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STUSB03E
USB Transceiver
General features

Compliant to USB V2.0 for full-speed (12Mb/s) and low-speed (1.5Mbps) operation HBM = 14kV on D+, D- lines; 5kV on VBUS ESD Compliant to IEC-61000-4.2 (level 3) on D+, D- lines Separate I/O supply with operation down to 1.6V Integrated 3.3V output LDO Very low power consumption to meet USB `suspend' current requirements Small QFN16 lead free package 3x3 mm2 No power supply sequencing requirements Software controlled re-enumeration Integrated D+ pull-up resistor for FS operation detect the presence of the VBUS voltage and features an internal D+ pull-up resistor implemented in accordance with the 27% resistor ECN. The STUSB03E also supports Sharing mode when VBUS is not present, which allows the D+/D- lines to be shared with other serial protocols. It supports both full-speed (12Mbps) and lowspeed (1.5Mbps) operation. It is also designed to operate down to 1.6V so that it is compatible with lower system voltages of most portable systems, which include PDAs, MP3 Player and Cell phones.
QFN16 (3mm x 3mm)

Description
The STUSB03E is a single chip transceiver that complies with the physical layer specifications of the Universal Serial Bus (USB) v2.0 standard. It has an integrated 5V to 3.3V regulator which allows direct powering from the VBUS. The transceiver has an integrated voltage detector to
Order code
Part number STUSB03EQR Package QFN16 (3mm x 3mm) Packaging 3000 parts per reel
March 2007
Rev. 2
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www.st.com
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Contents
STUSB03E
Contents
1 2 3 4 5 6 7 8 9 10 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Functional tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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STUSB03E
Typical application
1
Figure 1.
Typical application
Application circuit
3/20
Pin configuration
STUSB03E
2
Figure 2.
Pin configuration
Pin connections (Top View)
Table 1.
Pln N 1 2 3 4 5 6 7 8 9 10, 11 12 13 14 15 16 EXP 4/20
Pin description
Symbol SPD RCV VP VM CON GND SUS RSEL OE# D-, D+ VTRM VPU VBUS VIF VBUSDET N.C. I/O I O I/O I/O I I I I I/O O O I I O Name and function Speed selection input. A logic HIGH operates at edge rates for "fullspeed" operation. A logic LOW operates edge rates for "lowspeed" operation. See also CON pin. Receive Data. Output for USB differential data. (see Table 2) If OE# = H, VP = Receiver output (+) If OE# = L, VP = Driver input (+) (see Table 2) If OE# = H, VM = Receiver output (-) If OE# = L, VM = Driver input (-) (see Table 2) CONNECT (input). Connects the internal pull-up resistor to D+ if SPD and RSEL are logic high. Controls status of VPU pin if SPD or RSEL is logic low. Ground reference Suspend (active-high). Turns off internal circuits to reduce supply current. Full speed pull-up resistor selection input. If RSEL = 0 the internal pull-up resistor connected to D+ is disabled and an external resistor connected to VPU pin must be used. Output Enable (active-low). Enables transceiver data transmission onto the bus. When not active, the transceiver is in the receive mode. (see Table 2) Differential data lines that conform to the USB v2.0 standard. (see Table 2) 3.3V Reference Supply Output. Requires a 1.0F decoupling capacitor for stability. Pull-up Supply Voltage Output. Used to connect 1.5K pull-up speed detect resistor when RSEL or SPD is logic low. If CON = 0, VPU is high impedance. If CON = 1, VPU = 3.3V 10% (see Table 4.). USB Bus Supply Voltage (4V to 5.5V). Supplies power to the USB transceiver and internal circuitry. System Interface Supply Voltage (1.6V to 3.6V). Provides reference supply voltage for system I/O interface signals. VBUS indicator output. When VBUS > 4.0V, VBUSDET = High; when < 3.6V, VBUSDET = Low (VIF referred). Not connected.
STUSB03E
Functional tables
3
Table 2.
SUS L L H H
Functional tables
Function selection
OE# L H L H D+, DDriving Receiving Hi-Z Hi-Z RCV Active Active L L VP/VM Active Active Not Active Active Function Normal transmit mode Normal receive mode Low power state Receiving during suspend (low power state) (1)
(1) During suspend VP and VM are active in order to detect out of band signalling conditions
Table 3.
VBUS VIF D+, D-, VP, VM RCV SPD VBUSDET VPU
Sharing mode pin configuration
Input/output Floating or connected to GND 1.6V to 3.6V input High impedance High Low High impedance Low High impedance High impedance inputs Status
#OE, SUS, CON
Table 4.
SPD H H H L L
VPU Status
RSEL H L L X X CON X L H L H High impedance High impedance 3.3V 10% High impedance 3.3V 10% VPU
Table 5.
OE# = L
Truth table during normal Mode
Input VP L L H H OE# = H Input D+ L L H H
X = Undefined
Output VM L H L H D+ L L H X DL H L X Output DL H L H VP L L H X VM L H L X RCV X L H X RCV X L H X
Result SE0 Logic Low Logic High Undefined
RESULT SE0 Logic Low Logic High Undefined
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Maximum ratings
STUSB03E
4
Table 6.
Symbol VBUS V+ IO IO II ESD TSTG TOPR
Maximum ratings
Absolute maximum ratings
Parameter Supply Voltage All other Inputs Output Current (D+, D-) Output Current (all others) Input Current D+, D-, HBM (Note 3) VBUS (Note 3) All other pins (Note 3) Storage Temperature Range Operating Temperature Range Value 6 -0.5 to 4.6 50 15 50 14 5 2 -65 to + 150 -40 to + 85 Unit V V mA mA mA kV C C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional Operation under these conditions is not implied. Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
Table 7.
Symbol RthJA
Thermal data
Parameter Thermal Resistance Junction-Ambient Value 59 Unit C/W
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STUSB03E
Electrical characteristics
5
Table 8.
Symbol VBUS VIF VIL VIH VOL VOH IIL
Electrical characteristics
DC electrical characteristics (system and USB interface) (VIF = 3.6V, VBUS = 5V unless otherwise noted; TA = 25C, specifications over temperature, -40 to 85C)
Parameter USB Supply Voltage System I/F Supply Voltage Low Level Input Voltage (Note 4) High Level Input Voltage (Note 4) Low Level Output Voltage (Note 4) IOL = 20A High Level Output Voltage (Note 4) IOH = -20A Input Leakage Current (Note 4) D+, D- are idle, SUS = 1 D+, D- active, CLOAD = 25pF, SPD=1, f=6MHz, OE#=1 (Note 5) D+, D- active, CLOAD = 25pF, SPD=0, f=750kHz, OE#=1 (Note5) D+, D- active, CLOAD = 25pF, SPD=1, f=6MHz, OE#=0 (Note 5) D+, D- active, CLOAD = 25pF, SPD=0, f=750kHz, OE#=0 (Note 5) D+, D- are idle, VBUS = 5.25V Suspend Mode (SUS = 1), OE# = 1, SPD = 1 D+, D- are idle, VBUS = 5.25V SPD = 1, SUS = 0 D+, D- are idle, VBUS = 5.25V SPD = SUS = 0 D+, D- active, VBUS = 5.25V CLOAD = 50pF, SPD = 1, f = 6 MHz OE# = SUS = 0 (Note 5) D+, D- active, VBUS = 5.25V CLOAD = 50pF, f = 6 MHz, SUS = 0 OE# = SPD = 1 (Note 5) D+, D- active, VBUS = 5.25V CLOAD = 600pF, f = 750 KHz, SUS = SPD = 0 (Note 5) CON = 0, VPU = 0V VIF = 3.6V, VBUS = 0V ITERM = 200A, VBUS = 4 to 5.25V ITERM = 10mA, VBUS = 4 to 5.25V Supply present Supply lost 0.85VIF 0 VIF-100 -5 100 VIF 5 5 2 220 0.8 120 150 5 3.5 Test conditions Min. 4 1.6 Typ. Max. 5.5 3.6 0.15VIF Unit V V V V mV mV A A mA A mA A A mA mA
IIF
VIF Supply Current (Note 7)
IBUS
VBUS Supply Current
8 mA 6
3.5 -5 -5 3 6 4 5 5 3.6 11 3.6 A A V V
IVPULEAK VPU Leakage Current IVIFLEAK VIF Leakage Current VPU RSW Pull-Up Output Voltage VPU Internal Switch Resistance
VBUSDET VBUS Comparator threshold
Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Note 4. Specification applies to the following pins: SUS, SPD, RCV, CON, VP, VM, OE#, VBUSDET. Note 5. Characterized specification(s), but not production tested. Note 6. All AC parameters guaranteed by design but not production tested. Note 7. RCV NOT LOADED
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Electrical characteristics
STUSB03E
Table 9.
Symbol VBUS VIF VIL
DC electrical characteristics (system and USB interface) (VIF = 3.6V, VBUS = 5V unless otherwise noted; TA = 25C)
Parameter USB Supply Voltage System I/F Supply Voltage Test conditions Min. 4 1.6 Typ. Max. 5.5 3.6 0.15VIF Unit V V V V 0.1 V V 5 5 1.3 180 0.4 67 88 4.7 3 100 A A mA A mA A A mA mA
Low Level Input Voltage (Note 4) High Level Input Voltage 0.85VIF VIH (Note 4) Low Level Output Voltage IOL = 20A VOL (Note 4) High Level Output Voltage IOH = 20A VOH 0.9VIF (Note 4) IIL Input Leakage Current (Note 4) -5 D+, D- are idle, SUS = 1 D+, D- active, CLOAD = 25pF, SPD=1, f=6MHz, OE#=1 (Note 5) D+, D- active, CLOAD = 25pF, VIF Supply Current (Note 7) IIF SPD=0, f=750kHz, OE#=1 (Note5) D+, D- active, CLOAD = 25pF, SPD=1, f=6MHz, OE#=0 (Note 5) D+, D- active, CLOAD = 25pF, SPD=0, f=750kHz, OE#=0 (Note 5) D+, D- are idle, VBUS = 5.25V Suspend Mode (SUS = 1), OE# = 1, SPD = 1 D+, D- are idle, VBUS = 5.25V SPD = 1, SUS = 0 D+, D- are idle, VBUS = 5.25V SPD = SUS = 0 D+, D- active, VBUS = 5.25V IBUS VBUS Supply Current CLOAD = 50pF, SPD = 1, f = 6 MHz OE# = SUS = 0 (Note 5) D+, D- active, VBUS = 5.25V CLOAD = 50pF, f = 6 MHz, SUS = 0 OE# = SPD = 1 (Note 5) D+, D- active, VBUS = 5.25V CLOAD = 600pF, f = 750 KHz, SUS = SPD = 0 (Note 5) CON = 1, VPU = 0V IVPULEAK VPU Leakage Current -5 VIF = 3.6V, VBUS = 0V IVIFLEAK VIF Leakage Current -5 VPU ITERM = 200A, VBUS = 4 to 5.25V Pull-Up Output Voltage RSW VPU Internal Switch Resistance ITERM = 10mA, VBUS = 4 to 5.25V Supply present Supply lost 4 VBUSDET VBUS Comparator threshold
5.5 mA 5.2
3 5 5 3.3 9 3.6 A A V V
Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Note 4. Specification applies to the following pins: SUS, SPD, RCV, CON, VP, VM, OE#, VBUSDET. Note 5. Characterized specification(s), but not production tested. Note 6. All AC parameters guaranteed by design but not production tested. Note 7. RCV NOT LOADED
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STUSB03E
Table 10.
Symbol
Electrical characteristics
ESD performance
Parameter Test conditions Air Discharge (10 pulses) Contact Discharge (10 pulses) Air Discharge (10 pulses) Contact Discharge (10 pulses) Min. Typ. 8 6 5 5 Max. Unit
IEC-1000-4-2 (D+, D-) ESD IEC-1000-4-2 (VBUS only)
KV
Table 11.
DC electrical characteristics (transceiver) (VIF = 3.6V, VBUS = 5V unless otherwise noted; TA = 25C, specifications over temperature, -40 to 85C)
Parameter Test conditions VI = 0 to 3.3 V, SUS = 1 |(D+) - (D-)| Includes VDI range Low to high transition High to low transition VCM = 0.8 V RL = 1.5 K at 3.6V (see test circuit) RL = 15 K at GND (see test circuit) Pin to GND Steady state drive BUS idle Receive mode Min. -10 0.2 0.8 0.8 0.8 1.6 1.1 100 2.5 2.0 2.0 Typ. Max. 10 Unit A V V V V mV V V pF 24 1575 3090
Symbol ILO VDI VCM VSE
Hi-Z State Data Line Leakage (Suspend Mode) Differential Input Sensitivity Differential Common Mode Range Single Ended Receiver Threshold
VRHYS Receiver Hysteresis VOL VOH CI ZDRV Static Output Low Static Output High Transceiver Capacitance Driver Output Resistance
0 2.8 25 8 900 1425
0.3 3.6
RPU_D+ D+ Data line pull-up resistance
Table 12.
Symbol ILO VDI VCM VSE
DC electrical characteristics (transceiver) (VIF = 3.6V, VBUS = 5V unless otherwise noted; TA = 25C)
Parameter Test Conditions VI = 0 to 3.3 V, SUS = 1 |(D+) - (D-)| Includes VDI range Low to high transition High to low transition VCM = 0.8 V RL = 1.5 K at 3.6V (see Test circuits) RL = 15 K at GND (see Test circuits) Pin to GND Steady state drive BUS idle Receive mode Min. -2 0.2 0.8 0.8 0.8 1.6 1.1 50 2.5 2.0 2.0 Typ. Max. 2 Unit A V V V V mV V V pF
Hi-Z State Data Line Leakage (Suspend Mode) Differential Input Sensitivity Differential Common Mode Range Single Ended Receiver Threshold
VRHYS Receiver Hysteresis VOL VOH CI ZDRV Static Output Low Static Output High Transceiver Capacitance (3) Driver Output Resistance
0.3 2.8 25 16 1300 2200 3.6
RPU_D+ D+ Data line pull-up resistance
(3) Pins D+, D-
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Electrical characteristics
STUSB03E
Table 13.
Symbol TR TF TRFM VCRS TR TF TRFM VCRS tTA_OI tTA_IO tPZH, tPZL tPLZ, tPHZ
AC electrical characteristics (VIF = 3.6V, VBUS = 5V unless otherwise noted; TA = 25C.) (Note 6)
Parameter Test Conditions CL = 50pF (Figure 5) CL = 600pF CL = 50pF (Figure 5) CL = 600pF 80 1.3 4 4 90 1.3 75 300 125 2 20 20 111.11 2 5 5 Min. 75 300 Typ. Max. Unit ns ns % V ns ns % V ns ns ns ns 55 300 18 24 ns ns ns ns
Transition Rise Time (LOW SPEED) Transition Fall Time (LOW SPEED)
Rise/Fall Time Matching (LOW (TR, TF) SPEED) Output Signal Crossover Voltage (LOW SPEED) Transition Rise Time (FULL SPEED) CL = 50pF (Figure 5) Transition Fall Time (FULL SPEED) CL = 50pF (Figure 5) Rise/Fall Time Matching (FULL SPEED) Output Signal Crossover Voltage (FULL SPEED) Output to input turnaround time Output to input turnaround time Driver enable delay Driver disable delay (TR, TF)
Figure 4. Figure 4.
FS, Figure 3. FS, Figure 3. FS, CL = 50pF LS, CL =600pF
0 0 50 50
tPLH tPHL VP, VM to D+, D- Propagation Delay
tPLH tPHL D+, D- to RCV Propagation Delay FS, input slope = 15 ns tPLH tPHL D+, D- to VP, VM Propagation Delay FS, input slope = 15 ns
Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Note 4. Specification applies to the following pins: SUS, SPD, RCV, CON, RCV, VP, VM, OE#. Note 5. Characterized specification(s), but not production tested. Note 6. All AC parameters guaranteed by design but not production tested.
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STUSB03E
Timing diagram
6
Figure 3.
Timing diagram
Driver enable and disable delay
Figure 4.
Turnaround time
Figure 5.
Rise and fall times
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Timing diagram
STUSB03E
Figure 6.
Receiver propagation delay
Figure 7.
Driver propagation delay (CL = 50pF)
Minimum Timing LS and maximum timing FS
Figure 8.
FS eye diagram
12/20
STUSB03E
Test circuits
7
Figure 9.
Test circuits
Load for VP, VM, RCV
Figure 10. Load for D+, D-
Figure 11. Enable and disable time circuit
Switch = GND for tPZH and tPHZ; V = VTRM for tPZL and tPLZ
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Test circuits
STUSB03E
Figure 12. Functional diagram
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STUSB03E
Functional description
8
Functional description
The STUSB03E is designed to provide USB connectivity in mobile systems where available system supply voltages are not able to satisfy USB requirements. The STUSB03E can operate down to supply voltages of 1.6V and still meet USB physical layer specifications. As shown in the circuit above, the STUSB03E takes advantage of the USB supply voltage, VBUS, to operate the transceiver. The system voltage, VIF, is used to set the reference voltage used by the digital I/O lines interfacing to the system controller. Internal circuitry provides translation between the USB and system voltage domains. VIF will typically be the main supply voltage rail for the controller. In addition, a 3.3V, 10% termination supply voltage, VPU, is provided to support speed selection. VPU can be disabled or enabled under software control via the CON input. This allows for software-controlled connect or disconnect states. A 1.5K resistor is required to be connected between this pin and the D- line when operating in low speed mode. In full speed mode either an internal pull-up resistor or an external one connected between VPU pin and D+ line can be used; the desired configuration is chosen by tying RSEL pin to VIF or GND. The use of ESD transient protection devices is not required for operation, but is recommended.
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Package mechanical data
STUSB03E
9
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
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STUSB03E
Package mechanical data
QFN16 (3mmx3mm) MECHANICAL DATA
mm. DIM. MIN. A A1 A3 b D D2 E E2 e K L r 0.30 0.09 1.55 1.55 0.18 0.80 TYP 0.90 0.02 0.20 0.25 3.00 1.70 3.00 1.70 0.50 0.20 0.40 0.50 0.012 0.006 1.80 0.061 1.80 0.061 0.30 0.007 MAX. 1.00 0.05 MIN. 0.032 TYP. 0.035 0.001 0.008 0.010 0.118 0.067 0.118 0.067 0.020 0.008 0.016 0.020 0.071 0.071 0.012 MAX. 0.039 0.002 inch
E
A K A1
E2
e D b K r D2
A3
L
This drawing is not to scale
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Package mechanical data
STUSB03E
Tape & Reel QFNxx/DFNxx (3x3) MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 3.3 3.3 1.1 4 8 12.8 20.2 60 18.4 0.130 0.130 0.043 0.157 0.315 TYP MAX. 330 13.2 0.504 0.795 2.362 0.724 MIN. TYP. MAX. 12.992 0.519 inch
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STUSB03E
Revision history
10
Table 14.
Revision history
Revision history
Revision 1 2 First Release. Update tape & reel. Changes
Date 31-Oct-2006 14-Mar-2007
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STUSB03E
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