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FSUSB42 — Low-Power, Two-Port, High-Speed,
USB2.0 (480Mbps) UART Switch
Features
Description
Low On Capacitance: 3.7 pF Typical
Low On Resistance: 3.9 Ω Typical
Low Power Consumption: 1 μA Maximum
- 15 μA Maximum ICCT over an Expanded Voltage
Range (VIN=1.8 V, VCC=4.4 V)
Wide -3 db Bandwidth: > 720 MHz
Packaged in:
- 10-Lead UMLP (1.4 x 1.8 mm)
- 10-Lead MSOP
8 kV ESD Rating, >16 kV Power / GND ESD Rating
Over-Voltage Tolerance (OVT) on all USB Ports
Up to 5.25 V without External Components
The FSUSB42 is a bi-directional, low-power, two-port,
high-speed, USB2.0 switch. Configured as a doublepole, double-throw switch (DPDT) switch, it is optimized
for switching between any combination of high-speed
(480 Mbps) or Full-Speed (12 Mbps) sources.
The FSUSB42 is compatible with the requirements of
USB2.0 and features an extremely low on capacitance
(CON) of 3.7 pF. The wide bandwidth of this device
(720 MHz) exceeds the bandwidth needed to pass the
third harmonic, resulting in signals with minimum edge
and phase distortion. Superior channel-to-channel
crosstalk also minimizes interference.
The FSUSB42 contains special circuitry on the switch
I/O pins for applications where the VCC supply is
powered-off (VCC=0 V), which allows the device to
withstand an over-voltage condition. This device is
designed to minimize current consumption even when
the control voltage applied to the SEL pin is lower than
the supply voltage (VCC). This feature is especially
valuable to ultra-portable applications, such as cell
phones, allowing for direct interface with the generalpurpose I/Os of the baseband processor. Other
applications include switching and connector sharing in
portable cell phones, PDAs, digital cameras, printers,
and notebook computers.
Applications
Cell phone, PDA, Digital Camera, and Notebook
LCD Monitor, TV, and Set-Top Box
Ordering Information
Part Number
Top Mark
Operating Temperature
Range
FSUSB42UMX
HE
-40 to +85°C
10-Lead, Quad, Ultrathin Molded Leadless Package
(UMLP), 1.4 x 1.8 mm
FSUSB42MUX
FSUSB42
-40 to +85°C
10-Lead, Molded Small-Outline Package (MSOP)
JEDEC MO-187, 3.0 mm Wide
Package
HSD1+
D+
HSD2+
HSD1-
D-
HSD2Sel
Control
/OE
Figure 1. Analog Symbol
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
www.fairchildsemi.com
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
July 2015
GND
3
HSD1-
4
HSD1+
5
D- D+
2
1
VCC
1
10
Sel
2
9
HSD2+
D+
3
8
HSD2-
D-
4
7
HSD1+
GND
5
6
HSD1-
/OE
10 Sel
9
Vcc
8 /OE
6
7
HSD2- 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
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
Switch Enable
9
1
VCC
Supply Voltage
10
2
Sel
Switch Select
Ground
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
Pin Assignments
Truth Table
SEL
/OE
Function
X
HIGH
Disconnect
LOW
LOW
D+= HSD1+, D-= HSD1-
HIGH
LOW
D+= HSD2+, D-= HSD2-
Notes:
1. LOW ≤VIL.
2. HIGH ≥VIH.
3. X=Don’t Care.
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
www.fairchildsemi.com
2
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
VCC
VCNTRL
Parameter
Supply Voltage
DC Input Voltage (S, /OE)
(4)
VSW
DC Switch I/O Voltage
IIK
DC Input Diode Current
(4)
(VCC=0V)
Min.
Max.
Unit
-0.5
5.6
V
-0.5
VCC
V
-0.50
5.25
V
-50
IOUT
DC Output Current
TSTG
Storage Temperature
MSL
Moisture Sensitivity Level (JEDEC J-STD-020A)
-65
All Pins
7
I/O to GND
8
Power to GND
16
D+/D-
9
Air Discharge
15
Contact
8
Human Body Model, JEDEC: JESD22-A114
ESD
IEC 61000-4-2 System on USB Connector
Pins D+ & D-
Charged Device Model, JEDEC: JESD22-C101
mA
100
mA
+150
°C
1
Level
kV
2
Note:
4. 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
VCC
VCNTRL
VSW
TA
Parameter
Min.
Max.
Unit
2.4
4.4
V
0
VCC
V
Switch I/O Voltage
-0.5
4.5
V
Operating Temperature
-40
+85
°C
Supply Voltage
Control Input Voltage (S, /OE)
(5)
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
Absolute Maximum Ratings
Note:
5. The control input must be held HIGH or LOW and it must not float.
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
www.fairchildsemi.com
3
All typical value are at TA=25°C unless otherwise specified.
Symbol
Parameter
Condition
VIK
Clamp Diode Voltage
IIN=-18mA
VIH
Input Voltage High
VIL
Input Voltage Low
IIN
Control Input Leakage
VSW=0 to VCC
IOZ
Off State Leakage
0 Dn, HSD1n, HSD2n
3.6 V
IOFF
Power-Off Leakage Current
(All I/O Ports)
VSW=0 V to 4.3 V, VCC=0 V
Figure 5
RON
HS Switch On Resistance
VCC (V)
TA=- 40°C to +85°C
Min.
Typ.
3.0
Max.
-1.2
2.4 to 3.6
1.3
4.3
1.7
Unit
V
V
2.4 to 3.6
0.5
4.3
0.7
V
0 to 4.3
-1
1
µA
4.3
-2
2
µA
0
-2
2
µA
VSW=0.4 V, ION=-8 mA
Figure 4
2.4
4.5
7.5
3.0
3.9
6.5
HS Delta RON
VSW=0.4 V, ION=-8 mA
3.0
0.65
ICC
Quiescent Supply Current
VCNTRL=0 or VCC, IOUT=0
4.3
1
µA
Increase in ICC Current per
Control Voltage and VCC
VCNTRL=2.6 V, VCC=4.3 V
4.3
10
µA
ICCT
VCNTRL=1.8 V, VCC=4.3 V
4.3
15
µA
∆RON
(6)
(7)
Notes:
6. 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).
7. Guaranteed by characterization.
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
DC Electrical Characteristics
www.fairchildsemi.com
4
All typical value are for VCC=3.3 V at TA=25°C unless otherwise specified.
Symbol
Parameter
Condition
VCC (V)
TA=- 40°C to +85°C
Min.
Typ.
Max.
2.4
24
40
3.0 to 3.6
13
30
2.4
15
35
3.0 to 3.6
12
25
3.3
0.25
Unit
tON
Turn-On Time
S, /OE to Output
RL=50 Ω, CL=5 pF, VSW=0.8 V,
Figure 6, Figure 7
tOFF
Turn-Off Time
S, /OE to Output
RL=50 Ω, CL=5 pF, VSW=0.8 V,
Figure 6, Figure 7
tPD
Propagation Delay
8
CL=5 pF, RL=50 Ω, Figure 6,
Figure 8
tBBM
Break-Before-Make
RL=50 Ω, CL=5 pF,
VSW1=VSW2=0.8 V, Figure 10
2.4
2.0
10
3.0 to 3.6
2.0
6.5
OIRR
Off Isolation
RL=50 Ω, f=240 MHz, Figure 12
3.0 to 3.6
-30
dB
Xtalk
Non-Adjacent Channel
Crosstalk
RL=50 Ω, f=240 MHz, Figure 13
3.0 to 3.6
-45
dB
720
MHz
550
MHz
BW
-3db Bandwidth
RL=50 Ω, CL=0 pF, Figure 11
RL=50 Ω, CL=5 pF, Figure 11
3.0 to 3.6
ns
ns
ns
ns
Note:
8. Guaranteed by characterization.
USB High-Speed-Related AC Electrical Characteristics
All typical value are for VCC=3.3 V at TA=25°C unless otherwise specified.
Symbol
tSK(P)
tJ
Parameter
Condition
VCC (V)
TA=- 40ºC to +85ºC
Min.
Skew of Opposite Transitions of
CL=5 pF, RL=50 Ω, Figure 9
(9)
the Same Output
Total Jitter
(9)
RL=50 Ω, CL=5 pF,
tR=tF=500 ps (10-90%) at
15
480 Mbps (PRBS=2 – 1)
Typ.
Max.
Unit
20
ps
200
ps
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
AC Electrical Characteristics
Note:
9. Guaranteed by characterization.
Capacitance
Symbol
Parameter
Condition
TA=- 40°C to +85°C
Min.
Typ.
CIN
Control Pin Input Capacitance
VCC=0 V
1.5
CON
D+/D- On Capacitance
VCC=3.3 V, /OE=0 V, f=240 MHz,
Figure 15
3.7
COFF
D1n, D2n Off Capacitance
VCC and /OE=3.3 V, Figure 14
2.0
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
Max.
Unit
pF
www.fairchildsemi.com
5
VON
I Dn(OFF)
NC
A
HSDn
VSW
Dn
VSW
Select
GND
I ON
GND
Select
R ON =
VON / ION
V Sel =
V Sel =
GND
**Each switch port is tested separately
0 orV cc
Figure 4. On Resistance
HSDn
Figure 5. Off Leakage
tRISE = 2.5ns
Dn
VSW
GND RS
0 orV
V cc
CL
RL
tFALL = 2.5ns
VCC
V OUT
Input – V/OE , VSel
GND
10%
GND
V Sel
90%
90%
VCC /2
VCC /2
10%
VOH
90%
GND
90%
Output- VOUT
RL , RS , and C L are functions of the application
environment (see AC Tables for specific values)
CL includes test fixture and stray capacitance.
VOL
Figure 6. AC Test Circuit Load
tON
tOFF
Figure 7. Turn-On / Turn-Off Waveforms
tRISE = 500ps
tFALL = 500ps
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
Test Diagrams
+400mV
90%
0V
- 400mV
10%
90%
10%
Output
t PHL
Figure 8. Propagation Delay (tRtF – 500 ps)
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
t PLH
Figure 9. Intra-Pair Skew Test tSK(P)
www.fairchildsemi.com
6
tRISE = 2.5ns
Vcc
HSDn
Dn
VSW1
GND
10%
0V
VOUT
CL
VSW2
90%
Vcc/2
Input - VSel
RL
V OUT
GND
GND
0.9*Vout
0.9*Vout
RS
tBBM
VSel
RL , RS , and C L are functions of the application
environment (see AC Tables for specific values)
CL includes test fixture and stray capacitance.
GND
Figure 10. Break-Before-Make Interval Timing
Network Analyzer
Network Analyzer
RS
RS
V IN
VS
GND
RT
GND
VSel
GND
GND
RS and RT are functions of the application
environment (see AC Tables for specific values).
VSel
VOUT
GND
GND
V OUT
GND
RS and RT are functions of the application
environment (see AC Tables for specific values).
GND
VS
GND
GND
RT
V IN
RT
GND
Off isolation = 20 Log (V OUT / VIN)
Figure 11. Bandwidth
Figure 12. Channel Off Isolation
Network Analyzer
NC
RS
V IN
GND
VS
VSel
GND
GND
RT
GND
GND
RT
RS and RT are functions of the application environment
(see AC Tables for specific values).
V OUT
GND
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
Test Diagrams (Continued)
Crosstalk = 20 Log (VOUT / VIN)
Figure 13. Non-Adjacent Channel-to-Channel Crosstalk
Capacitance
Meter
Capacitance
Meter
HSDn
HSDn
S=LOW or HIGH
S=LOW or HIGH
OE=LOW
OE=HIGH
Dn
Dn
Figure 14. Channel Off Capacitance
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
Figure 15. Channel On Capacitance
www.fairchildsemi.com
7
1.40
0.05 C
A
B
2X
1.80
(9X)
1.70
PIN#1 IDENT
0.563
0.663
0.05 C
TOP VIEW
2X
1
2.10
0.50±.05
0.10 C
0.15±.05
0.40
(10X) 0.225
0.08 C
SEATING C
PLANE
0.025±.025
RECOMMENDED
LAND PATTERN
SIDE VIEW
9X
0.45
1.45
0.55
1.40±.05
(0.20) 4X
0.40±.05
(9X)
3
0.40
6
DETAIL A
(10X) 0.225
1.80±.05
1
(0.60) 4X
PIN#1 IDENT
OPTIONAL MINIMIAL
TOE LAND PATTERN
10
0.20±.05 (10X)
BOTTOM VIEW
1.85
0.40
NOTES:
0.10 C A B
0.05 C
A. PACKAGE DOES NOT CONFORM TO
ANY JEDEC STANDARD.
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS AND TOLERANCES PER
ASME Y14.5M, 2009.
1.00±.05
D. LAND PATTERN RECOMMENDATION IS
EXISTING INDUSTRY LAND PATTERN.
45°
0.40±.05
E. DRAWING FILENAME: MKT-UMLP10Arev6.
DETAIL A
SCALE : 2X
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
Physical Dimensions
PACKAGE
EDGE
LEAD
OPTION 1
LEAD
OPTION 2
SCALE : 2X
SCALE : 2X
Figure 16. 10-Lead, Ultrathin Molded Leadless Package (UMLP)
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
www.fairchildsemi.com
8
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
Physical Dimensions (Continued)
Figure 17. 10-Lead, Molded Small Outline Package (MSOP)
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
www.fairchildsemi.com
9
FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.25
www.fairchildsemi.com
10
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.
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