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features applications description/ordering information max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 cellular phones notebooks esd protection for rs-232 i/o pins hand-held equipment ? 15 kv (human-body model) pagers ? 8 kv (iec 61000, contact discharge) ? 8 kv (iec 61000, air-gap discharge) 300- m a operating supply current 1- m a low-power standby (with receivers active) mode designed to transmit at a data rate of 460 kbps auto-power-down plus option features flexible power-saving mode operates from a single 2.25-v to 3-v v cc supply battery-powered systems pdas the max3318 is a dual-driver, dual-receiver, rs-232 compatible transceiver. the device features auto-power-down plus and enhanced electrostatic discharge (esd) protection integrated into the chip. driver output and receiver input are protected to 8 kv using the iec 61000 air-gap discharge method, 8 kv using the iec 61000 contact discharge method, and 15 kv using the human-body model (hbm). the device operates at a data rate of 460 kbps. the transceiver has a proprietary low-dropout driver output stage enabling rs-232-compatible operation from a 2.25-v to 3-v supply with a dual charge pump. the charge pump requires only four 0.1- m f capacitors and features a logic-level output (ready) that asserts when the charge pump is regulating and the device is ready to begin transmitting. the max3318 achieves a 1- m a supply current using the auto-power-down feature. this device automatically enters a low-power power-down mode when the rs-232 cable is disconnected or the drivers of the connected peripherals are inactive for more than 30 s. the device turns on again when it senses a valid transition at any driver or receiver input. auto power down saves power without changes to the existing bios or operating system. this device is available in two space-saving packages: 20-pin ssop and 20-pin tssop. please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. production data information is current as of publication date. copyright ? 2005, texas instruments incorporated products conform to specifications per the terms of the texas instruments standard warranty. production processing does not necessarily include testing of all parameters. www .ti.com 12 3 4 5 6 7 8 9 10 2019 18 17 16 15 14 13 12 1 1 ready c1+ v+ c1? c2+ c2? v? dout2 rin2 rout2 forceoff v c c gnddout1 rin1 rout1 forceon din1 din2 inv alid db or pw p ackage (t op view)
detailed description max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 ordering information t a package (1) orderable part number top-side marking tube of 70 max3318cdb ssop ? db ma3318c reel of 2000 max3318cdbr ?0 c to 70 c tube of 70 max3318cpw tssop ? pw ma3318c reel of 2000 max3318cpwr tube of 70 max3318idb ssop ? db ma3318i reel of 2000 max3318idbr ?40 c to 85 c tube of 70 max3318ipw tssop ? pw ma3318i reel of 2000 max3318ipwr (1) package drawings, standard packing quantities, thermal data, symbolization, and pcb design guidelines are available at www.ti.com/sc/package. flexible control options for power management are featured when the serial port and driver inputs are inactive. the auto-power-down plus feature functions when forceon is low and forceoff is high. during this mode of operation, if the device does not sense valid signal transitions on all receiver and driver inputs for approximately 30 s, the built-in charge pump and drivers are powered down, reducing the supply current to 1 m a. by disconnecting the serial port or placing the peripheral drivers off, auto-power-down plus can be disabled when forceon and forceoff are high. with auto-power-down plus enabled, the device activates automatically when a valid signal is applied to any receiver or driver input. invalid is high (valid data) if any receiver input voltage is greater than 2.7 v or less than ?2.7 v, or has been between ?0.3 v and 0.3 v for less than 30 m s (typical number). invalid is low (invalid data) if all receiver input voltage are between ?0.3 v and 0.3 v for more than 30 m s (typical number). 2 www .ti.com
max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 function table (1) input conditions output states valid receiver operating rs-232 or driver mode forceon forceoff level driver receiver invalid ready edge present at within 30 s receiver auto-power-down plus conditions normal operation, h h no no active active l h auto-power-down plus disabled normal operation, h h no yes active active h h auto-power-down plus disabled normal operation, l h yes no active active l h auto-power-down plus enabled normal operation, l h yes yes active active h h auto-power-down plus enabled power down, l h no no z active l l auto-power-down plus enabled power down, l h no yes z active h l auto-power-down plus enabled manual power x l x no z active l l down manual power x l x yes z active h l down auto-power-down conditions power down, auto invalid invalid x no z active l l power down enabled normal operation, invalid invalid x yes active active h h auto power down enabled (1) h = high level, l = low level, x = irrelevant, z = high impedance 3 www .ti.com
max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 logic diagram (positive logic) 4 www .ti.com din2 din1 dout2 dout1 auto-power-down plus inv alid rin1rin2 forceoff forceon rout1rout2 1312 20 14 15 10 17 8 1 1 16 9 5 k 5 k w w ready 1
max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 terminal functions terminal description name no. c1+ 2 positive voltage-doubler charge-pump capacitor c1? 4 negative voltage-doubler charge-pump capacitor c2+ 5 positive inverting charge-pump capacitor c2? 6 negative inverting charge-pump capacitor din 12, 13 cmos driver inputs dout 8, 17 rs-232 driver outputs force-off input, active low. drive low to power down transmitters, receivers, and charge pump. this overrides forceoff 20 auto power down and forceon (see function table). force-on input, active high. drive high to override auto power down, keeping transmitters and receivers on forceon 14 ( forceoff must be high) (see function table). gnd 18 ground valid signal detector output, active low. a logic high indicates that a valid rs-232 level is present on a receiver invalid 11 input. ready to transmit output, active high. ready is enabled high when v? goes below ?3.5 v and the device is ready 1 ready to transmit. rin 9, 16 rs-232 receiver inputs rout 10, 15 cmos receiver outputs v+ 3 2 v cc generated by the charge pump v? 7 ?2 v cc generated by the charge pump v cc 19 2.25-v to 3-v single-supply voltage 5 www .ti.com
absolute maximum ratings (1) recommended operating conditions max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 over operating free-air temperature range (unless otherwise noted) min max unit v cc to gnd ?0.3 6 v v+ to gnd (2) ?0.3 7 v v? to gnd (2) ?7 0.3 v v+ + iv-i (2) 13 v din, forceon, forceoff to gnd ?0.3 6 input voltage v rin to gnd 25 dout to gnd 13.2 output voltage v rout, invalid, ready to gnd ?0.3 v cc + 0.3 short-circuit duration dout to gnd continuous 16-pin ssop (derate 7.14 mw/ c above 70 c) 571 continuous power dissipation (t a = 70 c) 20-pin ssop (derate 8 mw/ c above 70 c 640 mw 20-pin tssop (derate 7 mw/ c above 70 c) 559 storage temperature range ?65 150 c lead temperature (soldering, 10 s) 300 c (1) stresses beyond those listed under "absolute 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 under "recommended operating conditions" is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) v+ and v? can have maximum magnitudes of 7 v, but their absolute difference cannot exceed 13 v. see figure 4 min nom max unit supply voltage 2.25 2.5 3 v din, forceoff, v ih driver and control high-level input voltage v cc = 2.5 v to 3 v 0.7 v cc 5.5 v forceon din, forceoff, v il driver and control low-level input voltage v cc = 2.5 v to 3 v 0 0.3 v cc v forceon v i receiver input voltage ?25 25 v max3318c 0 70 t a operating free-air temperature c max3318i ?40 85 6 www .ti.com
supply current section electrical characteristics esd protection max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 v cc = 2.25 v to 3 v, c1?c4 = 0.1 m f, t a = t min to t max (unless otherwise noted) parameter test conditions min typ (1) max unit dc characteristics (v cc = 2.5 v, t a = 25 c) auto-power-down plus supply current forceon = gnd, forceoff = v cc , all rin and din idle 1 10 m a auto-power-down supply current forceoff = gnd 1 10 m a supply current forceon = forceoff = v cc , no load 0.3 2 ma (1) typical values are at v cc = 2.5 v, t a = 25 c. parameter test conditions typ unit human-body model (hbm) 15 rin, dout iec g1000-4-2 air-gap discharge method 8 kv iec g1000-4-2 contact discharge method 8 7 www .ti.com
driver section electrical characteristics driver section switching characteristics max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 over recommended ranges of supply voltage and operating free-air temperature, v cc = 2.25 v to 3 v, c1?c4 = 0.1 m f, t a = t min to t max (unless otherwise noted) (see figure 4 ) parameter test conditions min typ (1) max unit driver input hysteresis 0.3 v input leakage current forceon, din, forceoff 0.01 1 m a output voltage swing all driver outputs loaded with 3 k w to ground 3.7 4 v output resistance v cc = 0, driver output = 2 v 300 10m w output short-circuit current (2) 25 60 ma output leakage current v cc = 0 or 2.25 v to 3 v, v out = 12 v, drivers disabled 25 m a (1) typical values are at v cc = 2.5 v, t a = 25 c. (2) short-circuit durations should be controlled to prevent exceeding the device absolute power dissipation ratings, and not more than one output should be shorted at a time. over recommended ranges of supply voltage and operating free-air temperature, v cc = 2.25 v to 3 v, c1?c4 = 0.1 m f, t a = t min to t max (unless otherwise noted) (see figure 1 ) parameter test conditions min typ (1) max unit maximum data rate r l = 3 k w , c l = 1000 pf, one transmitter switching 460 kbps |t phl ? t plh | driver skew (2) 100 ns v cc = 2.5 v, t a = 25 c, r l = 3 k w to 7 k w , transition-region slew rate measured from 3 v to ?3 v or ?3 v to 3 v, 4 30 v/ m s c l = 150 pf to 2500 pf (1) typical values are at v cc = 2.5 v, t a = 25 c. (2) pulse skew is defined as |t plh ? t phl | of each channel of the same device. 8 www .ti.com
receiver section electrical characteristics receiver section switching characteristics max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 over recommended ranges of supply voltage and operating free-air temperature, v cc = 2.25 v to 3 v, c1?c4 = 0.1 m f, t a = t min to t max (unless otherwise noted) (see figure 4 ) parameter test conditions min typ (1) max unit input voltage range ?25 25 v input threshold low t a = 25 c 0.3 v cc v input threshold high t a = 25 c 0.7 v cc v input hysteresis 0.3 v input resistance t a = 25 c 3 5 7 k w output leakage current 0.05 10 m a output voltage low i out = 0.5 ma 0.1 v cc v output voltage high i out = ?0.5 ma 0.9 v cc v (1) typical values are at v cc = 2.5 v, t a = 25 c. over recommended ranges of supply voltage and operating free-air temperature, v cc = 2.25 v to 3 v, c1?c4 = 0.1 m f, t a = t min to t max (unless otherwise noted) (see figure 4 ) parameter test conditions typ (1) unit t phl 0.175 receiver propagation delay rin to rout, c l = 150 pf m s t plh 0.175 |t phl ? t plh | receiver skew (2) 50 ns (1) typical values are at v cc = 2.5 v, t a = 25 c. (2) pulse skew is defined as |t plh ? t phl | of each channel of the same device. 9 www .ti.com
auto-power-down plus section electrical characteristics auto-power-down plus section switching characteristics max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 over recommended ranges of supply voltage and operating free-air temperature, v cc = 2.25 v to 3 v, c1?c4 = 0.1 m f, t a = t min to t max (unless otherwise noted) (see figure 4 ) parameter test conditions min max unit positive threshold 2.7 receiver input threshold to invalid high v negative threshold ?2.7 receiver input threshold invalid low ?0.3 0.3 v invalid, ready voltage low i out = 0.5 ma 0.1 v cc v invalid, ready voltage high i out = ?0.5 ma 0.8 v cc v over recommended ranges of supply voltage and operating free-air temperature, v cc = 2.25 v to 3 v, c1?c4 = 0.1 m f, t a = t min to t max (unless otherwise noted) (see figure 4 ) parameter test conditions min typ (1) max unit t invh receiver positive or negative threshold to invalid high v cc = 2.5 v 1 m s t invl receiver positive or negative threshold to invalid low v cc = 2.5 v 30 m s t wu receiver or driver edge to driver enabled v cc = 2.5 v 100 m s t autoprdn receiver or driver edge to driver shutdown v cc = 2.5 v 15 30 60 s (1) typical values are at v cc = 2.5 v,t a = 25 c. 10 www .ti.com
parameter measurement information max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 figure 1. driver slew rate figure 2. driver pulse skew figure 3. receiver propagation delay times 11 www .ti.com 50 w test circuit vol t age w a veforms ?3 v ?3 v 3 v 3 v 0 v 3 v output input v o l v o h t t l h generator (see note b) r l 3 v forceoff rs-232output t t h l c l (see note a) s r ( t r ) 6 v t t h l o r t t l h notes: a. c l includes probe and jig capacitance. b. the pulse generator has the following characteristics: prr = 250 kbit/s, z o = 50 w , 50% duty cycle, t r 10 ns, t f 10 ns. 50 w test circuit vol t age w a veforms 0 v 2.25 v output input v o l v o h t p l h generator (see note b) r l 3 v forceoff rs-232output t p h l c l (see note a) notes: a. c l includes probe and jig capacitance. b. the pulse generator has the following characteristics: prr = 250 kbit/s, z o = 50 w , 50% duty cycle, t r 10 ns, t f 10 ns. 50% 50% 1.125 v 1.125 v test circuit vol t age w a veforms 50 w ?3 v 3 v output input v o l v o h t p h l generator (see note b) t p l h output c l (see note a) notes: a. c l includes probe and jig capacitance. b. the pulse generator has the following characteristics: z o = 50 w , 50% duty cycle, t r 10 ns, t f 10 ns. 0 v 0 v 50% 50%
parameter measurement information max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 figure 4. invalid propagation delay times and supply enabling time 12 www .ti.com t w u v cc 00 v+ v? v cc 0 driver inputs receiver inputs } inv alid output driver outputs v cc invalidregion ready output t i n v h t w u t i n v l vol t age w a veforms test circuit 50 w generator (see note b) rout auto-power- down plus inv alid dout din c l = 30 pf (see note a) 2.7 v ?2.7 v 0.3 v ?0.3 v 0 v v alid rs-232 level, inv alid high indeterminate indeterminate if signal remains within this regionfor more than 30 m s, inv alid is low 2 v alid rs-232 level, inv alid high 2 auto power down disables drivers and reduces supplycurrent to 1 m a. forceon forceoff
parameter measurement information max3318 2.5-v 460-kbps rs-232 transceiver with 15-kv esd protection slls687 ? october 2005 figure 5. typical application circuit 13 www .ti.com 14 1 10 15 20 9 gnd 18 13 6 5 4 2 rin1 16 dout2 8 v? 7 v+ 3 19 2.5 v 5k 5k rs-232-compatibleoutputs rs-232-compatible inputs t o power-management unit auto-power- down plus c1+c1? c2+ c2? din1 din2rout1 ready f o r c e o n 17 rin2 1 1 inv alid forceoff 0.1 f + + + + + c30.1 f c40.1 f c1 0.1 f c2 0.1 f c b y p a s s v c c 12 rout2 dout1 rin1 v c c
packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish msl peak temp (3) max3318cdb active ssop db 20 70 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318cdbe4 active ssop db 20 70 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318cdbr active ssop db 20 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318cdbre4 active ssop db 20 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318cpw active tssop pw 20 70 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318cpwe4 active tssop pw 20 70 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318cpwr active tssop pw 20 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318cpwre4 active tssop pw 20 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318idb active ssop db 20 70 green (rohs & no sb/br) cu nipdau level-1-260c-unlim MAX3318IDBE4 active ssop db 20 70 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318idbr active ssop db 20 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318idbre4 active ssop db 20 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318ipw active tssop pw 20 70 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318ipwe4 active tssop pw 20 70 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318ipwr active tssop pw 20 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim max3318ipwre4 active tssop pw 20 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - the planned eco-friendly classification: pb-free (rohs), pb-free (rohs exempt), or green (rohs & no sb/br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. tbd: the pb-free/green conversion plan has not been defined. pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes. pb-free (rohs exempt): this component has a rohs exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. the component is otherwise considered pb-free (rohs compatible) as defined above. green (rohs & no sb/br): ti defines "green" to mean pb-free (rohs compatible), and free of bromine (br) and antimony (sb) based flame retardants (br or sb do not exceed 0.1% by weight in homogeneous material) package option addendum www.ti.com 18-jul-2006 addendum-page 1
(3) msl, peak temp. -- the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis. package option addendum www.ti.com 18-jul-2006 addendum-page 2
mechanical data msso002e ? january 1995 ? revised december 2001 post office box 655303 ? dallas, texas 75265 db (r-pdso-g**) plastic small-outline 4040065 /e 12/01 28 pins shown gage plane 8,20 7,40 0,55 0,95 0,25 38 12,90 12,30 28 10,50 24 8,50 seating plane 9,90 7,90 30 10,50 9,90 0,38 5,60 5,00 15 0,22 14 a 28 1 20 16 6,50 6,50 14 0,05 min 5,90 5,90 dim a max a min pins ** 2,00 max 6,90 7,50 0,65 m 0,15 0 ? 8 0,10 0,09 0,25 notes: a. all linear dimensions are in millimeters. b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion not to exceed 0,15. d. falls within jedec mo-150
mechanical data mtss001c january 1995 revised february 1999 post office box 655303 ? dallas, texas 75265 pw (r-pdso-g**) plastic small-outline package 14 pins shown 0,65 m 0,10 0,10 0,25 0,50 0,75 0,15 nom gage plane 28 9,80 9,60 24 7,90 7,70 20 16 6,60 6,40 4040064/f 01/97 0,30 6,60 6,20 8 0,19 4,30 4,50 7 0,15 14 a 1 1,20 max 14 5,10 4,90 8 3,10 2,90 a max a min dim pins ** 0,05 4,90 5,10 seating plane 0 8 notes: a. all linear dimensions are in millimeters. b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion not to exceed 0,15. d. falls within jedec mo-153
important notice texas instruments incorporated and its subsidiaries (ti) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. all products are sold subject to ti?s terms and conditions of sale supplied at the time of order acknowledgment. ti warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with ti?s standard warranty. testing and other quality control techniques are used to the extent ti deems necessary to support this warranty. except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. ti assumes no liability for applications assistance or customer product design. customers are responsible for their products and applications using ti components. to minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. ti does not warrant or represent that any license, either express or implied, is granted under any ti patent right, copyright, mask work right, or other ti intellectual property right relating to any combination, machine, or process in which ti products or services are used. information published by ti regarding third-party products or services does not constitute a license from ti to use such products or services or a warranty or endorsement thereof. use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from ti under the patents or other intellectual property of ti. reproduction of information in ti data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. reproduction of this information with alteration is an unfair and deceptive business practice. ti is not responsible or liable for such altered documentation. resale of ti products or services with statements different from or beyond the parameters stated by ti for that product or service voids all express and any implied warranties for the associated ti product or service and is an unfair and deceptive business practice. ti is not responsible or liable for any such statements. following are urls where you can obtain information on other texas instruments products and application solutions: products applications amplifiers amplifier.ti.com audio www.ti.com/audio data converters dataconverter.ti.com automotive www.ti.com/automotive dsp dsp.ti.com broadband www.ti.com/broadband interface interface.ti.com digital control www.ti.com/digitalcontrol logic logic.ti.com military www.ti.com/military power mgmt power.ti.com optical networking www.ti.com/opticalnetwork microcontrollers microcontroller.ti.com security www.ti.com/security low power wireless www.ti.com/lpw telephony www.ti.com/telephony video & imaging www.ti.com/video wireless www.ti.com/wireless mailing address: texas instruments post office box 655303 dallas, texas 75265 copyright ? 2006, texas instruments incorporated

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