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 a1.5kΩ termination resistor (R2). The filtering components are included to satisfy recommendations in the USB 1.1 specification, and the 1.5kΩ 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 45Ω (90Ω balanced) to minimize transmission line reflections. Features 5 Circuit Diagram • Compact SC70 package saves board space and lowers manufacturing costs compared to discrete solutions SC70-6 R1 1 • ESD protection to 30kV contact discharge per MIL-STD- 883D, method 3015 6 • ESD protection to 15kV contact discharge per IEC 61000-4-2 international standard R2 C1 2 5 GND Applications VBUS C1 • Desktop/Laptop PCs R1 3 TVS DIODE ARRAYS • One upstream USB port terminator, EMI filter and transient overvoltage protector in a single surface-mount package • USB peripherals (printers, scanners, zip drives) 4 • PDAs / wireless handsets • Digital cameras • MP3 Players • Cable Modems Ordering Information R1 (Ohm) R2 (KOhm) C1 (pF) DEVICE BRAND PKG TYPE #/REEL SPUSB1AJT 12 1.5 47 UFA SC70-6 3000 SPUSB1BJT 22 1.5 47 UFB SC70-6 3000 SPUSB1CJT 33 1.5 47 UFC SC70-6 3000 PART NUMBER w w w. l i t t e l f u s e . c o m 217 TVS Diode Arrays Upstream USB Port Terminator with ESD Suppression & EMI Filtering SPUSB1 Series Absolute Maximum Ratings Rating Parameter Unit Supply Voltage VBUS 5.5 V DC Power per Resistor 100 mW Package Power 200 mW -40 to +85 -65 to +150 °C Temperature Range: Operating Storage Specifications (at 25°C unless specified otherwise) Standard MIN Parameter TYP MAX Unit Resistance R1 (SPUSB1AJT only) 6% 12 14% Ω Resistance R1 (SPUSB1CJT only) 26% 33 40% Ω Resistance R1 (SPUSB1BJT only) 18% 22 26% Ω Resistance R2 1.2% 1.5 18% kΩ Capacitance C1 @ 2.5 v DC, 1MHz 38% 47 56% pF 1 100 nA Diode Leakage at 3.3V Diode Reverse Bias Stand-off Voltage, 1= 10µA 5.5 Signal Clamp Voltage: Positive Clamp, 10mA Negative Clamp, 10mA 5.6 -1.2 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) ±30 ±15 ±25 Clamping Voltage During ESD Discharge(1) MIL-STD-883D (Method 3015), 8kV V 6.8 -0.8 V V 8.0 -0.4 kV kV kV V V 10 -5 Positive Negative 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 R1 1 USB 1.1 CONTROLLER IC 3.3V 2 5 GND VBUS GND D- USB 1.1 CONNECTOR USB 1.1 CONTROLLER IC 3.3V 2 5 GND VBUS GND R1 3 4 R1 4 D+ D- D+ D2 D3 Figure 1. Full-Speed Devices (12Mbits per second) For full speed operation the pull-up resistor R2 is connected to the D+ pin. 218 USB 1.1 CONNECTOR C1 DD2 R2 C1 C1 3 D4 D1 R2 C1 6 D- D+ D4 D1 R1 1 6 D+ D3 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. 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 Tin-Lead Copper Alloy 0.004 inches (0.102mm) Silicon Molded Epoxy UL94-V-0 Outline Drawings B B 6 SPUSB1AJT - SC70-6 SPUSB1BJT - SC70-6 SPUSB1CJT - SC70-6 5 4 E 2 3 R B + + + D T A2 A + P S (REF) A1 c + + 6 JEDEC MO-203 Issue A 5 inches min max min max 0.80 1.10 0.031 0.043 A1 0.00 0.10 0.000 0.004 A2 0.70 1.00 0.028 0.039 B 0.15 0.30 0.006 0.012 A O (REF) 1 SC70-6 Pins mm Recommended Pad Layout HE Package M (REF) + N (REF) L c 0.08 0.25 0.003 0.010 D 1.85 2.25 0.073 0.089 E 1.15 1.35 0.045 0.053 e 0.65 BSC 0.026 BSC HE 2.00 2.40 0.079 0.094 L 0.26 0.46 0.010 0.018 M - 1.60 - 0.063 N - 1.30 - 0.052 O - 0.65 - 0.026 P - 0.70 - 0.058 R - 0.35 - 0.014 S - 0.90 - 0.035 T - 2.50 - 0.098 PD@70°C 0.2W # / bag 1000 pcs # / tape & reel 3,000 pcs *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 Lead Plating Lead Material Lead Coplanarity Subsitute Material Body Material Flammability