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| TVS Diode Arrays Upstream USB Port Terminator with ESD Suppression & EMI Filtering SPUSB1 Series The Littelfuse SPUSB1 Series is a multifunctional USB port protection network designed to provide ESD protection, EMI/RFI filtering and line termination for a single USB 1.1 port. The SPUSB1 can replace a minimum of ten typically larger "discrete" devices resulting in inventory and placement cost savings. The SPUSB1 Series combines Transient Voltage Suppression (TVS) avalanche diodes, EMI/RFI filtering components (R1 and C1), and a1.5k termination resistor (R2). The filtering components are included to satisfy recommendations in the USB 1.1 specification, and the 1.5k resistor (R2) is included as a pull-up resistor to VBUS. The SPUSB1 Series can be used for termination and protection of"upstream" USB devices such as PDAs, digital cameras, scanners and hubs which are often at risk from transient voltage surges and electromagnetic interference from both internal and external sources. To support a wide range of circuit conditions, Littelfuse offers three resistance values for the series resistor (R1). The series resistance plus the USB driver output resistance must be close to the USB cable's characteristic impedance of 45 (90 balanced) to minimize transmission line reflections. Features Circuit Diagram SC70-6 1 R1 6 * Compact SC70 package saves board space and lowers manufacturing costs compared to discrete solutions * ESD protection to 30kV contact discharge per MIL-STD- 883D, method 3015 * ESD protection to 15kV contact discharge per IEC 61000-4-2 international standard 5 VBUS C1 C1 R2 2 GND Applications * Desktop/Laptop PCs * USB peripherals (printers, scanners, zip drives) * PDAs / wireless handsets * Digital cameras * MP3 Players * Cable Modems 3 R1 4 Ordering Information PART NUMBER SPUSB1AJT SPUSB1BJT SPUSB1CJT R1 (Ohm) 12 22 33 R2 (KOhm) 1.5 1.5 1.5 C1 (pF) 47 47 47 DEVICE BRAND UFA UFB UFC PKG TYPE SC70-6 SC70-6 SC70-6 #/REEL 3000 3000 3000 w w w. l i t t e l f u s e . c o m 217 TVS DIODE ARRAYS * One upstream USB port terminator, EMI filter and transient overvoltage protector in a single surface-mount package 5 TVS Diode Arrays Upstream USB Port Terminator with ESD Suppression & EMI Filtering SPUSB1 Series Absolute Maximum Ratings Parameter Supply Voltage VBUS DC Power per Resistor Package Power Temperature Range: Operating Storage Rating 5.5 100 200 -40 to +85 -65 to +150 Unit V mW mW C Standard Parameter Resistance R1 (SPUSB1AJT only) Resistance R1 (SPUSB1CJT only) Resistance R1 (SPUSB1BJT only) Resistance R2 Capacitance C1 @ 2.5 v DC, 1MHz Diode Leakage at 3.3V Specifications (at 25C unless specified otherwise) MIN 6% 26% 18% 1.2% 38% TYP 12 33 22 1.5 47 1 5.5 5.6 -1.2 30 15 25 Positive Negative 10 -5 6.8 -0.8 8.0 -0.4 MAX 14% 40% 26% 18% 56% 100 Unit k pF nA V V V kV kV kV V V Diode Reverse Bias Stand-off Voltage, 1= 10A Signal Clamp Voltage: Positive Clamp, 10mA Negative Clamp, 10mA In-system ESD Withstand Voltage(1) Human Body Model (MIL-STD-883D, method 3015 IEC 81000-4-2, contact discharge method (I/O pins) IEC 81000-4-2, contact discharge method (VBUS pin) Clamping Voltage During ESD Discharge(1) MIL-STD-883D (Method 3015), 8kV Note: (1) ESD applied to input/outputVDD pins with respect to GND, one at a time. Clamping Voltage is measured at the opposite side of the EMI filter to the ESD pin (ie: if ESD is applied to pin1 then clamping voltage is measured at pin 6). Unused pins are open. These parameters guaranteed by design. APPLICATIONS INFORMATION 1 D+ D1 USB 1.1 CONTROLLER IC GND GND C1 C1 R2 3.3V 2 5 VBUS USB 1.1 CONNECTOR D4 USB 1.1 CONTROLLER IC GND GND C1 R1 6 D+ 1 DD1 C1 R2 3.3V 2 5 VBUS USB 1.1 CONNECTOR D4 R1 6 D- 3 DD2 R1 4 DD3 D+ 3 D2 R1 4 D+ D3 Figure 1. Full-Speed Devices (12Mbits per second) For full speed operation the pull-up resistor R2 is connected to the D+ pin. Figure 2. Low-Speed Devices (1.5Mbits per second) Low speed connection requires the pull-up resistor R2 to be connected to the Dpin. Please note the reversal of the D- and D+ pins on Figure 2 versus Figure 1. 218 w w w. l i t t e l f u s e . c o m TVS Diode Arrays Upstream USB Port Terminator with ESD Suppression & EMI Filtering SPUSB1 Series PACKAGING INFORMATION Mechanical Specifications Lead Plating Lead Material Lead Coplanarity Subsitute Material Body Material Flammability Tin-Lead Copper Alloy 0.004 inches (0.102mm) Silicon Molded Epoxy UL94-V-0 Outline Drawings B 6 5 B 4 Package SC70-6 6 MO-203 Issue A mm min max 1.10 0.10 1.00 0.30 0.25 2.25 1.35 inches min 0.031 0.000 0.028 0.006 0.003 0.073 0.045 max 0.043 0.004 0.039 0.012 0.010 0.089 0.053 JEDEC E HE Recommended Pad Layout O (REF) A A1 A2 0.80 0.00 0.70 0.15 0.08 1.85 1.15 1 B 2 3 R B c + + + D T P + D E A2 A M (REF) e HE 0.65 BSC 2.00 0.26 2.40 0.46 1.60 1.30 0.65 0.70 0.35 0.90 2.50 0.2W 1000 pcs 3,000 pcs 0.026 BSC 0.079 0.010 0.094 0.018 0.063 0.052 0.026 0.058 0.014 0.035 0.098 A1 S (REF) + + + L M c N N (REF) O P R S T PD@70C # / bag # / tape & reel L *See device brand for marking information. w w w. l i t t e l f u s e . c o m 219 TVS DIODE ARRAYS SPUSB1AJT - SC70-6 SPUSB1BJT - SC70-6 SPUSB1CJT - SC70-6 Pins 5 |
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