document number: 60089 revision 07-aug-02 www.vishay.com 178 VSSX1284 vishay thin film rc networks vishay thin film ?france +33.4.93.37.28.24 fax: +33.4.93.37.27.31 ?germany +49.9287.710 fax: +49 9287.70435 ?israel +972.3. 557.0945 fax: +972.3.558.9121 ?italy + 39.2.300.11919 fax: +39.2.300.11999 ?japan +81.42.729.0661 fax: +81.42.729.3400 ?singapore +65.788.6668 fax: +65. 788.0988 ?sweden +46.8.594.70590 fax: +46.8.594.70581 ?uk +44 191 514 8237 fax: +44 1953 457 722 ?usa: (610) 407-4800 fax: (610) 640 -9081 25 mil pitch, ieee 1284 termination network resistor, capacitor, diode features one sophisticated, integrated thin film technology solution up-graded ieee 1284 parallel port termination, pull-up with the addition of diodes for filtering on the parallel port standard qsop package (28 pins) 17 terminating lines reduces total cost increase board utilization better performance over discretes vishay has upgraded the standard ieee 1284 thin film technology network, incorporating diodes for protecting the inputs/outputs from electro-static discharge (esd). the sophisticated circuit is housed in a standard qsop, 28-pin package. uses include ecp/epp parallel port terminations for pc peripherals, notebooks, desktops, workstations and servers. this is a guaranteed stock part. standard electrical specifications absolute tolerance (r) 10% absolute tolerance (c) 20% power rating per resistor 100mw per package 1 watt signal clamp voltage (+) clamp > 6v (? clamp < - 6v maximum leakage current 1 a @ 25 c @ vcc max operating temperature 0 to 70 c storage temperature - 65 c to + 150 c mechanical specifications r/c element polysilicon/thin film substrate material silicon body molded epoxy terminals copper alloy plating tin lead solder lead coplanarity 0.005 inches marking resistance mil-std-202, method 15 to solvents flammability ul94 v-0 schematic product is pictured larger than actual size to show detail 28 27 26 25 24 23 22 21 20 19 18 17 16 15 gnd v cc 1 2 3 4 5 6 7 8 9 10 11 12 13 14 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r1 r2 r2 r2 r2 r2 r2 r2 r2 r2
www.vishay.com 179 VSSX1284 vishay thin film document number: 60089 revision 07-aug-02 rc networks vishay thin film ?france +33.4.93.37.28.24 fax: +33.4.93.37.27.31 ?germany +49.9287.710 fax: +49 9287.70435 ?israel +972.3. 557.0945 fax: +972.3.558.9121 ?italy + 39.2.300.11919 fax: +39.2.300.11999 ?japan +81.42.729.0661 fax: +81.42.729.3400 ?singapore +65.788.6668 fax: +65. 788.0988 ?sweden +46.8.594.70590 fax: +46.8.594.70581 ?uk +44 191 514 8237 fax: +44 1953 457 722 ?usa: (610) 407-4800 fax: (610) 640 -9081 25 mil pitch, ieee 1284 termination network resistor, capacitor, diode esd protection max. min. peak discharge voltage at any i/o, human body model, method 3015 (note 1) + 8kv - 4kv in system protection hbm (note 2) + 15kv - 8kv in system protection, iec 1000-4-2, level 2 (note 2, 3) + 8kv - 4kv channel clamp voltage @ 8kv esd pulses, hbm (note 1, 2) + 30v - 30v note 1: human body model per mil-std-883, method 3015 c discharge = 100pf, r discharge = 1.5k ? pin 20 @ 5v and pin 22 @ ground. note 2: pin 22 grounded, pin 20 to v cc all other pins are open. esd contact discharge between ground and pins 1, 2, 8, 10, 12, 15, 16, 17, 18, 19, 21, 23 through 28, one at a time. note 3: standard iec 1000-4-2 with c discharge = 150pf, r discharge = 330 ? pin 20 @ 5v and pin 22 @ ground. dimensions and imprinting in inches and millimeters r1 (ohms) r2 (ohms) c (pf) VSSX1284a 4.7k 33 180 VSSX1284b 2.2k 33 220 how to order specify model packaging code VSSX1284a or r = tape and reel or VSSX1284b t = tubes example: VSSX1284at - model: a packaging: tubes 1 e h d seating plane a a1 b e h x 45 c l a note: mold flash not included in body dimensions. jedec mo137 package available models model a a1 b c d e e h h l a inches max. 0.068 0.008 0.012 0.010 0.394 0.157 0.025 0.244 0.016 0.035 8 millimeters max. 1.727 0.203 0.305 0.254 10.008 3.988 0.635 6.198 0.406 0.889
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