STF202-22T1G USB Filter with ESD Protection This device is designed for applications requiring Line Termination, EMI Filtering and ESD Protection. It is intended for use in upstream USB ports, Cellular phones, Wireless equipment and computer applications. This device offers an integrated solution in a small package (TSOP−6, Case 318G) reducing PCB space and cost. CIRCUIT DESCRIPTION Features: • Provides USB Line Termination, Filtering and ESD Protection • Single IC Offers Cost Savings by Replacing 3 Resistors, • • • • • http://onsemi.com 2 Capacitors, and 5 TVs diodes Bi−directional EMI Filtering Prevents Noise from Entering/Leaving the System IEC61000−4−2 ESD Protection for USB Port Flexible Pull−down or Pull−up Line Termination to Meet USB 1.1 Low Speed and High Speed Specification ESD Ratings: Machine Model = C ESD Ratings: Human Body Model = 3B This is a Pb−Free Device Benefits: GND D(OUT) D(OUT) 6 5 4 C Rup 2 3 VBUS D(IN) D(IN) 6 Component Implementation TVs Devices Provide ESD Protection That is Better than a Discrete Implementation because the Small IC minimizes Parasitic Inductances 5 3 MARKING DIAGRAM 6 Symbol Value Unit PD 225 mW TJ(max) 125 °C Operating Temperature Range TJ −55 to +125 °C Storage Temperature Range Tstg −55 to +125 °C Lead Solder Temperature (10 second duration) TL 260 °C 5 4 S22 MG G MAXIMUM RATINGS (TA = 25°C) Maximum Junction Temperature 2 TSOP−6 CASE 318G STYLE 8 • USB Hubs • Computer Peripherals Using USB Steady State Power 4 1 Typical Applications: Rating Rs2 1 • TSOP−6 Package Minimizes PCB Space • Integrated Circuit Increases System Reliability versus Discrete • C Rs1 1 2 3 S22 = Specific Device Code M = Date Code G = Pb−Free Package (Note: Microdot may be in either location) ORDERING INFORMATION Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Device Package Shipping† STF202−22T1G TSOP−6 (Pb−Free) 3000/Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. © Semiconductor Components Industries, LLC, 2012 September, 2012 − Rev. 9 1 Publication Order Number: STF202−22T1/D STF202−22T1G ELECTRICAL CHARACTERISTICS (TA = 25°C) Device Device Marking VRWM (Volts) Min Max Max IR @ VRWM = 5.25 V VBUS to GND (mA) STF202−22T1G S22 5.25 6.0 8.0 5.0 VBR @ 1 mA (Volts) Max IR @ VRWM = 3.3 V I/O Pin (mA) Typical Line Capacitance (pF) (Notes 2, 3) Min Nom Max Min Nom Max 1.0 68 20 22 24 1.35 1.5 1.65 Series Resistor RS (W) (Note 1) Pull−up Resistor Rup (kW) 1. For other RS values (i.e. RS = 30 W) contact your local ON Semiconductor sales representative. 2. Measured at 25°C, VR = 0 V, f = 1 MHz, Pins 2, 3, 4 or 5 to GND with Pin 1 also grounded. 3. For other capacitance values contact your local ON Semiconductor sales representative. TYPICAL CHARACTERISTICS 10 50 0 40 −10 −20 30 P = −25 dBm Vdc = 0 V 20 10 (dB) (dB) −30 −40 0 −50 −10 −60 −20 −70 −30 −80 −40 −90 0.1 1 10 (MHz) 100 −50 1000 Figure 1. Analog Cross−talk (D+ to D−) 0.1 1 10 (MHz) 100 1000 Figure 2. Insertion Loss Characteristics 1540 22.2 RS− TARGET 1530 22.0 TARGET 1520 Rup (Ohms) 21.8 RS (Ohms) P = −25 dBm Vdc = 0 V 21.6 21.4 1510 1500 1490 1480 1470 21.2 1460 21.0 −30 −20 −10 0 10 20 30 40 50 TEMPERATURE (°C) 60 70 1450 −30 −20 −10 80 Figure 3. RS versus Temperature 0 10 20 30 40 50 TEMPERATURE (°C) 60 Figure 4. Rup versus Temperature http://onsemi.com 2 70 80 STF202−22T1G APPLICATIONS BACKGROUND What Is USB? The USB is not a serial port, it is a serial bus, a fact that enables a single port on the computer to be a link for a myriad of devices, (up to 127 devices in a USB system). We can easily chain one device to another and use one port as a connecting point of many devices by using a hub. All these enables us to look at the USB system as a small network of devices. The Universal Serial Bus (USB) makes connecting devices to your computer faster, easier and virtually limitless. High−Speed USB devices are capable of communicating at speeds up to 12 megabits without shutting down and without having to open your computer. MONITOR TELEPHONE COMPUTER PC CPU PLOTTER KEYBOARD MOUSE SCANNER HUB PRINTER Figure 5. Typical USB System or more USB functions. Most of the devices provide only one function but there may be some, which provides more than one and called compound devices. We refer to two kinds of devices − self powered or bus powered devices. A device that gets its power from the bus is called bus powered and on the other hand a device which supplies its own power is called self powered. There are two kinds of devices: Full−speed devices − operates in 12 Mb/s Low−speed devices that work in 1.5 Mb/s STF202 Device Information The Universal Serial Bus (USB) specification revision 1.1 requires EMI Filtering and line termination for the USB I/O lines. The STF202 device from ON Semiconductor provides upstream termination, EMI Filtering and ESD Protection to IEC61000−4−2 (Level 4) in an integrated solution placed in a small and single package (TSOP−6, Case 318G). The equivalent circuit of this device is shown in the Figure 6. Typically the USB system consists of one host, hubs and devices. The Host in the USB system, is responsible to the whole complexity of the protocol (simplifies the designing of USB devices). The host controls the media access, therefore, no one can access the bus unless it got an approval required from the host. The Hub provides an interconnect point, which enables many devices to connect to a single USB port. The logical topology of the USB is a star structure, all the devices are connected (logically) directly to the host. It is totally transparent to the device what is its hub tier (the number of hubs the data has to flow through). The hub is connected to the USB host in the upstream direction (data flows “up” to the host) and is connected to the USB device in the downstream direction (data flows “down” from the host to the device). The hub’s main functionality is the responsibility of detecting an attachment and detachment of devices, handling the power management for devices that are bus−powered (get power from the bus), and responsibility for bus error detection and recovery. Another important role of the hub is to manage both full and low speed devices. When a device is attached to the system the hub detects the speed, which the device operates in, and through the whole communication on the bus prevents from full speed traffic to reach low speed device and vice versa − prevent from low speed traffic to reach full speed device. The Device is defined as everything in the USB system, which is not a host (including hubs). A device provides one D Rpu RS1 C GROUND D RS2 Figure 6. http://onsemi.com 3 C STF202−22T1G 5V As previously mentioned, there are two types of configurations for the USB port which are upstream and downstream. If your port connects to the host either in a direct way or through a hub, you are upstream (data flows “up” to the host) and in the other hand, if you are the host or your port provides access to the host then you are downstream (data flows “down” from the host to the device). In the case of the STF202 device, it provides upstream termination. The Figure 7 represents the termination for an upstream USB port. Peripheral 1 D+ 3 STF202 5 D− 4 D+ Figure 8. Low−Speed Devices The Pull up resistor (Rpu) is connected to the D− Line. The terminal 1 is connected to the Voltage Supply Line (VBUS) while the terminal 6 is connected to ground. The input of the D− line is connected in the terminal 3 which outputs from the terminal 4. Finally, the input of the D+ line is connected in the terminal 2 which outputs from the terminal 5. The Figure 9 shows the connections of the STF202 device for “Low−Speed devices”. Rpu C 2 USB Controller GND VCC C D− 6 RS RS 5V Peripheral 1 6 USB Controller D+ 2 STF202 5 D+ D− 3 4 D− Figure 7. The USB Line termination is reached through the series resistors placed in the D+ and D− lines. These resistors insure the proper termination to maintain the integrity of the signal. The Pull up Resistor of 1.5 kW on either the D+ or D− data lines is used to identify the equipment as either full−speed or low−speed device. GND Figure 9. Connection for Full−Speed and Low−Speed Devices As mentioned before, there are two kinds of port devices: Full−Speed devices − operates in 12 Mb/s Low−Speed devices that work in 1.5 Mb/s The STF202 device can be shaped to be used for either Full−Speed or Low−Speed devices which is achieved as described below: Full−Speed Devices The Pull up resistor (Rpu) is connected to the D+ Line. The terminal 1 is connected to the Voltage Supply Line (VBUS) while the terminal 6 is connected to ground. The input of the D+ line is connected in the terminal 3 which outputs from the terminal 4. Finally, the input of the D− line is connected in the terminal 2 which outputs from the terminal 5. The Figure 8 shows the connections of the STF202 device for “Full−Speed devices”. http://onsemi.com 4 STF202−22T1G addition to the Line termination and EMI Filtering, it is also needed to protect the USB I/O Lines against ESD conditions, so TVS devices must be added for these purposes. The Figure 10 describes in a simplified way what the USB port components are. As shown in this diagram, there are signals for upstream and downstream ports which must be provided with Line Termination and EMI Filtering to meet the requirements of the USB specification revision 1.1. In CLK CRISTAL To Upstream Ports XTAL1 VCC XTAL2 GND REGULATOR DPO DP1−DP4 D+ DMO DM1−DM4 D− OC1−OC4 VBUS POWER SWITCHING PWR1−PWR4 USB Data Lines and Power to Downstream Ports GND Figure 10. As mentioned before, the ON Semiconductor STF202 device provides “upstream termination”, EMI Filtering and ESD Protection to IEC61000−4−2 in an integrated solution placed in a small and single package (TSOP−6, Case 318G). The typical application for the STF202 device is shown in the Figure 11. VBUS VBUS D+ D− DOWNSTREAM TERMINATION D+ D− D1D+ D1D− TVS 6 5 4 STF202 GND 1 POWER SWITCH OC OC PWR PWR VBUS D+ D− GND 2 3 DOD+ DOD− REGULATOR DOWNSTREAM TERMINATION D2D+ D2D− TVS USB CONTROLLER Figure 11. http://onsemi.com 5 GND STF202−22T1G PACKAGE DIMENSIONS TSOP−6 CASE 318G−02 ISSUE V D ÉÉ ÉÉ 6 E1 1 NOTE 5 5 2 H L2 4 GAUGE PLANE E 3 L b C DETAIL Z e 0.05 M NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH. MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 4. DIMENSIONS D AND E1 DO NOT INCLUDE MOLD FLASH, PROTRUSIONS, OR GATE BURRS. MOLD FLASH, PROTRUSIONS, OR GATE BURRS SHALL NOT EXCEED 0.15 PER SIDE. DIMENSIONS D AND E1 ARE DETERMINED AT DATUM H. 5. PIN ONE INDICATOR MUST BE LOCATED IN THE INDICATED ZONE. SEATING PLANE DIM A A1 b c D E E1 e L L2 M c A A1 DETAIL Z MIN 0.90 0.01 0.25 0.10 2.90 2.50 1.30 0.85 0.20 0° MILLIMETERS NOM MAX 1.00 1.10 0.06 0.10 0.38 0.50 0.18 0.26 3.00 3.10 2.75 3.00 1.50 1.70 0.95 1.05 0.40 0.60 0.25 BSC 10° − STYLE 8: PIN 1. 2. 3. 4. 5. 6. Vbus D(in)D(in)+ D(out)+ D(out)GND RECOMMENDED SOLDERING FOOTPRINT* 6X 0.60 6X 3.20 0.95 0.95 PITCH DIMENSIONS: MILLIMETERS *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: [email protected] N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5817−1050 http://onsemi.com 6 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative STF202−22T1/D