SEMTECH STF203-15

STF203-15 THRU STF203-33
USB Upstream Port Filter and TVS
For EMI Filtering and ESD Protection
PROTECTION PRODUCTS
Description
Features
The STF203 is a combination EMI filter and line
termination device with integrated TVS diodes for use
on upstream USB ports. It is constructed using a
proprietary technology that allows passive components
and TVS diodes to be integrated in the same package.
Each device will provide termination, filtering, and ESD
protection for one upstream USB port. The STF203 is
an easily implemented solution for meeting the
requirements of revision 1.1 of the Universal Serial Bus
specification.
Line termination is achieved with series resistors on
both the D+ and D- USB lines. The value of series
resistance added to the output impedance of the USB
driver must be as close to possible to the 45Ω
characteristic impedance of the cable (90Ω balanced)
to minimize transmission line reflections. They are
available with resistor values of 15Ω (STF203-15),
22Ω (STF203-22), and 33Ω (STF203-33). The 1.5kΩ
pull-up resistor is required by the USB specification to
identify the equipment as either a full-speed
(connected to D+ line) or low-speed (connected to Dline) device. The 47pF capacitors are required to
bypass high frequency energy to ground and to control
the edge rate of the USB signals. The TVS diodes
provide ESD protection of both (D+ and D-) data lines
and the voltage bus (VBUS). The TVS diodes on the
input/output pins provide suppression of ESD voltages
in excess of ±15kV (air discharge) and ±8kV (contact
discharge) per IEC 61000-4-2, level 4. The TVS diode
on the VBUS pin will suppress ESD discharges in excess
of 25kV per IEC 61000-4-2.
‹ Bidirectional EMI/RFI filtering and line termination
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with integrated ESD protection
ESD protection for USB power (VBUS) and data lines
(D+ and D-) to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Filtering and termination for one USB port
Series resistors: 15Ω, 22Ω, and 33Ω
Low TVS operating voltage (5.25V)
Low leakage current
Small SC70-6L package
Solid-state technology
Mechanical Characteristics
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EIAJ SC70-6L package
RoHS/WEEE Compliant
Molding compound flammability rating: UL 94V-0
Marking : Marking Code
Packaging : Tape and Reel per EIA 481
Applications
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Circuit Diagram
USB Ports
Cellular Handsets
PDAs
Pagers
Digital Cameras
PC Peripherals
MP3 Players
Schematic and PIN Configuration
6
1
D In/Out
D In/Out
D In/Out
D In/Out
.
2
5
4
3
SC70-6L (Top View)
Revision 03/22/2006
1
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STF203-15 THRU STF203-33
PROTECTION PRODUCTS
Absolute Maximum Rating
R ating
Symbol
Value
Units
Steady-State Power
PSS
100
mW
ESD Air Discharge per IEC 61000-4-2
ESD Contact Discharge per IEC 61000-4-2
VESD
16
10
kV
Lead Soldering Temperature
TL
260 (10 sec.)
°C
Operating Temperature
TJ
-40 to +125
°C
TSTG
-55 to +150
°C
Typical
Maximum
Units
5.25
V
Storage Temperature
Electrical Characteristics
STF203-XX
Parameter
Symbol
Conditions
Minimum
T VS Reverse Stand-Off Voltage
VRWM
T VS Reverse Breakdown Voltage
V BR
It = 1mA
T VS Reverse Leakage Current
IR
VRWM= 5.25V, T=25 °C
Between and data
(D+, D-) p in and Ground
5
µA
T VS Reverse Leakage Current
IR
Each Line
1
µA
Series Resistance (STF203-15)
RS
Each Line
13.5
15
16.5
Ohms
Series Resistance (STF203-22)
RS
Each Line
20
22
24
Ohms
Series Resistance (STF203-33)
RS
Each Line
30
33
36
Ohms
Pull Up Resistance
R PU
1.35
1.5
1.65
kOhms
Cap acitor
Total Cap acitance
 2006 Semtech Corp.
6
V
C
Each Line
47
pF
CTOT
Between Inp ut or
Outp ut or Ground
VR = 0V, f = 1MHz
60
pF
2
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STF203-15 THRU STF203-33
PROTECTION PRODUCTS
Typical Characteristics
CH1 S21
ESD Clamping (8kV Contact)
ESD Clamping (15kV Air)
Typical Insertion Loss
Analog Crosstalk (D+ to D-)
LOG
3 dB / REF 0 dB
CH1
1: -20.394 dB
800 MHz
S 21
log MAG
20 dB/
REF 0 dB
PRm
2: -15.035 dB
1.8 GHz
0 dB
3: -14.781 dB
2.5 GHz
-3 dB
-6 dB
-9 dB
-12 dB
3
-15 dB
2
-18 dB
-21 dB
-24 dB
1
1
MHz
START. 030 MHz
 2006 Semtech Corp.
10
MHz
100
MHz
1
3
GHz GHz
START
.030 000 MHz
STOP 3 000.000 000 MHz
STOP 3000. 000000 MHz
3
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STF203-15 THRU STF203-33
PROTECTION PRODUCTS
Applications Information
Figure 1 - Preferred Connection Diagram
(Full Speed Devices)
Device Connection
The STF203 is designed to provide termination, EMI
filtering and ESD protection for one USB port. The
device is connected as follows:
From Connector
1
1 . Full-Speed Devices: For full-speed devices the
pull-up resistor is connected to the D+ line. Route
the D+ line from the connector to pin 1 of the
STF203. Pin 6 is connected to the D+ line of the
IC. Route the D- line from the connector to pin 3.
Pin 4 is connected to the D- line of the IC. Pin 5 is
connected to the voltage supply line (VBUS). Pin 2 is
connected to ground. Note that the input and
output connections may be reversed if necessary
(See Figure 3).
STF203
6
2
5
3
4
Figure 2 - Preferred Connection Diagram
(Low Speed Devices)
From Connector
2 . Low-Speed Devices:: For low speed devices the
pull-up resistor is connected to the D- line. Route
the D- line from the connector to pin 1 of the
STF203. Pin 6 is connected to the D- line of the IC.
Route the D+ line from the connector to pin 3. Pin
4 is connected to the D+ line of the IC. Pin 5 is
connected to the voltage supply line (VBUS). Pin 2 is
connected to ground. Note that the input and
output connections may be reversed if necessary
(See Figure 4).
1
STF203
6
2
5
3
4
Figure 3 - Alternate Connection Diagram
(Full Speed Devices)
From Connector
USB Port Design Considerations
The Universal Serial Bus (USB) specification requires
termination and filtering components for proper operation. In addition, an open USB socket is vulnerable to
hazardous ESD discharges in excess of 15kV. These
discharges can occur on the data lines or the voltage
bus. The STF203 is an easily implemented solution
that is designed to meet the termination and EMI filter
requirements of the USB specification revision 1.1. It
also provides ESD protection to IEC 61000-4-2,
level 4.
USB line termination is achieved with series resistors
on both the D+ and D- lines. These resistors preserve
signal integrity by matching the cable impedance to
that of the differential driver. A 1.5kΩ pull-up resistor
is used to identify an upstream port on either the D+
(full speed devices) or the D- (low speed devices) data
line. Capacitors are used for EMI suppression. TVS
diodes provide ESD protection of both (D+ and D-)
data lines and the voltage bus (VBUS). The STF203
integrates all of these components in a small SC-70
package. This integrated solution simplifies design and
requires minimal board space.
 2006 Semtech Corp.
1
STF203
6
2
5
3
4
Figure 4 - Alternate Connection Diagram
(Low Speed Devices)
From Connector
1
4
STF203
6
2
5
3
4
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STF203-15 THRU STF203-33
PROTECTION PRODUCTS
Outline Drawing - SC70 6L
A
e1
D
DIM
N
2X E/2
ccc C
2X N/2 TIPS
1
SEE DETAIL
E
EI
2
e
H
B
c
GAGE
PLANE
D
0.15
aaa C
SEATING
PLANE
L
01
(L1)
A2 A
DETAIL
C
A
SIDE VIEW
A
A1
A2
b
c
D
E1
E
e
e1
L
L1
N
01
aaa
bbb
ccc
DIMENSIONS
INCHES
MILLIMETERS
MIN NOM MAX MIN NOM MAX
.043
.000
.004
.028 .035 .039
.006
.012
.003
.009
.075 .079 .083
.045 .049 .053
.083 BSC
.026 BSC
.051
.010 .014 .018
(.017)
6
0°
8°
.004
.004
.012
1.10
0.10
0.00
0.70 0.90 1.00
0.15
0.30
0.22
0.08
1.90 2.00 2.10
1.15 1.25 1.35
2.10 BSC
0.65 BSC
1.30 BSC
0.26 0.36 0.46
(0.42)
6
0°
8°
0.10
0.10
0.30
A
A1
bxN
bbb
C A-B D
NOTES:
1.
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
4. REFERENCE JEDEC STD MO-203, VARIATION AB.
Land Pattern - SC70 6L
X
DIM
C
G
C
G
P
X
Y
Z
Z
Y
DIMENSIONS
INCHES
MILLIMETERS
(.073)
.039
.026
.016
.033
.106
(1.85)
1.00
0.65
0.40
0.85
2.70
P
NOTES:
1.
 2006 Semtech Corp.
THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
5
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STF203-15 THRU STF203-33
PROTECTION PRODUCTS
Marking
Ordering Information
Part Number
Series
R esistor
Marking
Code
Part Number
Lead Finish
Qty per
Reel
R eel Size
STF203-15
15 Ω
315
STF203-15.TC
SnPb
3,000
7”
STF203-22
22 Ω
322
STF203-22.TC
SnPb
3,000
7”
STF203-33
33 Ω
333
STF203-33.TC
SnPb
3,000
7”
STF203-15.TCT
Pb free
3,000
7”
STF203-22.TCT
Pb free
3,000
7”
STF203-33.TCT
Pb free
3,000
7”
6
5
4
XXX
Note: Pb free finish is matte tin
1
2
3
Note: XXX = Marking Code
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
 2006 Semtech Corp.
6
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