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general description the MAX13481E/max13482e/max13483e 15kv esd- protected usb-compliant transceivers interface low-voltage asics with usb devices. the transceivers fully comply to usb 2.0 when operating at full-speed (12mbps). the transceivers also operate with v l as low as 1.6v, ensuring compatibility with low-voltage asics. the MAX13481E/max13482e/max13483e feature a logic-selectable suspend mode that reduces currentconsumption. integrated ?5kv esd circuitry protects d+ and d- bus connections. the MAX13481E/max13482e/max13483e operate over the extended -40? to +85? temperature range and are available in a 16-pin (3mm x 3mm) thin qfn package. applications cell phonespdas digital still cameras features ? active-low enumeration input controls d+ pullupresistor (max13482e) ? active-low enumeration input controls internalpullup switch (MAX13481E) ? 15kv esd protection on d+ and d- ? usb 2.0 full-speed compliant transceiver ? v bus detection (max13482e/max13483e) ? +1.60v to +3.6v v l allows connection with low- voltage asics ? no power-supply sequencing required ? pin compatible with mic2551a (MAX13481E) ? pin compatible with dp1680 (max13483e) ? pin compatible with dp1681 (MAX13481E) ? pin compatible with dp1682 (max13482e) MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors ________________________________________________________________ maxim integrated products 1 top view 1516 14 13 5 6 7 vp vm 8 n.c. d-oe v trm 13 v bus 4 12 10 9 v l bd n.c.sus gnd n.c. *ep max13483e rcv d+ 2 11 i.c. tqfn 3mm x 3mm 1516 14 13 5 6 7 vp vm 8 sp (n.c.) d-oe v trm 13 v bus 4 12 10 9 v l n.c. (bd) n.c.sus gnd enum *ep MAX13481Emax13482e rcv d+ 2 11 vpu (vpur) tqfn 3mm x 3mm *exposed paddle *exposed paddle ( ) max13482e only pin configurations ordering information selector guide part pin-package top mark pkg code MAX13481E ete 3mm x 3mm tqfn-ep* adf t1633-4 max13482e ete 3mm x 3mm tqfn-ep* adi t1633-4 max13483e ete 3mm x 3mm tqfn-ep* adj t1633-4 part enum input internal 1.5k resistor v bus detection MAX13481E ete ? max13482e ete ?? ? max13483e ete ? 19-3801; rev 2; 1/06 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. typical operating circuits appear at end of data sheet. * ep = exposed paddle. downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics(v cc = +4v to +5.5v, v l = +1.6v to +3.6v, t a = t min to t max , unless otherwise noted. typical values are at v cc = +5v, v l = +2.5v, t a = +25?.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (all voltages referenced to gnd, unless otherwise noted.)v bus , v l, ..................................................................-0.3v to +7v v trm , vpur, vpu .....................................-0.3v to (v bus + 0.3v) input voltage (d+, d-) ..............................................-0.3v to +7v vm, vp, sus, rcv, enum , bd, oe , ............-0.3v to (v l + 0.3v) short-circuit current to v cc or gnd (d+, d-) ........... ?50ma maximum continuous current (all other pins) ..................?5ma continuous power dissipation (t a = +70 c) 16-pin, 3mm x 3mm tqfn (derate 15.6mw/ c above +70 c).......................................................................1250mw operating temperature range ...........................-40 c to +85 c junction temperature ......................................................+150 c storage temperature range .............................-65 c to +150 c lead temperature (soldering, 10s) .................................+300 c parameter symbol conditions min typ max units supply inputs (v bus , v trm , v l ) v bus input range v bus 4.0 5.5 v v l input range v l 1.6 3.6 v regulated supply-voltage output v vtrm 3.0 3.3 3.6 v operating v cc supply current i vcc full-speed transmitting/receiving at 12mbps, c l = 50pf on d+ and d- (note 2) 10 ma operating v l supply current i vl full-speed transmitting/receiving at12mbps, c l = 15pf receiver outputs, v l = 2.5v (note 2) 2.5 ma full-speed idle, v d+ > 2.7v, v d- < 0.3v 250 350 full-speed idle and se0 supplycurrent i vcc ( idle ) se0: v d+ < 0.3v, v d- < 0.3v 250 350 ? static v l supply current i vl ( static ) full-speed idle, se0 or suspend mode 5 a suspend supply current i vcc ( susp ) vm = vp = open, enum = sus = oe = high 35 ? disabled-mode supply current i vcc ( dis ) v l = gnd or open 20 ? sharing-mode v l supply current i v l ( s h arin g ) v bus = gnd or open, oe = low, vp = low or high, vm = low or high, sus =high, enum = high 5 a disable-mode load current ond+ and d- i d x ( d is able ) v l = gnd or open, v d_ = 0 or 5.5v 5 a sharing-mode load current ond+ and d- i dx ( sh aring ) v bus = gnd or open, v d_ = 0 or 5.5v 20 ? v th_h supply present 3.6 v l 1.7v 0.8 usb power-supply detectionthreshold v th_l supply lost v l < 1.7v 0.7 v usb power-supply detectionhysteresis v hyst 75 mv v l supply-voltage detection threshold v th ( vl ) 0.85 v downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors _______________________________________________________________________________________ 3 electrical characteristics (continued)(v cc = +4v to +5.5v, v l = +1.6v to +3.6v, t a = t min to t max , unless otherwise noted. typical values are at v cc = +5v, v l = +2.5v, t a = +25?.) (note 1) parameter symbol conditions min typ max units analog voltage outputs (vpu, vpur) off-state leakage i lz enum = v l -1 +1 ? vpu switch resistance MAX13481E 10 vpur pullup resistance max13482 (note 3) 1.425 1.575 k digital inputs/outputs (vp,vm, rcv, oe , enum , sus, bd) input-high voltage v ih vp, vm, oe , enum , sus 0.7 x v l v input-low voltage v il vp, vm, oe , enum , sus 0.3 x v l v output voltage high v oh vp, vm, rcv, bd, i source = 2ma v l - 0.4 v output voltage low v ol vp, vm, rcv, bd, i sink = 2ma 0.4 v input leakage current i lkg -1 +1 ? input capacitance measured from input to gnd 10 pf analog input/outputs (d+, d-) differential input sensitivity v di |(v d+ - v d- )| 200 mv differential common-modevoltage range v cm include v di 0.8 2.5 v single-ended input-low voltage v il 0.8 v single-ended input-high voltage v ih 2.0 v hysteresis v hys 250 mv output voltage low v ol r l = 1.5k from d+ or d- to 3.6v 0.3 v output voltage high v oh r l = 15k to gnd 2.8 3.6 v off-state leakage current three-state driver -1 +1 ? transceiver capacitance c ind d_ to gnd 20 pf driver output impedance r out 21 5 esd protection (d+, d-) human body model 15 kv iec 61000-4-2 contact discharge 8k v timing characteristics(v cc = +4v to +5.5v, v l = +1.6v to +3.6v, t a = t min to t max , unless otherwise noted. typical values are at v cc = +5v, v l = +2.5v, t a = +25?.) (note 1) parameter symbol conditions min typ max units driver characteristics (c l = 50pf) rise time d+/d- t fr 10% to 90% of |v oh -v ol | (figures 1, 9) 4 20 ns fall time d+/d- t ff 90% to 10% of |v oh -v ol | (figures 1, 9) 4 20 ns rise- and fall-time matching t fr /t ff excluding the first transition from idle state,(figure 1) (note 2) 90 110 % downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 4 _______________________________________________________________________________________ parameter symbol conditions min typ max units output signal crossover voltage v crs (figure 2) (note 2) 1.3 2 v t plh_drv low-to-high transition (figure 2) 18 ns driver propagation delay t phl_drv high-to-low transition (figure 2) 18 ns t pzh_drv off-to-high transition (figures 3, 10) 20 ns driver-enabled delay time t pzl_drv off-to-low transition (figures 3, 10) 20 ns t phz_drv high-to-off transition (figures 3, 10) 20 ns driver disabled delay t plz_drv low-to-off transition (figures 3, 10) 20 ns receiver (c l = 15pf) t plh_rcv low-to-high transition (figures 4, 9) 20 differential receiverpropagation delay t phl_rcv high-to-low transition (figures 4, 9) 20 ns t plh_se low-to-high transition (figures 4, 9) 12 single-ended receiverpropagation delay t phl_se high-to-low transition (figures 4, 9) 12 ns t phz_se high-to-off transition (figure 5) 15 single-ended receiver disabledelay t plz_se off-to-low transition (figure 5) 15 ns t pzh_se off-to-high transition (figure 5) 15 single-ended receiver enabledelay t pzl_se off-to-low transition (figure 5) 15 ns timing characteristics (continued)(v cc = +4v to +5.5v, v l = +1.6v to +3.6v, t a = t min to t max , unless otherwise noted. typical values are at v cc = +5v, v l = +2.5v, t a = +25?.) (note 1) note 1: parameters are 100% production tested at +25?, unless otherwise noted. limits over temperature are guaranteed bydesign. note 2: guaranteed by design, not production tested. note 3: including external 27 series resistor. differential receiver propagation delay vs. v l v l (v) propagation delay (ns) MAX13481E toc01 1.6 2.0 2.4 2.8 3.2 3.6 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 t a = +85 c t a = +25 c t a = -40 c differential receiver propagation delay vs. temperature temperature ( c) propagation delay (ns) MAX13481E toc02 -40 -15 10 35 60 85 6 7 8 9 10 11 12 13 14 15 16 single-ended receiver propagation delay vs. v l v l (v) propagation delay (ns) max13481 toc03 1.6 2.0 2.4 2.8 3.2 3.6 0 1 2 3 4 5 6 7 t a = +85 c t a = +25 c t a = -40 c typical operating characteristics (v bus = 5v, v l = +3.3v, t a = +25?, unless otherwise noted.) downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors _______________________________________________________________________________________ 5 single-ended receiver propagation delay vs. temperature temperature ( c) propagation delay (ns) MAX13481E toc04 -40 -15 10 35 60 85 0 1 2 3 4 5 transmitter skew vs. temperature temperature ( c) transmitter skew (ns) MAX13481E toc05 -40 -15 10 35 60 85 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 100 0.01 -40 -15 35 85 60 v l suspend current vs. temperature 0.1 1 10 MAX13481E toc06 temperature ( c) v l suspend current ( a) 10 v bus suspend current vs. v bus v bus (v) v bus supply current ( a) MAX13481E toc07 4.0 4.3 4.6 4.9 5.2 5.5 13 14 15 16 17 18 19 20 t a = +85 c t a = +25 c t a = -40 c 0 42 86 10 12 1614 18 0102030405060708090100 v bus supply current vs. d+/d- capacitance MAX13481E toc08 capacitance (pf) v bus supply current (ma) 1.00 1.101.05 1.201.15 1.25 1.30 1.40 1.451.35 1.50 0102030405060708090100 v l supply current vs. d+/d- capacitance MAX13481E toc09 capacitance (pf) v bus supply current (ma) v l = 2.5v v l = 1.8v typical operating characteristics (continued) (v bus = 5v, v l = +3.3v, t a = +25?, unless otherwise noted.) transmit mode (oe = low) MAX13481E toc10 1v/div1v/div d- d+ vm vp 10ns/div receive mode (oe = high) MAX13481E toc11 1v/di v rcv1v/di v d- d+ 10ns/div suspend mode MAX13481E toc12 d- d+ sus2v/div rcv 2v/div 20ns/div 2v/div downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 6 _______________________________________________________________________________________ oe, vp, vm timing MAX13481E toc15 20ns/div vm2v/div oe2v/div vp2v/div eye diagram MAX13481E toc16 4 -1 21 0 3 0 1020304050607080 time (ns) d+ and d- (v) pin description typical operating characteristics (continued) (v bus = 5v, v l = +3.3v, t a = +25?, unless otherwise noted.) transmission in suspend mode MAX13481E toc13 vp d- d+vm 20ns/div 1v/div 1v/div bus detect response MAX13481E toc14 1 s/div bd1v/div v bus 2v/div pin MAX13481Emax13482e max13483e name function 8, 16 1, 8 1, 5, 8 n.c. no connection. not internally connected. 1s p connect to v l for pin compatibility to the mic2551a or leave floating. not internally connected. 222 rcv differential receiver output. rcv responds to the differential input on d+ and d-. rcvasserts low when sus = v l. 333v p receiver output/driver input. vp functions as a receiver output when oe = v l . vp duplicates d+ when receiving. vp functions as a driver input when oe = gnd. downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors _______________________________________________________________________________________ 7 pin description (continued) pin name function 444v m receiver output/driver input. vm functions as a receiver output when oe = v l . vm duplicates d- when receiving. vm functions as a driver input when oe = gnd. 55 enum active-low enumerator-function-selection input. enum controls the pullup resistor or switch connection. see the enum section. 666 gnd ground 777 sus suspend input. drive sus low for normal operation. drive sus high for low-power state.rcv asserts low and d+/ d- are high impedance in suspend mode. vp and vm remain active in suspend mode. 999 oe output enable. drive oe to gnd to enable the d+/d- transmitter outputs. drive oe to v l to disable the transmitter outputs. oe also controls the i/o directions of vp and vm (see tables 3 and 4). 10 10 10 d- usb input/output. for oe = gnd, d- functions as a usb output with vm providing the input signal. for oe = v l , d- functions as a usb input with vm functioning as a single-ended receiver output. 11 11 11 d+ usb input/output. for oe = gnd, d+ functions as a usb output with vp providing the input signal. for oe = v l , d+ functions as a usb input with vp functioning as a single- ended receiver output. 12 12 12 v trm regulated output voltage. v trm provides a 3.3v output derived from v bus . bypass v trm to gnd with a 1? (min) low-esr capacitor such as ceramic or plastic film types. v trm provides power to internal circuitry, the internal d+ pullup resistor, vpu and vpur. do notuse v trm to power external circuitry. 13 vpu pullup voltage. for enum = gnd, vpu is pulled to an internal 3.3v voltage. connect a 1.5k resistor between d+ and vpu for full-speed operation. for enum = v l , vpu is high impedance. 13 i.c. internally connected. leave open. do not connect to external circuitry. ? 3 vpur internal pullup resistor. vpur is pulled to an internal 3.3v voltage through a 1.5k resistor ( enum = gnd). connect vpur to d+ for full-speed operation. for enum = v l , vpu is high impedance. 14 14 14 v bus usb-side power-supply input. connect a +4v to +5.5v power supply to v bus . v bus supplies power to the internal regulator. bypass v bus to gnd with a 1? ceramic capacitor. connect v bus and v trm together when powering the MAX13481E/max13482e/ max13483e with an external power supply. 15 15 15 v l digital input/output connection logic supply. connect a +1.6v to +3.6v supply to v l . bypass v l to gnd with a 0.1? (min) low-esr ceramic capacitor. 16 16 bd usb detector output (push/pull). a high at bd signals to the asic that v bus is present. ep ep ep ep exposed paddle. connect ep to gnd. downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 8 _______________________________________________________________________________________ detailed description the MAX13481E/max13482e/max13483e 15kv esd- protected usb-compliant transceivers convert single-ended or differential logic-level signals to usb signals, and usb signals to single-ended or differential logic signals. these devices fully comply to usb 2.0 when operating at full-speed (12mbps), and operate with v l as low as 1.6v, ensuring compatibility with low-voltage asics. integrated ?5kv esd-circuitry protection pro- tects d+ and d- bus connections. the MAX13481E/max13483e require an external 1.5k pullup resistor to v trm for full-speed operation. the MAX13481E requires an external 1.5k pullup resistor and feature an active-low enumeration function thatconnects a +3.3v voltage at vpu. the max13482e fea- tures an active-low enumeration function that connects a 1.5k pullup resistor at vpur for full-speed opera- tion. the max13482e/max13483e also provide a busdetect (bd) output that asserts high when v bus > 3.6v. applications information power-supply configurations normal operating mode connect v l and v bus to system power supplies (table 1). connect v l to a +1.6v to +3.6v supply. connect v bus to a +4.0v to +5.5v supply or to the v bus connector. alternatively, these parts can derive power from a sin-gle li+ cell. connect the battery to v bus . v trm remains above +3.0v for v bus as low as +3.1v. additionally, the devices can be powered by an external +3.3v ?0% voltage regulator. connect v bus and v trm to an exter- nal +3.3v voltage regulator. v bus no longer consumes current to power the internal linear regulator in this con-figuration. the bus detect function (bd) on the max13482e and max13483e does not function when the device is powered this way. disable mode connect v bus to a system power supply and leave v l unconnected or connect to gnd. d+ and d- enter a tri-state mode and v bus (or v bus and v trm ) consumes less than 20? of supply current. d+ and d- withstandexternal signals up to +5.5v in disable mode (table 2). v bus (v) v trm (v) v l (v) configuration notes +4.0 to +5.5 +3.0 to +3.6 output +1.6 to +3.6 normal mode +4.0 to +5.5 +3.0 to +3.6 output gnd or floating disable mode table 2 gnd or floating high z +1.6 to +3.6 sharing mode table 2 +3.1 to +4.5 +3.0 to +3.6 output +1.6 to +3.6 battery supply +3.0 to +3.6 +3.0 to +3.6 input +1.6 to +3.6 voltage regulator supply table 1. power-supply configuration inputs/outputs disable mode sharing mode v bus / v trm 4v to 5.5v floating or connected to gnd v l floating or connected to gnd 1.6v to 3.6v input d+ and d- high impedance high impedance for oe = low, high impedance vp and vm invalid* for oe = high, output logic high rcv invalid* undefined bd (max13482e/max13483e) invalid* low table 2. disable-mode and sharing-mode connection* high impedance or logic low downloaded from: http:///
sharing mode connect v l to a system power supply and leave v bus (or v bus and v trm ) unconnected or connect to gnd. d+ and d- enter a tri-state mode, allowing other circuitryto share the usb d+ and d- lines. v l consumes less than 20? of supply current. d+ and d- withstand exter- nal signals up to +5.5v in sharing mode (table 2). device control oe oe controls the direction of communication. drive oe low to transfer data from the logic side to the usb side.for oe = low, vp and vm serve as differential driver inputs to the usb transmitter. drive oe high to transfer data from the usb side to the logic side. for oe = high, vp and vm serve as single-ended receiver outputsfrom the usb inputs (d+ and d-). rcv serves as a dif- ferential receiver output, regardless of the state of oe . enum (MAX13481E/max13482e) the MAX13481E/max13482e feature an active-low enu- merate function that allows software control of the 1.5k pullup resistor and switch to d+ for full-speed operation.for the MAX13481E, connect a 1.5k pullup resistor between d+ and vpu. the MAX13481E provides aninternal switch that pulls vpu to a +3.3v voltage. drive enum high to disconnect vpu from voltage. drive enum low to connect vpu and the external pullup resis- tor to the +3.3v voltage.the max13482e has an internal 1.5k resistor that connects at vpur. connect vpur directly to d+. driveenum high to disconnect the internal pullup resistor at vpur. drive enum low to connect the internal pullup resistor to vpur. sus the sus state determines whether the MAX13481E/max13482e/max13483e operate in normal mode or in suspend mode. connect sus to gnd to enable normal operation. drive sus high to enable suspend mode. rcv asserts low and vp and vm remain active in sus- pend mode (tables 3 and 4). in suspend mode, supply current is reduced. MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors _______________________________________________________________________________________ 9 inputs outputs vp vm d+ d- 0000 0101 1010 1111 table 3. transmit truth table( oe = 0) inputs outputs d+ d- vp vm rcv 0 0 0 0 rcv* 01010 10101 1111x table 4a. receive truth table( oe = 1) inputs outputs d+ d- vp vm rcv 00000 01010 10100 11110 table 4b. receive truth table( oe = 1, sus = 1) * = last statex = undefined downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 10 ______________________________________________________________________________________ v trm an internal linear regulator generates the v trm voltage (+3.3v, typ). v trm derives power from v bus (see the power-supply configurations section). v trm powers the internal portions of the usb circuitry and provides the pullup voltage for the MAX13481E/max13482e. bypass v trm to gnd with a 1? ceramic capacitor as close to the device as possible. do not use v trm to pro- vide power to any other external circuitry. d+ and d- d+ and d- serve as bidirectional bus connections andare esd-protected to ?5kv (human body model). for oe = low, d+ and d- serve as transmitter outputs. for oe = high, d+ and d- serve as receiver inputs. bd (max13482e/max13483e) the push-pull bus detect (bd) output monitors v bus and asserts high if v bus is greater than v th_h . bd asserts low if v bus is less than v th_l , and the max13482e/max13483e enter sharing mode (table 2). v bus for most applications, v bus connects to the v bus ter- minal on the usb connector (see the power-supply configurations section). v bus can also connect to an external supply. drive v bus low to enable sharing mode. bypass v bus to gnd with a 1? ceramic capac- itor as close to the device as possible. external components external capacitors the MAX13481E/max13482e/max13483e requirethree external capacitors for proper operation. bypass v l to gnd with a 0.1? ceramic capacitor. bypass v bus to gnd with a 1f ceramic capacitor. bypass v trm to gnd with a 1? (min) ceramic capacitor. install all capacitors as close to the device as possible. external resistor proper usb operation requires two external resistors,each 27 ?%. install one resistor in series between d+ of the MAX13481E/max13482e/max13483e and d+ onthe usb connector. install the other resistor in series between d- of the MAX13481E/max13482e/max13483e and d- on the usb connector (see the typical operating circuits ). the max13483e requires an external 1.5k pullup resistor between v trm and d+ for full-speed operation. the MAX13481E requires an external 1.5k pullup resistor between vpu and d+ for full-speed oper- ation. the max13482e does not require an external pullup resistor but vpur must be connected to d+ for full-speed operation. data transfer transmitting data to the usb to transmit data to the usb, drive oe low. the MAX13481E/max13482e/max13483e transmit data to the usb differentially on d+ and d-. vp and vm serveas input signals to the differential driver and are also used to assert a single-ended zero (se0) driver (see table 3). receiving data from the usb to receive data from the usb, drive oe high and sus low. differential data received by d+ and d- appears atrcv. single-ended receivers on d+ and d- drive vp and vm, respectively. rcv rcv monitors d+ and d- when receiving data. rcv is alogic 1 for d+ high and d- low. rcv is a logic 0 for d+ low and d- high. rcv retains its last valid state when d+ and d- are both low (single-ended zero, or se0). esd protection d+ and d- possess extra protection against static elec-tricity to protect the devices up to 15kv. the esd structures withstand high esd in all operating modes:normal operation, suspend mode, and powered down. d+ and d- provide protection to the following limits: ? 15kv using the human body model ? 8kv using the contact discharge method specified in iec 61000-4-2 ? to protect v bus from ?5kv esd, a 1? or greater capacitor must be connected from v bus to gnd . esd test conditions esd performance depends on a variety of conditions.contact maxim for a reliability report that documents test setup, test methodology, and test results. human body model figure 6 shows the human body model and figure 7shows the current waveform generated when dis- charged into a low impedance. this model consists of a 100pf capacitor charged to the esd voltage of inter- est, which then discharges into the test device through a 1.5k resistor. iec 61000-4-2 the iec 61000-4-2 standard covers esd testing andperformance of finished equipment. it does not specifi- cally refer to integrated circuits. the major difference between tests done using the human body model and iec 61000-4-2 is a higher peak current in iec 61000-4- 2, due to lower series resistance. hence, the esd with- downloaded from: http:///
stand voltage measured to iec 61000-4-2 generally islower than that measured using the human body model. figure 8 shows the iec 61000-4-2 model. the contact discharge method connects the probe to the device before the probe is charged. machine model the machine model for esd tests all connections using a 200pf storage capacitor and zero discharge resis- tance. its objective is to emulate the stress caused bycontact that occurs with handling and assembly during manufacturing. all pins require this protection during manufacturing, not just inputs and outputs. after pc board assembly, the machine model is less relevant to i/o ports. MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors ______________________________________________________________________________________ 11 v ohd v old 90% 10% 90% 10% t fr , t lr t ff , t lf figure 1. rise and fall times vm vp d- d+ t plh_drv t phl_drv v crs_f , v crs_l vp and vm rise/fall times < 4ns figure 2. timing of vp and vm to d+ and d- oe d+/d- t plz_drv t pzl_drv t phz_drv t pzh_drv vp/vm connected to gnd, d+/d- connected to pullup vp/vm connected to v l , d+/d- connected to pulldown oe d+/d- figure 3. driver? enable and disable timing timing diagrams downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 12 ______________________________________________________________________________________ timing diagrams (continued) +3v0v rcv, vm, and vp v l d+/d- t plh_rcv , t plh_se t phl_rcv , t phl_se input rise/fall time < 4ns figure 4. d+/d- timing to vp, vm, and rcv charge-current- limit resistor discharge resistance storagecapacitor c s 100pf r c 1m r d 1.5k high- voltage dc source device under test figure 6. human body esd test model i p 100% 90% 36.8% t rl time t dl current waveform peak-to-peak ringing(not drawn to scale) i r 10% 0 0 amperes figure 7. human body model current waveform oe vp/vmvp/vm t plz_se t pzl_se t phz_se t pzh_se d+/d- connected to gnd, vp/vm connected to pullup d+/d- connected to +3v, vp/vm connected to pulldown oe figure 5. receiver? enable and disable timing charge-current- limit resistor discharge resistance storagecapacitor c s 150pf r c 50 to 100 r d 330 high- voltage dc source device under test figure 8. iec 61000-4-2 esd test model downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors ______________________________________________________________________________________ 13 MAX13481Emax13482e max13483e rcv, vm, and vp test point (a) load for rcv, vm, and vp MAX13481Emax13482e max13483e d+ and d- 27 15k c l c l test point (b) load for d+/d- figure 9. transmitter and receiver propagation delay test circuits c l 220 test point 27 dut d+/d- + - figure 10. driver? enable and disable timing downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 14 ______________________________________________________________________________________ level translator and logic d+ d- oe v l ldo regulator to internal circuitry v trm vpu v bus MAX13481E enum rcv sus vm vp gnd functional diagrams downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors ______________________________________________________________________________________ 15 functional diagrams (continued) level translator and logic d+ d- bd v th_vbus oe v l ldo regulator to internal circuitry v trm vpur v bus max13482e enum rcv sus vm vp gnd downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 16 ______________________________________________________________________________________ functional diagrams (continued) level translator and logic d+ d- bd v th oe v l ldo regulator to internal circuitry v trm v bus max13483e rcv gnd sus vm vp downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors ______________________________________________________________________________________ 17 typical operating circuits max13482e system supply voltage v bus v l system interface vm vp gnd d- d+ gnd d- d+ v pur v trm sus bd enum oe pc 27 1% 27 1% usbpower 0.1 f 1 f 1 f 1.5k MAX13481E system supply voltage v bus vpu v l system interface vm vp sp gnd d- d+ gnd d- d+ v trm sus enum oe pc 27 1% 27 1% usbpower 0.1 f 1 f 1 f downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors 18 ______________________________________________________________________________________ chip information process: bicmos typical operating circuits (continued) max13483e system supply voltage v bus v trm v l system interface vm vp gnd d- d+ gnd d- d+ sus bd enum oe pc 27 1% 27 1% usbpower 0.1 f 1 f 1.5k 1 f downloaded from: http:///
MAX13481E/max13482e/max13483e 15kv esd-protected usb transceivers with external/internal pullup resistors maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 19 2006 maxim integrated products printed usa is a registered trademark of maxim integrated products, inc. package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation go to www.maxim-ic.com/packages .) 12x16l qfn thin.eps 0.10 c 0.08 c 0.10 m c a b d d/2 e/2 e a1 a2 a e2 e2/2 l k e (nd - 1) x e (ne - 1) x e d2 d2/2 b l e l c l e c l l c l c package outline 21-0136 2 1 f 12, 16l thin qfn, 3x3x0.8mm marking aaaa 1. dimensioning & tolerancing conform to asme y14.5m-1994. exposed pad variations 1.10 t1633-1 0.95 codes pkg.t1233-1 min.0.95 nom. 1.10 d2 1.25 1.10 0.95 1.25 nom. 1.10 max. 1.25 min. 0.95 max. 1.25 e2 12 nk a2 0.25 nea1 nd 0 0.20 ref - - 3 0.02 3 0.05 l e e 0.45 2.90 b d a 0.20 2.90 0.70 0.50 bsc. 0.55 3.00 0.65 3.10 0.25 3.00 0.75 0.30 3.10 0.80 16 0.20 ref 0.25 - 0 4 0.02 4 - 0.05 0.50 bsc. 0.30 2.90 0.40 3.00 0.20 2.90 0.70 0.25 3.00 0.75 3.100.50 0.803.10 0.30 pkg ref. min. 12l 3x3 nom. max. nom. 16l 3x3 min. max. 0.35 x 45 pin id jedec weed-1 0.35 x 45 weed-2 2. all dimensions are in millimeters. angles are in degrees.3. n is the total number of terminals. 4. the terminal #1 identifier and terminal numbering convention shall conform to jesd 95-1 spp-012. details of terminal #1 identifier are optional, but must be located within the zone indicated. the terminal #1 identifier may be either a mold or marked feature. 5. dimension b applies to metallized terminal and is measured between 0.20 mm and 0.25 mm from terminal tip. 6. nd and ne refer to the number of terminals on each d and e side respectively. 7. depopulation is possible in a symmetrical fashion. 8. coplanarity applies to the exposed heat sink slug as well as the terminals. 9. drawing conforms to jedec mo220 revision c. notes: t1233-3 1.10 1.25 0.95 1.10 0.35 x 45 1.25 weed-1 0.95 t1633f-3 0.65 t1633-4 0.95 0.80 0.95 0.65 0.80 1.10 1.25 0.95 1.10 0.225 x 45 0.95 weed-2 0.35 x 45 1.25 weed-2 t1633-2 0.95 1.10 1.25 0.95 1.10 0.35 x 45 1.25 weed-2 no down bonds allowed yes no yes n/a no package outline 21-0136 2 2 f 12, 16l thin qfn, 3x3x0.8 yes weed-1 1.25 1.10 0.95 0.35 x 45 1.25 1.10 0.95 t1233-4 t1633fh-3 0.65 0.80 0.95 0.225 x 45 0.65 0.80 0.95 weed-2 n/a 10. marking is for package orientation reference only 11. number of leads shown are for reference only downloaded from: http:///

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