded Leadless Package (UMLP) Tape & Reel
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without
notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most
recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty
therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
RECOMMENDED
LAND PATTERN
NOTES:
A. PACKAGE DOES NOT FULLY CONFORM TO
JEDEC STANDARD.
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS AND TOLERANCES PER
ASME Y14.5M, 1994.
D. LAND PATTERN RECOMMENDATION IS
BASED ON FSC DESIGN ONLY.
E. DRAWING FILENAME: MKT-UMLP16Arev4.
F. TERMINAL SHAPE MAY VARY ACCORDING
TO PACKAGE SUPPLIER, SEE TERMINAL
SHAPE VARIANTS.
SCALE : 2X
LEAD
OPTION 1
SCALE : 2X
LEAD
OPTION 2
PIN#1 IDENT
PIN#1 IDENT
PACKAGE
EDGE
TOP VIEW
BOTTOM VIEW
0.10 C
0.08 C
2.60
1.80
0.10 C
2X
2X
SIDE VIEW
0.10 C
0.05
0.00
0.10 C A B
0.05 C
0.55 MAX.
0.40
1
5
9
13
16
2.10
2.90
0.40
0.663
0.563
0.225
1
(15X)
(16X)
0.152
0.40
0.60
0.10 0.30
0.50
0.10
TERMINAL SHAPE VARIANTS
0.15
0.25 15X
PIN 1 NON-PIN 1
0.15
0.25
15X
0.30
0.50
0.15
0.25
0.30
0.50
0.15
0.25 15X
15X
Supplier 1
Supplier 2
PIN 1 NON-PIN 1
AB
C
SEATING
PLANE
0.45
0.35
0.55
0.45
0.25
0.15
R0.20
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB73 • Rev. 1.0.2 10
FSUSB73 — High-Speed USB Multiplexer and Hub Routing Switch
www.onsemi.com
1
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
www.onsemi.com
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
19521 E. 32nd Pkwy, Aurora, Colorado 80011 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
© Semiconductor Components Industries, LLC