FSUSB31K8X [ONSEMI]

低功耗双 SPST 高速 USB 2.0 (480 Mbps) 开关;
FSUSB31K8X
型号: FSUSB31K8X
厂家: ONSEMI    ONSEMI
描述:

低功耗双 SPST 高速 USB 2.0 (480 Mbps) 开关

开关 光电二极管 输出元件
文件: 总16页 (文件大小:924K)
中文:  中文翻译
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February 2009  
FSUSB31  
Low-Power, Single-Port, High-Speed USB 2.0 (480Mbps)  
Switch  
Features  
Description  
Low On Capacitance: 3.7pF (Typical)  
Low On Resistance: 6.5Ω (Typical)  
Low Power Consumption: 1µA (Maximum)  
The FSUSB31 is a low-power, single-port, high-speed  
USB 2.0 switch. This part is configured as a double-pole,  
single-throw switch and is optimized for switching or iso-  
lating a high-speed (480Mbps) source or a high-speed  
and full-speed (12Mbps) source. The FSUSB31 is com-  
patible 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 band-  
width needed to pass the third harmonic, resulting in sig-  
nals with minimum edge and phase distortion. Superior  
channel-to-channel crosstalk minimizes interference.  
– 10µA Maximum ICCT Over an Expanded Control  
Voltage Range: VIN =2.6V, VCC =4.3V  
Wide -3dB Bandwidth: > 720MHz  
8kV I/O to GND ESD Protection  
Power-off Protection When VCC = 0V, D+/D- Pins Can  
Tolerate up to 5.5V  
Packaged in:  
– 8-lead MicroPak™ (1.6 x 1.6mm)  
– 8-lead US8  
The FSUSB31 contains special circuitry on the D+ / D-  
pins that allows the device to withstand an over-voltage  
condition. This device is also designed to minimize cur-  
rent consumption even when the control voltage applied  
to the OE pin is lower than the supply voltage (VCC). This  
feature is especially valuable for mobile applications,  
such as cell phones, allowing direct interface with the  
general-purpose I/Os of the baseband processor. Other  
applications include port isolation and switching in porta-  
ble cell phones, PDAs, digital cameras, printers, and  
notebook computers.  
– 8-lead Ultrathin MLP (1.2 x 1.4mm)  
Applications  
Cell Phone, PDA, Digital Camera, and Notebook  
LCD Monitor, TV, and Set-top Box  
Related Resources  
AN-6022 Using the FSUSB30/31 to Comply with  
USB 2.0 Fault Condition Requirements  
Ordering Information  
Part Number Package  
Eco Status  
Green  
Package Description  
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide  
8-Lead MicroPak, 1.6mm Wide  
FSUSB31K8X  
FSUSB31L8X  
FSUSB31UMX  
MAB08A  
MAC08A  
UMLP08A  
RoHS  
Green  
8-Lead, Ultrathin Molded Leadless Package (UMLP), 1.2 x 1.4mm  
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.  
Application Diagram  
FSUSB31  
V
CC  
D+  
D–  
USB  
Connector  
Base Band  
Processor  
or FS USB  
Controller  
OE  
HS USB  
Controller  
Figure 1. Typical Application Diagram  
MicroPakis a trademark of Fairchild Semiconductor Corporation.  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
Analog Symbol  
Pin Descriptions  
Pin Name  
Description  
Bus Switch Enable  
Data Ports  
HSD+  
OE  
D+, D, HSD+, HSD−  
NC  
D+  
D–  
No Connect  
HSD–  
OE  
Truth Table  
Function  
OE  
Control  
HIGH  
LOW  
Disconnect  
D+, D= HSD+, HSD-  
Figure 2. Analog Symbol  
Connection Diagrams  
7
6
2
5
VCC  
8
4
3
GND  
1
Figure 3. Pin Assignments for MicroPak  
1
8
NC  
HSD–  
D–  
VCC  
2
3
4
7
6
5
OE  
HSD+  
D+  
GND  
Figure 4. Pin Assignments for US8  
Figure 5. Pin Assignments for UMLP  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
2
Absolute Maximum Ratings  
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-  
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-  
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The  
absolute maximum ratings are stress ratings only.  
Symbol  
Parameter  
Minimum  
-0.5  
Maximum  
Unit  
V
V
Supply Voltage  
5.5  
CC  
(1)  
V
DC Input Voltage  
-0.5  
V
V
V
V
S
IN  
IK  
CC  
CC  
CC  
HSD  
-0.5  
V
(1)  
V
DC Switch Voltage  
D+, D−  
-0.5  
V
I
DC Input Diode Current  
DC Output Current  
-50  
mA  
mA  
°C  
kV  
kV  
I
50  
OUT  
T
Storage Temperature  
-65  
+150  
7.5  
8
STG  
All Pins  
Human Body Model:  
JESD22-A114  
ESD  
I/O to GND  
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.  
Symbol  
Parameter  
Minimum  
Maximum  
Unit  
V
V
Supply Voltage  
3.0  
0
4.3  
CC  
(2)  
V
Control Input Voltage  
Switch Input Voltage  
V
V
V
IN  
CC  
CC  
0
V
T
Operating Temperature  
-40  
+85  
°C  
A
Note:  
2. Control input must be held HIGH or LOW and it must not float.  
© 2006 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FSUSB31 Rev. 1.1.0  
3
DC Electrical Characteristics  
All typical values are at 25°C unless otherwise specified.  
T = 40°C to +85°C  
A
V
(V)  
Symbol  
Parameter  
Conditions  
Unit  
CC  
Min.  
Typ. Max.  
V
Clamp Diode Voltage  
Input Voltage HIGH  
I
= 18mA  
IN  
3.0  
-1.2  
V
V
IK  
3.0 to 3.6  
4.3  
1.3  
1.7  
V
IH  
3.0 to 3.6  
4.3  
0.5  
0.7  
1.0  
2.0  
V
V
I
Input Voltage LOW  
IL  
Control Input Leakage  
OFF State Leakage  
V
= 0V to V  
0 to V  
-1.0  
-2.0  
μA  
μA  
IN  
IN  
CC  
CC  
I
0 HSD V  
4.3  
OZ  
CC  
Power OFF Leakage  
Current (D+, D–)  
V
V
= 0.0V to 4.3V,  
IN  
I
0
-2.0  
2.0  
μA  
OFF  
= 0V  
CC  
(3)  
R
Switch On Resistance  
V
V
= 0.4V, I = 8mA  
3.0  
3.0  
6.5  
10.0  
Ω
Ω
ON  
IN  
IN  
IN  
ON  
(4)  
ΔR  
Delta R  
= 0.4V, I = 8mA  
0.35  
ON  
ON  
ON  
V
I
= 0.0V 1.0V,  
= 8mA  
(3)  
R
Flatness R Flatness  
3.0  
4.3  
2.0  
Ω
ON  
ON  
ON  
V
= 0.0V or V  
,
CC  
IN  
I
Quiescent Supply Current  
1.0  
μA  
CC  
I
= 0  
OUT  
Increase in I Current  
CC  
I
per Control Voltage and  
V
= 2.6V, V = 4.3V  
4.3  
10.0  
μA  
CCT  
IN  
CC  
V
Levels  
CC  
Notes:  
3. Measured by the voltage drop between Dn, HSD, and Dn 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 are at 25°C unless otherwise specified.  
T = 40°C to +85°C  
A
Figure  
Number  
V
(V)  
Symbol  
Parameter  
Conditions  
Unit  
CC  
Min. Typ. Max.  
Turn-On Time,  
OE to Output  
V
= 0.8V, R = 50Ω,  
IN  
L
t
3.0 to 3.6  
3.0 to 3.6  
3.3  
15.0  
12.0  
0.25  
30.0  
25.0  
ns  
ns  
ns  
ns  
dB  
dB  
Figure 13  
Figure 13  
ON  
C = 5pF  
L
Turn-Off Time,  
OE to Output  
V
= 0.8V, R = 50Ω,  
IN L  
t
OFF  
C = 5pF  
L
Figure 11  
Figure 12  
(5)  
t
Propagation Delay  
R = 50Ω, C = 5pF  
L L  
PD  
R = 50Ω, C = 5pF,  
V
L
L
t
Break-Before-Make  
3.0 to 3.6  
3.0 to 3.6  
3.0 to 3.6  
2.0  
6.5  
Figure 14  
Figure 17  
Figure 18  
BBM  
= 0.8V  
IN  
Off Isolation  
(Non-Adjacent)  
O
R = 50Ω, f = 240MHz  
-35.0  
-55.0  
IRR  
T
Non-Adjacent Channel  
Crosstalk  
Xtalk  
BW  
R = 50Ω, f = 240MHz  
T
R = 50Ω, C = 0pF  
720  
550  
T
L
-3dB Bandwidth  
3.0 to 3.6  
MHz Figure 16  
R = 50Ω, C = 5pF  
T
L
Note:  
5. Guaranteed by characterization.  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
4
USB Hi-Speed Related AC Electrical Characteristics  
T = 40°C to  
A
Figure  
Number  
+85°C  
V
(V)  
Symbol  
Parameter  
Conditions  
Unit  
CC  
Min. Typ. Max.  
Channel-to-Chan-  
nel Skew  
Figure 11  
Figure 15  
t
C = 5pF  
3.0 to 3.6  
3.0 to 3.6  
50.0  
ps  
ps  
(6)  
SK(O)  
L
Skew of Opposite  
Transitions of the  
Figure 11  
Figure 15  
t
C = 5pF  
20.0  
SK(P)  
L
(6)  
Same Output  
R = 50Ω, C = 5pF,  
L
L
(6)  
t
Total Jitter  
t = t = 500ps at 480 Mbps 3.0 to 3.6  
200  
ps  
J
R
F
15  
(PRBS = 2 1)  
Note:  
6. Guaranteed by design.  
Capacitance  
T = 40°C to +85°C  
A
Figure  
Number  
Symbol  
Parameter  
Conditions  
Unit  
Min.  
Typ.  
1.0  
Max.  
C
Control Pin Input Capacitance  
On Capacitance  
V
V
V
= 0V  
pF  
pF  
pF  
Figure 20  
Figure 19  
Figure 20  
IN  
CC  
CC  
CC  
C
= 3.3V, OE = 0V  
and OE = 3.3V  
3.7  
ON  
C
Off Capacitance  
1.7  
OFF  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
5
Typical Characteristics  
0
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
-100  
VCC = 3.3V  
-1  
CL = 0pF  
VCC = 3.3V  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
1
10  
100  
1000  
10000  
1
10  
100  
1000  
Frequency (MHz)  
Frequency (MHz)  
Figure 6. Gain vs. Frequency  
Figure 7. Off Isolation  
0
-10  
-20  
VCC = 3.3V  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
-100  
-110  
-120  
1
10  
100  
1000  
Frequency (MHz)  
Figure 8. Crosstalk  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
6
Test Diagrams  
VON  
FSUSB31  
FSUSB31  
IDn(OFF)  
NC  
HSD  
VIN  
Dn  
A
VIN  
ION  
OE  
VS = 0 or VCC  
OE  
VS = 0 to VCC  
GND  
GND  
GND  
RON = VON / ION  
Each switch port is tested separately.  
Figure 9. On Resistance  
Figure 10. Off Leakage  
FSUSB31  
tFALL = 500ps  
tRISE = 500ps  
400mV  
HSD  
VIN  
D+, D–  
CL*  
90%  
50%  
90%  
50%  
VOUT  
RL  
Input: HSD+,  
HSD–  
RS  
GND  
10%  
10%  
0V  
GND  
VOE  
VOH  
GND  
Output: D+, D–  
50%  
50%  
RL, RS, and CL are functions of the application environment  
(see AC Electrical tables for specific values).  
VOL  
tPLH  
tPHL  
*CL includes test fixture and stray capacitance.  
Figure 11. AC Test Circuit Load  
Figure 12. Switch Propagation Delay Waveforms  
(tPD  
)
tFALL = 2.5ns  
tRISE = 2.5ns  
VCC  
90%  
/2  
90%  
Input – OE  
V
V
/2  
CC  
CC  
10%  
10%  
GND  
VOH  
Output – VOUT  
VOL  
90%  
90%  
tON  
tOFF  
Figure 13. Turn On / Turn Off Waveform (tON / tOFF  
)
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
7
Test Diagrams (Continued)  
VCC  
VCC  
HSDn  
VO  
VOUT  
CL*  
VCC  
0V  
D+, D–  
Control  
Input  
HSDn  
50%  
RL  
tR = tF = 2.5ns (10–90%)  
S
VOUT  
Control  
Input  
GND  
0.9 x VOUT  
tD  
*CL includes test fixture and stray capacitance.  
Figure 14. Break-Before-Make (tBBM  
)
tFALL = 500ps  
tRISE = 500ps  
400mV  
90%  
50%  
90%  
50%  
Input: D+, D–  
10%  
10%  
0V  
t
FALL = 500ps  
tRISE = 500ps  
400mV  
VOH  
Output1: HSD1+  
HSD1–  
VOL  
90%  
50%  
90%  
50%  
50%  
50%  
Input: HSDn+  
HSDn–  
10%  
10%  
tPLH1  
tPHL1  
0V  
VOH  
VOH  
50%  
50%  
50%  
50%  
Output1: D2+, D2–  
VOL  
Output: D+, D–  
VOL  
tPLH  
tPHL  
tPLH2  
tPHL2  
TSK(P) = | tPHL – tPLH  
Pulse Skew, TSK(P)  
|
TSK(O) = | tPLH1 – tPLH2 | or | tPHL1 – tPHL2  
Output Skew, TSK(OUT)  
|
Figure 15. Switch Skew Tests  
Network Analyzer  
FSUSB31  
RS  
VIN  
VS  
GND  
GND  
V
OE  
GND  
VOUT  
RT  
GND  
RS and RT are functions of the application environment  
(see AC Electrical Tables for specific values).  
GND  
Figure 16. Bandwidth  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
8
Test Diagrams (Continued)  
Network Analyzer  
FSUSB31  
RS  
VIN  
VS  
GND  
GND  
RT  
V
OE  
GND  
GND  
GND  
VOUT  
RT  
GND  
OFF-Isolation = 20 Log (VOUT /VIN  
)
Figure 17. Channel Off Isolation  
NC  
Network Analyzer  
FSUSB31  
RS  
VIN  
VS  
GND  
V
GND  
OE  
GND  
RT  
GND  
RT  
VOUT  
GND  
R
S and RT are functions of the application environment  
GND  
(50, 75 or 100Ω).  
Crosstalk = 20 Log (VOUT / VIN  
)
Figure 18. Non-Adjacent Channel-to-Channel Crosstalk  
FSUSB31  
FSUSB31  
Dn  
Dn  
Capacitance  
Meter  
OE  
OE  
Capacitance  
VOE = 0 or VCC  
Meter  
VOE = 0 or VCC  
F = 240MHz  
F = 240MHz  
HSDn  
HSDn  
Figure 19. Channel On Capacitance  
Figure 20. Channel Off Capacitance  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
9
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 FSUSB31 can be successfully config-  
ured 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 add-  
ing a 100Ω series resister between the switch VCC pin  
and supply rail to protect against this case. This modifi-  
cation 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 with-  
stand such a condition for at least 24 hours. The  
FSUSB31 has specially designed circuitry which pre-  
vents unintended signal bleed through as well as guar-  
anteed system reliability during a power-down, over-  
voltage condition. The protection has been added to the  
common pins (D+, D-).  
VCC= 3.6 V  
100 Ohms  
D+ = 5.25V  
HSD+  
HSD-  
FSUSB31  
D- = 5.25V  
Figure 21. A 100Ω resistor in series with the VCC supply allows the FSUSB31 to withstand a Vbus  
short when powered up  
For more information, see Applications Note AN-6022 — Using the FSUSB30/FSUSB31 to Comply with  
USB 2.0 Fault Condition Requirements at www.fairchildsemi.com.  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
10  
Physical Dimensions  
Figure 22. 8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide  
For MicroPak™ tape and reel specifications, please visit Fairchild’s website: http://www.fairchildsemi.com/ms/MS/MS-522.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, specif-  
ically 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/.  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
11  
Physical Dimensions (Continued)  
2X  
C
0.10  
A
1.6  
B
1.6  
INDEX AREA  
C
2X  
0.10  
TOP VIEW  
0.55 MAX  
0.05 C  
Recommended Landpattern  
(0.20)  
C
0.05  
0.05  
0.00  
C
DETAIL A  
8X(0.09)  
1.0  
0.35  
0.25  
0.5  
1
2
3
(0.1)  
4
8
4
(0.15)  
0.35  
0.25  
7
6
5
0.35  
0.15  
0.25  
8X  
8X  
DETAIL A  
0.25  
(0.2)  
0.10  
0.05  
C A B  
C
PIN #1 TERMINAL  
SCALE: 2X  
3X  
BOTTOM VIEW  
Notes:  
1. PACKAGE CONFORMS TO JEDEC MO-255 VARIATION UAAD  
2. DIMENSIONS ARE IN MILLIMETERS  
3. DRAWING CONFORMS TO ASME Y.14M-1994  
4. PIN 1 FLAG, END OF PACKAGE OFFSET  
5. DRAWING FILE NAME: MKT-MAC08AREV4  
MAC08AREV4  
Figure 23. 8-Lead MicroPak, 1.6mm Wide  
For MicroPak™ tape and reel specifications, please 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, specif-  
ically 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/.  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
12  
Physical Dimensions (Continued)  
1.450  
C
2X  
0.10  
0.725  
0.450  
B
1.4  
A
0.400  
1.20  
1.250  
0.350 7X  
0.250 8X  
0.625  
C
0.10  
2X  
TOP VIEW  
0.55 MAX  
0.05 C  
SEATING  
PLANE  
0.025  
0.00  
C
0.05  
C
0.40  
0.35  
7X  
0.25  
2
4
DETAIL A  
0.10  
0.30  
5
1
45°  
8
6
0.20  
0.15  
PIN#1 IDENT  
8X  
0.25  
0.10  
(0.2)  
0.10  
0.05  
C A B  
C
BOTTOM VIEW  
DETAIL: A  
SCALE : 2x  
NOTES:  
A. DOES NOT CONFORMS TO JEDEC STANDARD.  
B. DIMENSIONS ARE IN MILLIMETERS.  
C. DIMENSIONS AND TOLERANCES CONFORMS TO ASME Y14.5M, 1994.  
D. DRAWING FILE NAME : UMLP08Arev1  
Figure 24. 8-Lead, Ultrathin Molded Leadless Package (UMLP), 1.2 x 1.4mm  
For MicroPak™ tape and reel specifications, please 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, specif-  
ically 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/.  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
www.fairchildsemi.com  
13  
© 2006 Fairchild Semiconductor Corporation  
FSUSB31 Rev. 1.1.0  
14  
www.fairchildsemi.com  
ON Semiconductor and  
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.  
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