? 2004 california micro devices corp. all rights reserved. 11/15/04 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 1 pacusbvb-d1/d2/d3 usb downstream port terminator with vbus esd protection features ? a low-capacitance usb downstream port termina- tor, emi filter, and transient over-voltage protector in a single surface-mounted package ? esd protection to 20kv contact discharge, per mil-std-883d, method 3015 ? esd protection to 15kv contact discharge, per iec 61000-4-2 international standard ? provides esd protection for the vbus line ? compact sot23-6 package saves board space and lowers manufacturing costs compared to dis- crete solutions ? capacitors matched to a precision exceeding the usb specification ? lead-free versions available applications ? esd protection and termination of usb downstream ports ? desktop pcs ? notebooks ? set-top boxes ? usb hubs product description the pacusbvb-d1/d2/d3 is a single-channel usb downstream-port termination network. it integrates emi/rfi filter components r1 and c1 as recom- mended by the usb specification, as well as the required 15k ? pull-down resistors (r2) to gnd. in addition, pacusbvb-d1/d2/d3 provides a very high level of protection for sensitive electronic components that may be subjected to electrostatic discharge (esd). the device pins will safely dissipate esd strikes of 15kv, exceeding the maximum requirements of the iec 61000-4-2 internationa l standard. using the mil- std-883d (method 3015) specification for human body model (hbm) esd, all pins are protected from contact discharges to 20kv. the pacusbvb-d1/d2/d3 also features a fifth zener diode (cathode at pin 5) which provides esd protection for the usb vbus line. there are three options for the value of the series resistor r1: 15 ? , 33 ? , and 22 ? . this series resis- tance, plus the usb driver output resistance, must be close to the usb cable?s ch aracteristic impedance of 45 ? (each side) to minimize transmission line reflec- tions. the pacusbvb-d1/d2/d3 is housed in a 6-pin sot23 package and is available with optional lead- free finishing. electrical schematic gnd 3 5 4 2 1 c1 c1 r1 r1 r2 r2 6 v bus
? 2004 california micro devices corp. all rights reserved. 2 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 11/15/04 pacusbvb-d1/d2/d3 ordering information note 1: parts are shipped in tape & reel form unless otherwise specified. pin descriptions pins name description 1 d+ cntr d+ data to the usb controller circuitry 2 gnd ground pin 3 d- cntr d- data to the usb controller circuitry 4 d- conn d- data to the usb connector 5v bus v bus input pin 6 d+ conn d+ data to the usb connector package / pinout diagrams 6-pin sot23 v bus 1 2 6 5 3 4 udn / top view note 1: the "n" shown in part markings above represents either the digit "1," "2," or "3." note 2: these drawings are not to scale. d+ cntr gnd d- cntr d+ conn d- conn udnr part numbering information pins r1 value package standard finish lead-free finish ordering part number 1 part marking ordering part number 1 part marking 6 15 ? sot23-6 pacusbvb-d2y6 ud2 pacusbvb-d2y6r ud2r 22 ? pacusbvb-d3y6 ud3 pacusbvb-d3y6r ud3r 33 ? pacusbvb-d1y6 ud1 PACUSBVB-D1Y6R ud1r
? 2004 california micro devices corp. all rights reserved. 11/15/04 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 3 pacusbvb-d1/d2/d3 specifications absolute maximum ratings parameter rating units storage temperature range -65 to +150 c power dissipation per resistor 100 mw package power dissipation 200 mw voltage on any pin (dc) 6 v standard operat ing conditions parameter rating units operating temperature -40 to +85 c v bus input voltage 5v
? 2004 california micro devices corp. all rights reserved. 4 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 11/15/04 pacusbvb-d1/d2/d3 specifications (cont?d) note 1: guaranteed by design and characterization. note 2: esd voltage applied to pins with respec t to gnd, one at a time; unused pins are left open. note 3: pins 1 and 3 are not connected to the usb port connector, and therefore are not exposed to external esd hazards. thus, they do not require the high esd protecti on levels provided for pins 4, 5, and 6. note 4: esd clamping voltage is measured at the opposite end of r1 from the pin to which the esd discharge is applied (e.g., if esd is applied to pin 6, then the clam ping voltage is measured at pin 1). electrical operating characteristics symbol parameter conditions min typ max units r1 resistance of r1 resistor (pacusbvb-d2y6/y6r) t a = 25c 12 15 18 ? r1 resistance of r1 resistor (pacusbvb-d3y6/y6r) t a = 25c 17.6 22 26.4 ? r1 resistance of r1 resistor (pacusbvb-d1y6/y6r) t a = 25c 26.4 33 39.6 ? r2 resistance of r2 resistor t a = 25c 15 k ? tcr temperature coefficient of resis- tance note 1 + 1300 ppm/ c c1 capacitance of c1 capacitor 0 vdc; 30 mvac; 1mhz; 25c 37.6 47 56.4 pf 2.5 vdc; 30 mvac; 1mhz; 25c 25.6 32 38.4 pf tol cm matching tolerance of c1 capacitors 1mhz; 25c + 2% i leak diode leakage current to gnd m easured at 3.3 vdc, 25c 1 100 na v rb diode reverse bias voltage i load = 10 a; t a = 25c 5.5 v v sig signal voltage: positive clamp negative clamp i load = 10ma; t a = 25c i load = 10ma; t a = 25c 5.6 -0.4 6.8 -0.8 9.0 -1.5 v v v esd in-system esd wi thstand voltage mil-std-883d, method 3015 (hbm) iec 61000-4-2 contact dis- charge pins 1, 3; notes 1, 2 and 3 pins 4, 5; notes 1 and 2 pins 4, 5; notes 1 and 2 4 20 15 kv kv kv v cl clamping voltage under esd discharge mil-std-883d, method 3015 +8kv; notes 1 and 4 12 v mil-std-883d, method 3015 -8kv; notes 1 and 4 -7 v
? 2004 california micro devices corp. all rights reserved. 11/15/04 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 5 pacusbvb-d1/d2/d3 performance information capacitance vs. voltage the c1 capacitance value as a function of dc voltage across it is presented in figure 1 . the curve is normal- ized to a capacitance of 1.0 capacitance units at 2.5 vdc. figure 1. diode capacitance vs. dc voltage (normalized) insertion loss vs. frequency characteristics figure 2. insertion loss vs. frequency performance curve, pacusbvb-d1 (sot23-6) dc voltage normalized c1 capacitance 1.0 1.2 1.4 1.6 0.8 0.6 0.4 0.2 0 01234 56
? 2004 california micro devices corp. all rights reserved. 6 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 11/15/04 pacusbvb-d1/d2/d3 performance information (cont?d) figure 3. insertion loss vs. frequency performance curve, pacusbvb-d2 (sot23-6) figure 4. insertion loss vs. frequency performance curve, pacusbvb-d3 (sot23-6)
? 2004 california micro devices corp. all rights reserved. 11/15/04 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 7 pacusbvb-d1/d2/d3 application information the pacusbvb-d1/d2/d3 prov ides a complete inter- face for a single downstream usb port typically found in computers and usb hubs. it integrates the series resistors (r1) and the 15k ? pull-down resistors (r2) for both usb data lines (d+ and d-) as well as the capaci- tors to ground for emi suppression. zener diodes pro- vide esd protection up to 15kv contact discharge per the iec 61000-4-2 standard and protect the usb con- troller on both data lines. the 6-lead pacusbvb-d1/ d2/d3 device provides an additional zener diode to protect the vbus usb power line. the pacusbvb-d1/d2/d3 should be placed on the pcb between the usb controller and the usb connec- tor, as shown on the connection diagram figure 5 . figure 5. connection diag ram for pacusbvb-d1/d2/d3 to guarantee the best esd and filtering performance, it is recommende d that the pacusbvb-d1/d2/d3 be located close to the usb connector. also, the trace lengths between the pa cusbvb-d1/d2/d3 and the usb controller should be kept as short as possible. down- usb usb controller pacusbvb-nny6 d+ d- d+ d- stream connector c1 c1 r1 r1 r2 r2 vbus 1 2 3 4 5 6
? 2004 california micro devices corp. all rights reserved. 8 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 11/15/04 pacusbvb-d1/d2/d3 mechanical details sot23-6 mechanical specifications: dimensions for the pacusbv b-d1/d2/d3 supplied in a 6-pin sot23 package are presented below. for complete information on the sot23-6, see the cal- ifornia micro devices sot2 3 package information doc- ument. * this is an approximate amount which may vary. package dimensions for sot23-6. package dimensions package sot23-6 (jedec name is mo-178) pins 6 dimensions millimeters inches min max min max a -- 1.45 -- 0.057 a1 0.00 0.15 0.000 0.006 b 0.30 0.50 0.012 0.020 c 0.08 0.22 0.003 0.009 d 2.75 3.05 0.108 0.120 e 2.60 3.00 0.102 0.118 e1 1.45 1.75 0.057 0.069 e 0.95 bsc 0.0374 bsc e1 1.90 bsc 0.0748 bsc l 0.30 0.60 0.012 0.024 l1 0.60 ref 0.024 ref # per tape and reel 3000 pieces* controlling dimension: millimeters top view a side view d a1 l1 end view c l 12 3 65 4 e1 e e1 e b pin 1 marking mechanical package diagrams
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