STF201-22 & STF201-30 USB Downstream Port Filter & TVS For EMI Filtering and ESD Protection PROTECTION PRODUCTSPROTECTION PRODUCTS Features Description The STF201 is a combination EMI filter and line termi- Bidirectional EMI/RFI filtering and line termination nation device with integrated TVS diodes for use on with integrated ESD protection downstream USB ports. It is constructed using a ESD protection for USB power (V ) and data lines BUS proprietary technology that allows passive components (D+ & D-) to IEC 61000-4-2 Level 4 and TVS diodes to be integrated in the same package. Filtering and termination for two USB data lines Each device will provide termination, filtering, and ESD Different series resistors for impedance matching protection for one downstream USB port. The STF201 Low TVS operating voltage (5.25V) is an easily implemented solution for meeting the Low leakage current requirements of revision 1.1 of the Universal Serial Bus Low capacitance specification. Solid-state technology USB line termination is achieved with series 22 or 30 resistors on both the D+ and D- USB lines. These Mechanical Characteristics resistors preserve signal integrity by matching the cable impedance to that of the differential driver. The 15k EIAJ SOT23-6L package pull-down resistors complete the termination circuit on Molding compound flammability rating: UL 94V-0 each line. They are required by the USB specification Marking : Marking Code to identify the line as a downstream connection. The Packaging : Tape and Reel per EIA 481 47pF capacitors are used to bypass high frequency energy to ground and for edge rate control of the USB Applications signals. Finally, the STF201 contains TVS diodes for ESD protection of both (D+ & D-) data lines and the USB Hubs voltage bus (V ). The TVS diodes provide effective BUS Portable electronics suppression of ESD voltages in excess of 15kV (air Printers discharge) and 8kV (contact discharge) per IEC 61000- Monitors 4-2, level 4. Servers, Desktop, and Notebook computers The small size and integrated feature of the STF201 minimizes required board space and increases system reliability. The pin-out of the device allows easy imple- mentation. The STF201 is suitable for use in USB hubs, computers, peripherals, and portable devices. Circuit Diagram Pin Configuration S0T23-6L (Top View) www.semtech.com Revision 08/11/04 1STF201-22 & STF201-30 PROTECTION PRODUCTS PROTECTION PRODUCTS Absolute Maximum Rating Rlating Seymbo Vsalu Unit SPteady-State Power 1W00 m pk ESD Air Discharge per IEC 61000-4-2 V 15 kV ESD ESD Contact Discharge per IEC 61000-4-2 8 LTead Soldering Temperature 2C60 (10 sec.) L OTperating Temperature -C40 to +125 J STtorage Temperature -C55 to +150 STG Electrical Characteristics STF201-xx PlarameterSsymboCmondition MlinimuTmypicaMsaximu Unit TVVS Reverse Stand-Off Voltage 5V.25 RWM TVVS Reverse Breakdown Voltage I=61mA V BR t TIVS Reverse Leakage Current V = 5.25V, T=25C 5A R RWM Between V pin and Ground BUS TIVS Reverse Leakage Current V = 3.3V, T=25C 1A R RWM Between any data (D+, D-) pin and Ground. TCVS Junction Capacitance Between I/O pins and Ground, 1F0 p j each device V = 0V, f = 1MHz R SReries Resistance (STF201-22) E0ach Line 22242 S SReries Resistance (STF201-30) E7ach Line 20333 S PRulldown Resistance E5ach Line 153. 151k6. PD CCapacitor E7ach Line 4Fp TCotal Capacitance Between Input or Output to 6F0 p TOT Ground V = 0V, f = 1MHz R www.semtech.com 2004 Semtech Corp. 2