STF202-22_04 SEMTECH | Alldatasheet
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Technical content
1 www.semtech.com PROTECTION PRODUCTS STF202-22 and STF202-30 USB Upstream Port Filter and TVS For EMI Filtering and ESD Protection Description Features Schematic and PIN Configuration Revision 08/11/04 The STF202 is a combination EMI filter and line termi- nation device with integrated TVS diodes for use on upstream USB ports. It is constructed using a propri- etary 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 STF202 is an easily implemented solution for meeting the require- ments of revision 1.1 of the Universal Serial Bus specification. USB line termination is achieved with series 22 Ω or 30Ω resistors on both the D+ and D- USB lines. These resistors preserve signal integrity by matching the cable impedance to that of the differential driver. The 1.5k Ω pull-up resistor completes the termination circuit on each line. This resistor is required by the USB specifi- cation to identify the equipment as either a full-speed (connected to D+ line) or low-speed (connected to D- line) device. The 47pF capacitors are used to bypass high frequency energy to ground and for edge rate control of the USB signals. Finally, the STF202 con- tains TVS diodes for ESD protection of both (D+ and D-) data lines and the voltage bus (V BUS). The TVS diodes provide effective suppression of ESD voltages in excess of ±15kV (air discharge) and ±8kV (contact discharge) per IEC 61000-4-2, level 4. The small size and integrated feature of the STF202 minimizes required board space and increases system reliability. The STF202 is suitable for use in USB hubs, computers, peripherals, and portable devices.
Applications
Mechanical Characteristics USB Hubs Portable electronics Cellular Handsets Modems Peripherals Servers, Desktop, Notebook, and Handheld Computers Bidirectional EMI/RFI filtering and line termination with integrated ESD protection ESD protection for USB power (V BUS) 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 two USB data lines Different series resistors for impedance matching Low TVS operating voltage (5.25V) Low leakage current Low capacitance Solid-state technology EIAJ SOT23 6L package Molding compound flammability rating: UL 94V-0 Marking : Marking Code Packaging : Tape and Reel per EIA 481 S0T23-6L (Top View) Circuit Diagram
2 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS STF202-22 and STF202-30 Absolute Maximum Rating
Electrical Characteristics
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3 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS STF202-22 and STF202-30 Typical Characteristics ESD Clamping (8kV Contact) ESD Clamping (15kV Air) Typical Insertion Loss 0.030MHz 2.0GHz 0 dB -10 dB -20 dB Analog Crosstalk (D+ to D-)
0.030 MHz 1 GHz
-20 dB -60 dB
6 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS STF202-22 and STF202-30 Outline Drawing - SOT23 6L Land Pattern -SOT23 6L .110 BSC .037 BSC DETAIL aaa C SEATING ccc C 2X N/2 TIPS 2X E/2 SEE DETAIL AA2 bxN A .008 N E .060 .114 .063 .118 .010 - A 0.20 1.60 3.00
2.80 BSC
0.95 BSC
.069 1.50 2.90 .020 0.25 1.75 0.50- EI L (L1) c 0.25 PLANE GAGE H 2.80.110 bbb C A-B D .008 .004 .012 .003 (.024) .018 .035 .000 .035 .045 0.10 0.20 10° 0° - 10° 1.15 (0.60) 0.45.024 .009 0.30 0.08 .057 .051 .006 0.00 .90 0.90 0.22 0.60 0.15 1.45 1.30 1.90 BSC.075 BSC A e1 D e B C H NOM INCHES DIMENSIONS aaa bbb ccc N DIM c e L E D b A MIN MILLIMETERS MAX MIN NOM MAX PLANE D DATUMS AND TO BE DETERMINED AT DATUM PLANE CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS3. OR GATE BURRS. NOTES: 2. -A- -B- -H- SIDE VIEW THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. NOTES: DIMENSIONS INCHES Y Z DIM G P X C MILLIMETERS .043 .141 .055 (.098) .037 .024 1.40 (2.50) 0.95 0.60 1.10 3.60 DIMENSIONS INCHES Y Z DIM G P X C MILLIMETERS P (C) Z Y G X
7 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS STF202-22 and STF202-30 Contact Information Semtech Corporation Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804 Marking Codes
Ordering Information
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