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FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
September 2008
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Features

Description
The FSUSB30 is a low-power, two-port, high-speed USB 2.0 switch. Configured as a double-pole double-throw (DPDT) switch, it is optimized for switching between two high-speed (480Mbps) sources or a Hi-Speed and FullSpeed (12Mbps) source. The FSUSB30 is compatible with the requirements of USB2.0 and features an extremely low on capacitance (CON) of 3.7pF. The wide bandwidth of this device (720MHz), exceeds the bandwidth needed to pass the third harmonic, resulting in signals with minimum edge and phase distortion. Superior channel-to-channel crosstalk minimizes interference. The FSUSB30 contains special circuitry on the D+/ Dpins which allows the device to withstand an overvoltage condition when powered off. This device is also designed to minimize current consumption even when the control voltage applied to the S pin, is lower than the supply voltage (VCC). This feature is especially valuable to ultraportable applications such as cell phones, allowing for direct interface with the general purpose I/Os of the baseband processor. Other applications include switching and connector sharing in portable cell phones, PDAs, digital cameras, printers, and notebook computers.

Low On Capacitance: 3.7pF (Typical) Low On Resistance: 6.5 (Typical) Low Power Consumption: 1A (Maximum) - 10A Maximum ICCT over an Expanded Control Voltage Range (VIN = 2.6V, VCC = 4.3V) Wide -3dB Bandwidth, >720MHz 8KV ESD Protection Power-Off Protection when VCC = 0V; D+/D- Pins can Tolerate up to 5.5V Packaged in: - 10-lead MicroPakTM (1.6 x 2.1mm) - 14-lead DQFN - 10-lead MSOP - 10-lead UMLP (1.4 x 1.8mm) Cell phone, PDA, Digital Camera, and Notebook LCD Monitor, TV, and Set-top Box AN-6022 Using the FSUSB30 / FSUSB31 to Comply with USB 2.0 Fault Condition Requirements
Applications
Related Application Notes
Ordering Information
Order Number
FSUSB30L10X FSUSB30BQX FSUSB30MUX FSUSB30UMX
Package Number
MAC010A MLP014A MUA10A MLP010A
Product Code Top Mark
FJ USB30 FSUSB30 GJ
Eco Status
RoHS Green Green Green
Package Description
10-Lead MicroPak, 1.6 x 2.1mm 14-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 3.0mm 10-Lead Molded Small Outline Package (MSOP), JEDEC MO-187, 3.0mm Wide 10-Lead, Quad, Ultrathin, MLP (UMLP) 1.4 x 1.8mm
For Fairchild's definition of "green" Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
1D+ USB2.0 Controller Set Top Box (STB) CPU or DSP Processor 1D- D- 2D+ DVR or Mass Storage 2D- Controller Control S OE VCC FSUSB30 D+ USB Connector
Figure 1. Typical Application
MicroPakTM is a trademark of Fairchild Semiconductor Corporation.
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6 www.fairchildsemi.com
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Connection Diagrams
Pad Assignments for MicroPak
HSD1- HSD2- OE
Analog Symbol
HSD1+ D+
D-
HSD2+ HSD1- D-
GND
9
8
7
6
VCC
10
5
HSD2- S OE Control
1
2
3
4
S
HSD1+
(Top View)
HSD2+
D+
Pin Descriptions
Pin Name
OE S
13 12 11 10 9
Pad Assignments for DQFN
NC
1
Description
Bus Switch Enable Select Input Data Ports No Connect
VCC
14
S HSD1+ NC HSD2+ D+
2 3 4 5 6 7 8
OE HSD1- NC HSD2- D-
D+, D-, HSDn+, HSDn- NC
Truth Table
S
X LOW HIGH
GND NC (Top Through View)
OE
HIGH LOW LOW
Function
Disconnect D+, D- = HSD1n D+, D- = HSD2n
Pin Assignment for MSOP
S HSD1+ HSD2+ D+ GND VCC OE HSD1- HSD2- D-
1
10
2 3 4
9 8 7
5
6
(Top Through View)
Pad Assignments for MLP
HSD1-
7
HSD2-
6
OE VCC Sel
8 9 10
5 4
D- GND D+
1
2
3
HSD1+
(Top Through View)
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
HSD2+
www.fairchildsemi.com 2
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) 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
VCC VCNTRL VSW IIK IOUT TSTG ESD Supply Voltage DC Input Voltage
(1)
Parameter
Minimum
-0.5 -0.5
Maximum
+5.5 VCC VCC VCC VCC 50
Unit
V V V V V mA mA C kV kV
HSDnX DC Switch Voltage
(1)
0.5 0.5 -0.50 -50 -65
D+,D- when VCC > 0 D+,D- when VCC = 0
DC Input Diode Current DC Output Current Storage Temperature Human Body Model All Pins I/O to GND
+150 8 8
Note: 1. The input and output negative voltage 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.(2)
Symbol
VCC VIN VSW TA JA Supply Voltage
Parameter
Control Input Voltage Switch Input Voltage Operating Temperature Thermal Resistance, 10 MicroPak
Minimum
3.0 0 0 -40
Maximum
4.3 VCC VCC +85 250
Unit
V V V C C/W
Note: 2. Control input must be held HIGH or LOW and it must not float.
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 3
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
DC Electrical Characteristics
All typical values are at 25C unless otherwise specified.
Symbol
VIK VIH VIL IIN IOZ IOFF RON RON
Parameter
Clamp Diode Voltage Input Voltage HIGH Input Voltage LOW Control Input Leakage OFF State Leakage Power OFF Leakage Current (D+, D-) Switch On Resistance(3) Delta RON(4)
Conditions
IIN = -18mA
VCC (V)
3.0 3.0 to 3.6 4.3 3.0 to 3.6 4.3
TA = -40C to +85C Min.
1.3 1.7 0.5 0.7 -1.0 -2.0 -2.0 6.5 0.35 2.0 1.0 10.0 1.0 2.0 2.0 10.0 7.0
Typ.
Max.
-1.2
Unit
V V V V V A A A A A
VSW = 0.0V to VCC 0 Dn, HSD1n, HSD2n VCC VSW = 0V to 4.3V, VCC = 0V VSW = 0.4V, ION = -8mA VSW = 0V, IO = 30mA at 25C VSW = 0.4V, ION = -8mA VSW = 0.0V - 1.0V, ION = -8mA VCNTRL = 0.0V or VCC, IOUT = 0 VCNTRL (control input) = 2.6V
4.3 4.3 0 3.0 3.6 3.0 3.0 4.3 4.3
RON Flatness RON Flatness(3) ICC ICCT Quiescent Supply Current Increase in ICC Current per Control Voltage
Notes: 3. Measured by the voltage drop between Dn, HSD1n, HSD2n pins at the indicated current through the switch. On resistance is determined by the lower of the voltage on the two ports. 4.Guaranteed by characterization.
AC Electrical Characteristics
All typical values are for VCC = 3.3V at 25C unless otherwise specified.
Symbol
tON tOFF tPD tBBM OIRR Xtalk BW
Parameter
Turn-On Time S, OE to Output Turn-Off Time S, OE to Output Propagation Delay(4) Break-Before-Make Off Isolation (Non-Adjacent) Non-Adjacent Channel Crosstalk -3dB Bandwidth
Conditions
HD1n, HD2n = 0.8V, RL = 50, CL = 5pF HD1n, HD2n = 0.8V, RL = 50, CL = 5pF RL = 50, CL = 5pF RL = 50, CL = 5pF, VIN = 0.8V f = 240MHz, RT = 50 RT = 50, f = 240MHz RT = 50, CL = 0pF RT = 50, CL = 5pF
VCC (V)
3.0 to 3.6 3.0 to 3.6 3.3 3.0 to 3.6 3.0 to 3.6 3.0 to 3.6 3.0 to 3.6
TA = -40C to +85C Min. Typ.
13 12 0.25 2.0 -30 -45 720 550 6.5
Max.
30 25
Unit
ns ns ns ns dB dB MHz
Figure Number
Figure 9 Figure 9 Figure 7 Figure 8 Figure 10 Figure 13 Figure 14 Figure 12
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 4
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
USB Hi-Speed Related AC Electrical Characteristics
Symbol
tSK(O) tSK(P)
Parameter
Channel-to-Channel Skew(5) Skew of Opposite Transitions of the Same Output(5) Total Jitter(5)
Conditions
RL = 50, CL = 5pF RL = 50, CL = 5pF RL = 50, CL = 5pF, tR = tF = 500ps at 480 Mbps (PRBS = 215 - 1)
VCC (V)
3.0 to 3.6 3.0 to 3.6
TA = -40C to +85C Min. Typ.
50 20
Max.
Units
ps ps
Figure Number
Figure 7 Figure 11 Figure 7 Figure 11
tJ
3.0 to 3.6
200
ps
Note: 5. Guaranteed by characterization.
Capacitance
Symbol
CIN CON COFF
Parameter
Control Pin Input Capacitance D1n, D2n, Dn On Capacitance D1n, D2n Off Capacitance
Conditions
VCC = 0V VCC = 3.3, OE = 0V VCC and OE = 3.3
TA = -40C to +85C Min. Typ.
1.5 3.7 2.5
Max.
Units
pF pF pF
Figure Number
Figure 16 Figure 15 Figure 16
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 5
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Typical Characteristics
Frequency Response
0 -1 -2 Gain (dB) -3 -4 -5 -6 -7 -8 1 10 100 Frequency (MHz) 1000 10000
CL = 0pF, VCC = 3.3V
Figure 2. Gain vs. Frequency
Frequency Response
0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 1
Off Isolation (dB)
10 Frequency (MHz)
100
1000
Figure 3. Off Isolation
Frequency Response
0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 1
Crosstalk (dB)
10 Frequency (MHz)
100 VCC = 3.3V
1000
Figure 4. Crosstalk
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 6
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Test Diagrams
VON
NC HSDn Dn VIN GND Select VS = 0 to VCC RON = VON / ION GND ION
IDn(OFF)
A
VIN Select GND VS = 0 or VCC Each switch port is tested separately.
Figure 5. On Resistance
Figure 6. Off Leakage
HSDn D+, D- VIN GND RS CL GND VSel GND RL, RS, and CL are functions of the application environment (see AC Electrical tables for specific values). CL includes test fixture and stray capacitance. RL VOUT
tRISE = 500ps 800mV Input: HSDn+, HSDn- 400mV VOH Output: D+, D- VOL tPLH
50% 90% 50% 10% 90% 50%
tFALL = 500ps
10%
50%
tPHL
Figure 7. AC Test Circuit Load
Figure 8. Switch Propagation Delay Waveforms
tRISE = 2.5ns VCC Input - S, OE GND
10% 90% VCC/2 90% VCC/2
tFALL = 2.5ns
10%
VOH Output - VOUT VOL tON
90%
90%
tOFF
Figure 9. Turn-On / Turn-Off Waveform
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 7
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
VCC VCC VO HSDn D+, D- HSDn RL S Control Input GND VOUT C L* VOUT Control Input VCC
50%
0V
tR = tF = 2.5ns (10-90%)
0.9 x VOUT tD
*CL includes test fixture and stray capacitance.
Figure 10. Break-Before-Make (tBBM)
tRISE = 500ps 800mV Input: D+, D- 400mV tRISE = 500ps 800mV Input: HSDn+ HSDn- 400mV
10% 90% 50% 10% 90% 50% 90% 50% 10%
tFALL = 500ps
tFALL = 500ps VOH Output1: HSD1+ HSD1- VOL
10%
90% 50%
50%
50%
tPLH1
tPHL1
VOH Output: D+, D- VOL tPLH TSK(P) = | tPHL - tPLH | Pulse Skew, TSK(P) tPHL
50% 50%
VOH Output1: D2+, D2- VOL tPLH2 tPHL2
50% 50%
TSK(O) = | tPLH1 - tPLH2 | or | tPHL1 - tPHL2 | Output Skew, TSK(OUT)
Figure 11. Switch Skew Tests
Network Analyzer FSUSB30 VIN GND VSel GND VOUT GND RS and RT are functions of the application environment (See AC Electrical Tables for specific values). RT GND RS VS GND
Figure 12. Bandwidth
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 8
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Network Analyzer FSUSB30 VIN RT VSel GND GND GND OFF-Isolation = 20 Log (VOUT / VIN) VOUT RT GND GND RS VS GND
Figure 13. Channel Off Isolation
NC FSUSB30
Network Analyzer RS VIN GND VS GND RT GND
VSel GND
GND RS and RT are functions of the application environment (50, 75 or 100) Crosstalk = 20 Log (VOUT / VIN)
RT GND
VOUT
Figure 14. Non-Adjacent Channel-to-Channel Crosstalk
Capacitance Meter f = 240MHz
Dn
FSUSB30 S VSel = 0 or VCC Capacitance Meter f = 240MHz
Dn
FSUSB30 S VSel = 0 or VCC D1n, D2n
D1n, D2n
Figure 15. Channel On Capacitance
Figure 16. Channel Off Capacitance
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 9
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Application Guidance: Meeting USB 2.0 Vbus Short Requirements
In section 7.1.1 of the USB 2.0 specification, it notes that USB devices must be able to withstand a Vbus short to D+ or D- when the USB devices is either powered off or powered on. The FSUSB30 can be successfully configured to meet both these requirements.
Power-On Protection
The USB 2.0 specification also notes that the USB device should be capable of withstanding a Vbus short during transmission of data. Fairchild recommends adding a 100 series resister between the switch VCC pin and supply rail to protect against this case. This modification works by limiting current flow back into the VCC rail during the over-voltage event so current remains within the safe operating range. In this application, the switch passes the full 5.25V input signal through to the selected output, while maintaining specified off isolation on the un-selected pins.
Power-Off Protection
For a Vbus short circuit, the switch is expected to withstand such a condition for at least 24 hours. The FSUSB30 has specially designed circuitry which prevents unintended signal bleed through as well as guaranteed system reliability during a power-down, overvoltage condition. The protection has been added to the common pins (D+, D-).
VCC= 3.6 V
100 Ohms HSD+ HSD+ HSDHSD-
D+ = 5.25V
FSUSB30
D- = 5.25V
Figure 17. Adding 100 resistor in series with the VCC supply allows the FSUSB30 to withstand a Vbus short when powered up
For more information, see Applications Note AN-6022 Using the FSUSB30 to Comply with USB 2.0 Fault Condition Requirements at www.fairchildsemi.com
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 10
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Tape and Reel Specifications
Tape Format for DQFN Package Designator
BQX
Tape Section
Leader (Start End) Carrier Trailer (Hub End)
Number Cavities
125 (typ) 2500/3000 75 (typ)
Cavity Status
Empty Filled Empty
Cover Tape Status
Sealed Sealed Sealed
Tape Dimensions
Dimenions are in millimeters unless otherwise specified.
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 11
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Reel Dimensions for DQFN
Dimensions are in inches (millimeters) unless otherwise specified.
Tape Size
(12mm)
A
13.0 (330)
B
0.059 (1.50)
C
0.512 (13.00)
D
0.795 (20.20)
N
7.008 (178)
W1
0.488 (12.4)
W2
0.724 (18.4)
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 12
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Tape Dimensions for MSOP
Dimensions are in inches (millimeters) unless otherwise specified.
Reel Dimensions for MSOP
Dimensions are in inches (millimeters) unless otherwise specified
Tape Size
(12mm)
A
13 (330)
B
0.059 (1.5)
C
0.512 (13)
D
0.795 (20.2)
N
7.008 (178)
W1
0.448 (12.4)
W2
0.724 (18.4)
W3
0.468-0.606 (11.9 -15.4)
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 13
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Physical Dimensions
Figure 17. 10-Lead MicroPak, 1.6 x 2.1mm
For tape and reel specifications, visit Fairchild's website: http://www.fairchildsemi.com/products/logic/pdf/micropak_tr.pdf. 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/.
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 14
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Physical Dimensions
Figure 18. 14-Terminal De-populated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 3.0mm
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/.
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 15
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Physical Dimensions
Figure 19. 10-Lead Molded Small Outline Package (MSOP), JEDEC MO-187, 3.0mm Wide
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/.
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 16
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
Physical Dimensions
Figure 20. 10-Lead, Quad, Ultrathin Molded Leadless Package (UMLP), 1.4 x 1.8mm
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/.
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 17
FSUSB30 Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch
(c) 2006 Fairchild Semiconductor Corporation FSUSB30 Rev. 1.1.6
www.fairchildsemi.com 18

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