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1-, 2- and 4-channel low capacitance esd protection arrays CM1213A ?2010 scillc. all rights reserved. publication order number: april 2010 ? rev. 5 CM1213A/d features ? one, two, and four channels of esd protection note: for 6- and 8-channel devices, see the cm1213 datasheet. ? provides esd protection to iec61000-4-2 level 4 ? 8kv contact discharge ? low channel input capacitance of 0.85pf typical ? minimal capacitance change with temperature and voltage ? channel input capacitance matching of 0.02pf typical is ideal for differential signals ? zener diode protects supply rail and eliminates the need for external by-pass capacitors ? each i/o pin can withstand over 1000 esd strikes* ? available in sot, sc70, and msop rohs- compliant, lead-free packages applications ? usb2.0 ports at 480mbps in desktop pcs, notebooks and peripherals ? ieee1394 firewire ? ports at 400mbps / 800mbps ? dvi ports, hdmi ports in notebooks, set top boxes, digital tvs, lcd displays ? serial ata ports in desktop pcs and hard disk drives ? pci express ports ? general purpose high-speed data line esd protection product description the CM1213A family of diode arrays has been designed to provide esd protection for electronic components or subsystems requiring minimal capacitive loading. these devices are ideal for protecting systems with high data and clock rates o r for circuits requiring low capacitive loading. each esd channel consists of a pair of diodes in series which steer the positive or negative esd current pulse to either the positive (v p ) or negative (v n ) supply rail. a zener diode is embedded between v p and v n , offering two advantages. first, it protects the v cc rail against esd strikes, and second, it eliminate s the need for a bypass capacitor that would otherwis e be needed for absorbing positive esd strikes to ground. the CM1213A will protect against esd pulses up to 8kv per the iec 61000-4-2 standard. these devices are particularly well-suited for protecting systems using high-speed ports such as usb 2.0, ieee1394 (firewire ? , ilink ? ), serial ata, dvi, hdmi and corresponding ports in removable storage, digital camcorders, dvd-rw drives and other applications where extremely low loading capacitance with esd protection are required in a small package footprint. the CM1213A family of devices is available with rohs-compliant, lead-free finishing. block diagram
CM1213A rev. 5 | page 2 of 14 | www.onsemi.com package/pinout diagrams pin descriptions 1-channel, 3-lead sot23-3 package (CM1213A-01so) 4-ch, 6-lead sot23-6 (CM1213A-04so) and sc70-6 (cm1 213a- 04s7) pin name type description pin name type description 1 ch1 i/o esd channel 1 ch1 i/o esd channel 2 v p pwr positive voltage supply rail 2 v n gnd negative voltage supply rail 3 v n gnd negative voltage supply rail 3 ch2 i/o esd channel 4 ch3 i/o esd channel 2-channel, 4-lead sot143-4 package (CM1213A-02sr) 5 v p pwr positive voltage supply rail pin name type description 6 ch4 i/o esd channel 1 v n gnd negative voltage supply rail 4-channel, 10-lead msop-10 package (CM1213A04mr) 2 ch1 i/o esd channel pin name type description 3 ch2 i/o esd channel 1 ch1 i/o esd channel 4 v p pwr positive voltage supply rail 2 nc no connect 3 v p pwr positive voltage supply rail 2-channel, 5-lead sot23-5 package (CM1213A-02so) 4 ch2 i/o esd channel pin name type description 5 nc no connect 1 nc no connect 6 ch3 i/o esd channel 2 v n gnd negative voltage supply rail 7 nc no connect 3 ch1 i/o esd channel 8 v n gnd negative voltage supply rail 4 ch2 i/o esd channel 9 ch4 i/o esd channel 5 v p pwr positive voltage supply rail 10 nc no connect
CM1213A rev. 5 | page 3 of 14 | www.onsemi.com ordering information part numbering information lead-free finish # of channels leads package ordering part number 1 part marking 1 3 sot23-3 CM1213A-01so d231 2 4 sot143-4 CM1213A-02sr d232 2 5 sot23-5 CM1213A-02so d233 4 6 sot23-6 CM1213A-04so d234 4 6 sc70-6 CM1213A-04s7 d38 4 10 msop-10 CM1213A-04mr d237 note 1: parts are shipped in tape and reel form u nless otherwise specified. specifications absolute maximum ratings parameter rating units operating supply voltage (v p - v n ) 6.0 v operating temperature range ?40 to +85 c storage temperature range ?65 to +150 c dc voltage at any channel input (v n - 0.5) to (v p + 0.5) v standard operating conditions parameter rating units operating temperature range ?40 to +85 c package power rating sot23-3, sot143-4,sot23-5, sot23-6, and sc70-6 pack ages msop-10 package 225 400 mw mw
CM1213A rev. 5 | page 4 of 14 | www.onsemi.com electrical operating characteristics (see note 1) symbol parameter conditions min typ max units v p operating supply voltage (v p -v n ) 3.3 5.5 v i p operating supply current (v p -v n )=3.3v 8.0 a v f diode forward voltage top diode bottom diode i f = 8ma; t a =25c 0.60 0.60 0.80 0.80 0.95 0.95 v v i leak channel leakage current t a =25c; v p =5v, v n =0v 0.1 1.0 a c in channel input capacitance at 1 mhz, v p =3.3v, v n =0v, v in =1.65v; note 2 0.85 1.2 pf ? c in channel input capacitance matching at 1 mhz, v p =3.3v, v n =0v, v in =1.65v; note 2 0.02 pf v esd esd protection - peak discharge voltage at any channel input, in system contact discharge per iec 61000-4-2 standard t a =25c; notes 2, 3, and 4 8 kv v cl channel clamp voltage positive transients negative transients t a =25c, i pp = 1a, t p = 8/20 s; notes 2 and 4 +10 ?1.7 v v r dyn dynamic resistance positive transients negative transients i pp = 1a, t p = 8/20 s any i/o pin to ground; notes 2 and 4 0.9 0.5 note 1: all parameters specified at t a = ?40c to +85c unless otherwise noted. note 2: standard iec 61000-4-2 with c discharge = 150pf, r discharge = 330 , v p = 3.3v, v n grounded. note 3: these measurements performed with no exter nal capacitor on v p (v p floating).
CM1213A rev. 5 | page 5 of 14 | www.onsemi.com performance information input channel capacitance performance curves
CM1213A rev. 5 | page 6 of 14 | www.onsemi.com performance information (cont?d) typical filter performance (nominal conditions unle ss specified otherwise, 50 ohm environment) figure 1. insertion loss (s21) vs. frequency (0v d c bias, v p =3.3v) figure 2. insertion loss (s21) vs. frequency (2.5v dc bias, v p =3.3v)
CM1213A rev. 5 | page 7 of 14 | www.onsemi.com application information design considerations in order to realize the maximum protection against esd pulses, care must be taken in the pcb layout to minimize parasitic series inductances on the supply /ground rails as well as the signal trace segment b etween the signal input (typically a connector) and the es d protection device. refer to error! reference source not found. , which illustrates an example of a positive esd pu lse striking an input channel. the parasitic series inductance back to the power supply is represented by l 1 and l 2 . the voltage v cl on the line being protected is: v cl = fwd voltage drop of d 1 + v supply + l 1 x d(i esd ) / dt + l 2 x d(i esd ) / dt where i esd is the esd current pulse, and v supply is the positive supply voltage. an esd current pulse can rise from zero to its peak value in a very short time. as an example, a level 4 contact discharge per the iec61000-4-2 standard results in a current pulse that rises from zero to 30 amps in 1ns. here d(i esd )/dt can be approximated by ? i esd / ? t, or 30/(1x10 -9 ). so just 10nh of series inductance (l 1 and l 2 combined) will lead to a 300v increment in v cl ! similarly for negative esd pulses, parasitic series inductance from the v n pin to the ground rail will lead to drastically increased negative voltage on the line being protected. the CM1213A has an integrated zener diode between v p and v n . this greatly reduces the effect of supply rail inductance l 2 on v cl by clamping v p at the breakdown voltage of the zener diode. howev er, for the lowest possible v cl , especially when v p is biased at a voltage significantly below the zen er breakdown voltage, it is recommended that a 0.22 f ceramic chip capacitor be connected between v p and the ground plane. as a general rule, the esd protection array should be located as close as possible to the point of ent ry of expected electrostatic discharges. the power supply bypass capacitor mentioned above should be as clos e to the v p pin of the protection array as possible, with mini mum pcb trace lengths to the power supply, ground planes and between the signal input and the esd dev ice to minimize stray series inductance. additional information see also california micro devices application note ap209, ?design considerations for esd protection,? in the applications section at www.calmicro.com . figure 3. application of positive esd pulse between input channel and ground
CM1213A rev. 5 | page 8 of 14 | www.onsemi.com mechanical details the CM1213A is available in sot23-3, sot143-4, and sot23-5, sot23-6, sc70-6, and msop-10 lead-free packages. sot23-3 mechanical specifications, 3 pin the CM1213A-01so is supplied in a 3-pin sot23 packa ge. dimensions are presented below. package dimensions package sot23-3 (jedec name is to-236) jedec no. to-236 (var. ab) pins/leads 3 millimeters inches dimensions min max min max a 0.89 1.12 0.0350 0.0441 a1 0.01 0.10 0.0004 0.0039 b 0.30 0.50 0.0118 0.0197 c 0.08 0.20 0.0031 0.0079 d 2.80 3.04 0.1102 0.1197 e 2.10 2.64 0.0827 0.1039 e1 1.20 1.40 0.0472 0.0551 e 0.95 bsc 0.0374 bsc e1 1.90 bsc 0.0748 bsc l 0.40 0.60 0.0157 0.0236 l1 0.54 ref 0.0213 ref # per tape and reel 3000 pieces controlling dimension: millimeters package dimensions for sot23-3
CM1213A rev. 5 | page 9 of 14 | www.onsemi.com tape and reel specifications part number package size (mm) pocket size (mm) b 0 x a 0 x k 0 tape width w reel diameter qty per reel p 0 p 1 CM1213A-01so 2.92 x 2.37 x 1.01 2.77 x 3.15 x 1.22 8mm 178mm (7" ) 3000 4mm 4mm
CM1213A rev. 5 | page 10 of 14 | www.onsemi.com mechanical details (cont?d) sot143-4 mechanical specifications, 4 pin the CM1213A-02sr is packaged in a 4-pin sot143 pack age. dimensions are presented below. package dimensions package sot143 pins 4 millimeters inches dimensions min max min max a 0.80 1.22 0.031 0.048 a1 0.05 0.15 0.002 0.006 b 0.30 0.50 0.012 0.019 b2 0.76 0.89 0.030 0.035 c 0.08 0.20 0.003 0.008 d 2.80 3.04 0.110 0.119 e 2.10 2.64 0.082 0.103 e1 1.20 1.40 0.047 0.055 e 1.92 bsc 0.075 bsc e1 0.20 bsc 0.008 bsc l 0.4 0.6 0.016 0.024 l1 0.54 ref 0.021 ref # per tape and reel 3000 pieces controlling dimension: millimeters package dimensions for sot143
CM1213A rev. 5 | page 11 of 14 | www.onsemi.com tape and reel specifications part number package size (mm) pocket size (mm) b 0 x a 0 x k 0 tape width w reel diameter qty per reel p 0 p 1 CM1213A-02sr 2.92 x 2.37 x 1.01 2.60 x 3.15 x 1.20 8mm 178mm (7") 3000 4mm 4mm
CM1213A rev. 5 | page 12 of 14 | www.onsemi.com mechanical details (cont?d) sot23-5 mechanical specifications, 5 pin the CM1213A-02so is supplied in a 5-pin sot23 packa ge. dimensions are presented below. package dimensions package sot23-5 jedec no. mo-178 (var. aa) leads 5 millimeters inches dim. min nom max min nom max a 1.14 1.24 1.35 0.045 0.049 0.053 a1 0.05 0.10 0.15 0.002 0.004 0.006 a2 1.09 1.14 1.19 0.043 0.045 0.047 b 0.30 0.35 0.40 0.012 0.014 0.016 c 0.08 0.15 0.22 0.003 0.006 0.009 d 2.87 2.92 2.97 0.113 0.115 0.117 e 2.67 2.79 2.92 0.105 0.110 0.115 e1 1.55 1.63 1.68 0.061 0.064 0.066 e 0.95 ref 0.020 ref e1 1.90 ref 0.075 ref l 0.35 0.40 0.45 0.014 0.016 0.018 l1 0.53 0.58 0.64 0.021 0.023 0.025 # per tape and reel 3000 pieces controlling dimension: millimeters * package dimensions for sot23-5
CM1213A rev. 5 | page 13 of 14 | www.onsemi.com tape and reel specifications part number package size (mm) pocket size (mm) b 0 x a 0 x k 0 tape width w reel diameter qty per reel p 0 p 1 CM1213A-02so 2.92 x 2.79 x 1.24 3.20 x 3.20 x 1.40 8mm 178mm (7" ) 3000 4mm 4mm
cm1213 rev. 5 | page 14 of 14 | www.onsemi.com on semiconductor and are registered trademarks of semiconductor componen ts industries, llc (scillc). scillc reserves the ri ght to make changes without further notice to any products herein. scillc makes no warranty, represe ntation or guarantee regarding the suitability of i ts products for any particular purpose, nor does sc illc assume any liability arising out of the application or use of any product or cir cuit, and specifically disclaims any and all liabil ity, including without limitation special, conseque ntial or incidental damages. ?typical? parameters which may be provided in scillc data she ets and/or specifications can and do vary in differ ent applications and actual performance may vary ov er time. all operating parameters, including ?typicals? must be validated for each customer application by customer's technic al experts. scillc does not convey any license und er its patent rights nor the rights of others. scillc products are not designed , intended, or authorized for use as components in systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other applicati on in which the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unau thorized application, buyer shall indemnify and hol d scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and ex penses, and reasonable attorney fees arising out of , directly or indirectly, any claim of personal inj ury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the des ign or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applic able copyright laws and is not for resale in any ma nner. 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: orderlit@onsemi.com 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: 81-3-5773-3850 on semiconductor website: www.onsemi.com order literature: http://www.onsemi.com/orderlit for additional information, please contact your local sales representative

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