STF202-22 SEMTECH | Alldatasheet

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Technical content

© 2000 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 Objective - March 03, 2000 USB Upstream Port Filter & TVS For EMI Filtering and ESD Protection STF202-22 STF202-30 SCHEMATIC & PIN CONFIGURATION

FEATURES

  • Bidirectional EMI/RFI filtering and line termination with integrated ESD protection
  • ESD protection for USB power (VBUS) and data lines (D+ & D-) to IEC 1000-4-2 Level 4
  • Filtering and termination for two USB data lines
  • Different series resistors for impedance matching
  • Low TVS operating voltage (5.25V)
  • Low leakage current
  • Small SOT-23 6L package
  • Solid-state technology MECHANICAL CHARACTERISTICS
  • EIAJ SOT-23 6L package
  • Molding compound flammability rating: UL 94V-0
  • Marking : Marking Code
  • Packaging : Tape and Reel per EIA 481

APPLICATIONS

  • Portable electronics
  • Cellular Handsets
  • Peripherals
  • Servers, Desktop, Notebook, and Handheld Computers

DESCRIPTION

The STF202 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 STF202 is an easily implemented solution for meeting the requirements of revision 1.1 of the Universal Serial Bus specification. USB line termination is achieved with series 22Ω 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 1.5kΩ pull-up resistor completes the termination circuit on each line. This 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 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 contains TVS diodes for ESD protection of both (D+ & 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 1000-4-2, 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. TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.Semtech.com Part Number Series Resistor Qty per Reel Reel Size STF202-22.TC 22 Ω 3,000 7” STF202-30.TC 30 Ω 3,000 7”

ORDERING INFORMATION

SOT-23 6L (Top View) COMPONENT VALUES Series Resistor (RS) Pull Up Resistor (RPU) Termination Capacitor (C) STF202-22 22 Ω 1.5kΩ 47 STF202-30 30 Ω 1.5kΩ 47 Tolerance ±10% ±10% ±20%

© 2000 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 Objective - March 03, 2000 USB Upstream Port Filter & TVS For EMI Filtering and ESD Protection STF202-22 STF202-30 MAXIMUM RATINGS Rating Symbol Value Unit Steady-State Power P 100 mW ESD Air Discharge per IEC 1000-4-2 V PP 16 kV ESD Contact Discharge per IEC 1000-4-2 V PP 10 kV Lead Soldering Temperature (10 seconds) T L 260 °C Operating Temperature T stg -40 to +125 °C Storage Temperature T j -55 to +150 °C ELECTRICAL CHARACTERISTICS (T = 25ºC Unless Otherwise Noted) STF202-xx Parameter Symbol Conditions Minimum Nominal Maximum Units TVS Reverse Stand-Off Voltage V RWM 5.25 V TVS Reverse Breakdown Voltage V BR It = 1mA 6 V TVS Reverse Leakage Current I R VRWM = 5.25V, T=25°C Between VBUS pin and ground 5µ A TVS Reverse Leakage Current I R VRWM = 3.3V, T=25°C Between any data (D+, D-) pin and ground 1µ A Total TVS Junction Capacitance C j Between I/O pins and Gnd, each device VR = 0V, f = 1MHz 10 pF Series Resistor (STF202-22) RS Each Line 20 22 24 Ω Series Resistor (STF202-30) RS Each Line 27 30 33 Ω Pull Up Resistor R UP Each Line 1.35 1.5 1.65 kΩ Capacitor C Each Line 47 pF Total Capacitance C TOT Between I/O pins and Gnd, each line VR = 0V, f = 1MHz 60 pF Part Number Marking Code STF202-22 222 STF202-30 230 MARKING CODES

© 2000 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 Objective - March 03, 2000 USB Upstream Port Filter & TVS For EMI Filtering and ESD Protection STF202-22 STF202-30 TYPICAL CHARACTERISTICS ESD Clamping (15kV Air)ESD Clamping (8kV Contact) Insertion Loss Characteristics Analog Crosstalk (D+ to D-) 0.030MHz 2.0GHz 0 dB -10 dB -20 dB

0.030 MHz 1 GHz

-20 dB -60 dB

© 2000 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 Objective - March 03, 2000 USB Upstream Port Filter & TVS For EMI Filtering and ESD Protection STF202-22 STF202-30 LAND PATTERN SOT23-6L OUTLINE DRAWING SOT23-6L