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________________general description the max3233e/max3235e are eia/tia-232 and v.28/v.24 communications interfaces with automatic shutdown/ wake-up features, high data-rate capabilities, and enhanced electrostatic discharge (esd) protection. all transmitter outputs and receiver inputs are protected to ?5kv using iec 1000-4-2 air-gap discharge, to ?kv using iec 1000-4-2 contact discharge, and to ?5kv using the human body model. the max3233e operates from a +3.3v supply; the max3235e operates from +5.0v. all devices achieve a 1? supply current using maxim? revolutionary autoshutdown plus feature. these devices automatically enter a low-power shutdown mode when the following two conditions occur: either the rs-232 cable is disconnected or the transmitters of the connected peripherals are inactive, and the uart driving the transmitter inputs is inactive for more than 30 seconds. they turn on again when they sense a valid transition at any transmitter or receiver input. autoshutdown plus saves power without changes to the existing bios or operating system. the max3233e/max3235e have internal dual charge pumps requiring no external capacitors. both trans- ceivers have a proprietary low-dropout transmitter out- put stage that enables true rs-232 performance from a +3.0v to +3.6v supply for the max3233e or a +4.5v to +5.5v supply for the max3235e. these devices are guaranteed to operate up to 250kbps. both are avail- able in space-saving 20-pin wide so or plastic dip packages. ________________________applications subnotebook and palmtop computers cellular phones battery-powered equipment handheld equipment peripherals embedded systems ____________________________features ? esd protection for rs-232 i/o pins 15kv?uman body model 8kv?ec 1000-4-2, contact discharge 15kv?ec 1000-4-2, air-gap discharge ? latchup free ? 1a supply current ? autoshutdown plus?997 edn magazine innovation of the year ? single-supply operation +3.0v to +3.6v (max3233e) +4.5v to +5.5v (max3235e) ? 250kbps guaranteed data rate ? 6v/s guaranteed slew rate ? meets eia/tia-232 specifications down to 3.0v (max3233e) ? internal charge-pump capacitors max3233e ? /max3235e ? 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors ________________________________________________________________ maxim integrated products 1 19-1473; rev 2; 8/04 part max3233e cwp 0? to +70? temp range pin- package 20 so autoshutdown plus is a trademark of maxim integrated products, inc. _______________ordering information ordering information continued at end of data sheet. max3233e max3235e 12 13 14 15 16 17 18 4 1 r2out r2in t2out gnd v- c2- c2+ c1- c1+ v+ v+ invalid t2in t1in forceon r1out t1out r1in v cc forceoff 2 9 10 5 6 7 8 3 19 20 11 charge pump so/dip pin configuration/ functional diagram typical operating circuit appears at end of data sheet. max3233ecpp 0? to +70? 20 plastic dip max3233eepp -40? to +85? 20 plastic dip max3233eewp -40? to +85? 20 so ? covered by u.s. patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; 5,649,210; and other patents pending. 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.
max3233e/max3235e 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc = +3.0v to +3.6v for max3233e, v cc = +4.5v to +5.5v for max3235e; t a = t min to t max , unless otherwise noted. typical val- ues are at t a = +25?.) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v cc to gnd (max3233e).........................................-0.3v to +4v v cc to gnd (max3235e).........................................-0.3v to +6v v+ to gnd (note 1) ..................................................-0.3v to +7v v- to gnd (note 1) ...................................................+0.3v to -7v v+ + | v- | (note 1).................................................................+13v input voltages t_in, forceon, forceoff to gnd....................-0.3v to +6v r_in to gnd ...................................................................?5v output voltages t_out to gnd.............................................................?3.2v r_out, invalid to gnd ......................-0.3v to (v cc + 0.3v) short-circuit duration t_out to gnd ......................................................continuous continuous power dissipation (t a = +70?) wide so (derate 10mw/? above +70?)..................800mw plastic dip (derate 11.11mw/? above +70?) .........889mw operating temperature ranges max323_ec_p ...................................................0? to +70? max323_ee_p ................................................-40? to +85? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) (note 2) ...................+300? note 1: v+ and v- can have maximum magnitudes of 7v, but their absolute difference cannot exceed 13v. note 2: maximum reflow temperature is +220?. forceon = gnd, forceoff = v cc , all r_in idle, all t_in idle t a = +25? conditions k ? 357 input resistance v 0.5 input hysteresis 1.8 2.4 v 1.5 2.4 input threshold high 0.8 1.3 v 0.6 1.0 input threshold low v -25 +25 input voltage range v v cc - 0.6 v cc - 0.1 output voltage high v 0.4 output voltage low ? 110 supply current, shutdown ? 110 supply current, autoshutdown plus ? ?.01 ? transmitter input hysteresis v 0.5 v 2.4 input logic threshold high ma 0.3 1 supply current, autoshutdown plus disabled v 0.8 input logic threshold low 2 units min typ max symbol parameter forceoff = gnd t a = +25? t_in, forceon, forceoff forceon = forceoff = v cc , no load t_in, forceon, forceoff i out = -1.0ma i out = 1.6ma input leakage current dc characteristics (v cc = 3.3v for max3233e, v cc = 5.0v for max3235e, t a = +25? . ) logic inputs and receiver outputs receiver inputs t a = +25? v cc = 5.0v, max3235e v cc = 3.3v, max3233e v cc = 5.0v, max3235e v cc = 3.3v, max3233e 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors t_in, forceon, forceoff v cc = 5.0v, max3235e v cc = 3.3v, max3233e
max3233e/max3235e _______________________________________________________________________________________ 3 electrical characteristics (continued) (v cc = +3.0v to +3.6v for max3233e, v cc = +4.5v to +5.5v for max3235e; t a = t min to t max , unless otherwise noted. typical val- ues are at t a = +25?.) conditions ? 300 10m output resistance v ? ?.4 output voltage swing units min typ max symbol parameter figure 3a s 15 30 60 t autoshdn receiver or transmitter edge to transmitters shut down ? 100 t wu receiver or transmitter edge to transmitters enabled ? 1 t invh receiver positive or negative threshold to invalid high v v cc - 0.6 invalid , output voltage high v 0.4 invalid output voltage low v -0.3 0.3 receiver input threshold to invalid output low -2.7 v 2.7 receiver input threshold to invalid output high ?5 ? r_in, t_out kv ?5 ? ?5 output leakage current ?0 ma output short-circuit current v cc = v+ = v- = 0, transmitter outputs = ?v all transmitter outputs loaded with 3k ? to ground figure 3b (note 3) figure 3b (note 3) figure 3b i out = -1.0ma i out = -1.6ma figure 3a human body model v out = 12v transmitters disabled iec1000-4-2 contact discharge iec1000-4-2 air discharge v cc = 0 or +4.5v to 5.5v (max3235e) v cc = 0 or +3.0v to 3.6v (max3233e) 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors ?5 max3233e max3235e 50 ? 70 t invl receiver positive or negative threshold to invalid low figure 3b transmitter outputs esd protection autoshutdown plus (forceon = gnd, forceoff = v cc ) positive threshold negative threshold note 3: a transmitter/receiver edge is defined as a transition through the transmitter/receiver input logic thresholds.
ns max3233e/max3235e 4 _______________________________________________________________________________________ timing characteristics (v cc = +3.0v to +3.6v for max3233e, v cc = +4.5v to +5.5v for max3235e; t a = t min to t max , unless otherwise noted. typical val- ues are at t a = +25?.) note 2: a transmitter/receiver edge is defined as a transition through the transmitter/receiver input logic thresholds. note 3: transmitter skew is measured at the transmitter zero cross points. c l = 150pf to 2500pf c l = 150pf to 1000pf r_in to r_out, c l = 150pf r l = 3k ? , c l = 1000pf, one transmitter switching v cc = 3.3v (max3233e), v cc = 5.0v (max3235e), t a = +25?, r l = 3k ? to 7k ? , measured from +3v to -3v or -3v to +3v normal operation normal operation (note 4) conditions 100 ns 70 t phl kbps 250 maximum data rate receiver propagation delay v/? 430 630 transition-region slew rate ns 200 receiver output enable time ns 200 receiver output disable time ns 150 ? t phl - t plh ? transmitter skew ns 180 ? t phl - t plh ? receiver skew units min typ max symbol parameter -10.0 -7.5 v out - v out + -5.0 -2.5 0 2.5 5.0 7.5 10.0 0 1000 2000 3000 4000 5000 transmitter output voltage vs. load capacitance max3233e/35etoc01 load capacitance (pf) transmitter output voltage (v) 0 10 5 25 20 15 40 35 30 45 0 2000 1000 3000 4000 5000 operating supply current vs. load capacitance max3233e/35e toc02 load capacitance (pf) supply current (ma) transmitter 1 at data rate transmitter 2 at 1/16 data rate 20kbps 120kbps 250kbps 0 2 4 6 8 10 12 14 16 0 1000 2000 3000 4000 5000 slew rate vs. load capacitance max3233e/35etoc01 load capacitance (pf) slew rate (v/ s) slew rate - slew rate + note 4: transmitter skew is measured at the transmitter zero crosspoints. __________________________________________typical operating characteristics (v cc = +3.3v for max3233e, v cc = +5.0v for max3235e; 250kbps data rate; all transmitters loaded with 3k ? and c l ; t a = +25?, unless otherwise noted.) 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors 150 250 t plh max3233e max3235e max3233e max3235e 50 max3235e max3233e
max3233e/max3235e _______________________________________________________________________________________ 5 ______________________________________________________________pin description ttl/cmos receiver outputs function pin name 1 3 7 8 9 10 11, 12 14 15 r2out 16 17 18 invalid signal detector output, active low. a logic high indicates that a valid rs-232 level is present on a receiver. t2in ttl/cmos transmitter outputs 2 invalid 5 t1out rs-232 transmitter outputs forceon force-on input, active high. drive high to override autoshutdown plus, keeping transmitters and receivers active ( forceoff must be high) (table 1). 13 r1in rs-232 receiver outputs c1+ positive terminal of the internal voltage-doubling charge-pump capacitor. leave unconnected or connect to an external 0.1? capacitor. see charge pump section. v cc supply voltage (max3233e = +3.3v, max3235e = +5.0v) forceoff force-off input, active low. drive low to shut down transmitters, receivers, and charge pump. this overrides autoshutdown plus and forceon (table 1). v+ +5.5v generated by the charge pump. do not connect. c1- negative terminal of the internal voltage-doubling charge-pump capacitor. leave unconnected or connect to an external 0.1? capacitor. see charge pump section. c2+ positive terminal of the internal inverting charge-pump capacitor. do not connect. c2- negative terminal of the internal inverting charge-pump capacitor. do not connect. v- -5.5v generated by the charge pump. do not connect. gnd ground 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors 6 r1out 4 t1in 19 t2out 20 r2in
_______________detailed description dual charge-pump voltage converter the max3233e/max3235e? internal power supply consists of a regulated dual charge pump that provides output voltages of +5.5v (doubling charge pump) and -5.5v (inverting charge pump), with no external capaci- tors. the charge pump operates in discontinuous mode: if the output voltages are less than 5.5v, the charge pump is enabled; if the output voltages exceed 5.5v, the charge pump is disabled. rs-232 transmitters the transmitters are inverting level translators that convert cmos-logic levels to 5.0v eia/tia-232 levels. the devices guarantee a 250kbps data rate with worst- case loads of 3k ? in parallel with 1000pf, providing compatibility with pc-to-pc communication software (such as laplink). transmitters can be paralleled to drive multiple receivers. figure 1 shows a complete system connection. when forceoff is driven to ground or when the auto- shutdown plus circuitry senses that all receiver and transmitter inputs are inactive for more than 30sec, the transmitters are disabled and the outputs go into a high- impedance state. when powered off or shut down, the outputs can be driven to ?2v. the transmitter inputs do not have pull-up resistors. connect unused inputs to gnd or v cc . rs-232 receivers the receivers convert rs-232 signals to cmos-logic output levels. they feature inverting outputs that always remain active (table 1). the max3233e/max3235e feature an invalid output that is enabled low when no valid rs-232 voltage levels have been detected on all receiver inputs. because invalid indicates the receiver input? condition, it is independent of forceon and forceoff states (figures 2 and 3). autoshutdown plus mode the devices achieve a 1? supply current with maxim? autoshutdown plus feature, which operates when forceoff is high and a forceon is low. when these devices do not sense a valid signal transition on any receiver or transmitter input for 30sec, the on-board charge pumps are shut down, reducing supply current to 1?. this occurs if the rs-232 cable is disconnected, or if the connected peripheral transmitters are turned off and the uart driving the transmitter inputs is inactive. the system turns on again when a valid transition is max3233e/max3235e 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors 6 _______________________________________________________________________________________ max3233e max3235e i/o chip with uart cpu rs-232 power- management unit or keyboard controller forceoff forceon invalid figure 1. interface under control of pmu laplink is a trademark of traveling software. +0.3v -0.3v invalid r_in invalid asserted if all receiver inputs are between +0.3v and -0.3v for at least 80 s. 80s timer r +2.7v -2.7v invalid r_in invalid deasserted if any receiver input has been above +2.7v or below -2.7v for 1 s. 80s timer r figure 2a. invalid functional diagram, invalid low figure 2b. invalid functional diagram, invalid high
max3233e/max3235e 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors _______________________________________________________________________________________ 7 applied to any rs-232 receiver or transmitter input. as a result, the system saves power without changes to the existing bios or operating system. figures 2a and 2b depict invalid and valid rs-232 receiver voltage levels. invalid indicates the receiver input? condition, and is independent of forceon and forceoff states. figure 2 and tables 1 and 2 sum- marize the operating modes. forceon and force- off override autoshutdown plus circuitry. when nei- ther control is asserted, the ic selects between these states automatically based on the last receiver or trans- mitter input edge received. when shut down, the device? charge pumps turn off, v+ is pulled to v cc , v- is pulled to ground, and the transmitter outputs are high impedance. the time required to exit shutdown is typically 100? (figure 7). table 1. output control truth table x = don? care * invalid connected to forceon ** invalid connected to forceon and forceoff operation status forceon forceoff valid receiver level rx or tx edge within 30sec t_out r_out shutdown (forced off) x 0 x x high-z active normal operation (forced on) 1 1 x x active active normal operation (autoshutdown plus) 0 1 x yes active active shutdown (autoshutdown plus) 0 1 x no high-z active normal operation invalid * 1 yes x active active normal operation invalid * 1 x yes active active shutdown invalid * 1 no no high-z active normal operation (autoshutdown) invalid * invalid ** yes x active active shutdown (autoshutdown) invalid * invalid ** no x high-z active autoshdn* r_in t_in r s 30sec timer edge detect edge detect forceoff forceon *autoshdn is only an internal signal. figure 2c. autoshutdown plus logic powerdown* autoshdn forceoff forceon powerdown is only an internal signal. it controls the operational status of the transmitters and the power supplies. * figure 2d. power-down logic
by connecting forceon to invalid , the device shuts down when no valid receiver level and no r eceiver or transmitter edge is detected for 30sec. it wakes up when a valid receiver level or receiver or transmitter edge is detected. by connecting forceon and forceoff to invalid , the device shuts down when no valid receiver level is detected and wakes up when a valid receiver level is detected. a system with autoshutdown plus may need time to wake up. figure 4 shows a circuit that forces the trans mitters on for 100ms, allowing enough time for another system to realize that the max3233e/ max3235e is awake. if another system outputs valid rs-232 signal transitions within that time, the rs-232 ports on both systems remain enabled. software-controlled shutdown if direct software control is desired, use invalid to indicate dtr or ring indicator signal. tie forceoff and forceon together to bypass the autoshutdown plus so the line acts like a shdn input. 15kv esd protection as with all maxim devices, esd-protection structures are incorporated on all pins to protect against electrostatic discharges encountered during handling and assembly. the driver outputs and receiver inputs have extra pro- tection against static electricity. maxim? engineers have developed state-of-the-art structures to protect these pins against esd of ?5kv without damage. the esd structures withstand high esd in all states: normal operation, shutdown, and powered down. after an esd max3233e/max3235e 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors 8 _______________________________________________________________________________________ table 2. invalid truth table low no high yes invalid output rs-232 signal present at any receiver input receiver input levels (v) -2.7 -0.3 +2.7 +0.3 0 indeterminate invalid high invalid low invalid high indeterminate figure 3a. receiver positive/negative thresholds for invalid v cc v v- v cc invalid o ransier ins receiver ins invalid reion ransier os aoshdn invl invh aoshdn figure 3b. autoshutdown plus, invalid, and ready timing diagram
max3233e/max3235e 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors _______________________________________________________________________________________ 9 event, maxim? e versions keep working without latchup, whereas competing rs-232 products can latch and must be powered down to remove latchup. esd protection can be tested in various ways; the transmitter outputs and receiver inputs of this product family are characterized for protection to the following limits: 1) ?5kv using the human body model 2) ?kv using the contact discharge method specified in iec 1000-4-2 3) ?5kv using iec 1000-4-2? air-gap discharge method 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 5a shows the human body model and figure 5b shows the current waveform it generates when dis- charged into a low impedance. this model consists of a 100pf capacitor charged to the esd voltage of inter- est, which is then discharged into the test device through a 1.5k ? resistor. iec 1000-4-2 the iec 1000-4-2 standard covers esd testing and per- formance of finished equipment; it does not specifically refer to integrated circuits. the max3233e/max3235e help you design equipment that meets level 4 (the high- est level) of iec 1000-4-2, without the need for additional esd-protection components. the major difference between tests done using the human body model and iec 1000-4-2 is higher peak cur- rent in iec 1000-4-2, because series resistance is lower in the iec 1000-4-2 model. hence, the esd withstand voltage measured to iec 1000-4-2 is generally lower than forceon master shdn line 0.1 f1m ? forceoff max3233e max3235e power- management unit figure 4. autoshutdown plus initial turn-on to wake up another system 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 5b. human body current waveform charge-current limit resistor discharge resistance storage capacitor c s 100pf r c 1m ? r d 1500 ? high- voltage dc source device under test figure 5a. human body esd test model figure 6a. iec 1000-4-2 esd test model charge current limit resistor discharge resistance storage capacitor c s 150pf r c 50m ? to 100m ? r d 330 ? high- voltage dc source device under test
that measured using the human body model. figure 6a shows the iec 1000-4-2 model, and figure 6b shows the current waveform for the ?kv, iec 1000-4-2, level 4, esd contact-discharge test. the air-gap test involves approaching the device with a charged probe. the contact-discharge method connects the probe to the device before the probe is energized. machine model the machine model for esd tests all pins using a 200pf storage capacitor and zero discharge resis- tance. its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. of course, all pins require this protec- tion during manufacturing, not just rs-232 inputs and outputs. therefore, after pc board assembly, the machine model is less relevant to i/o ports. __________applications information charge pumps the max3233e/max3235e do not require external capacitors to operate their internal charge pumps. the max3235e can be operated down to 3.0v by par- alleling the internal c1 capacitor with an external 0.1?. when using an external capacitor across the c1 termi- nals, check to confirm that the total supply voltage measured from v+ to v- does not exceed the absolute maximum voltage of 13v. with the external 0.1? capacitor added, the max3235e should not be used with a supply greater than +3.9v. power-supply decoupling in most applications, a 0.1? v cc bypass capacitor is adequate. connect bypass capacitors as close to the ic as possible. transmitter outputs when exiting shutdown figure 7 shows two transmitter outputs when exiting shutdown mode. as they become active, the two trans- mitter outputs are shown going to opposite rs-232 levels (one transmitter input is high, the other is low). max3233e/max3235e 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors 10 ______________________________________________________________________________________ t r = 0.7ns to 1ns 30ns 60ns t 100% 90% 10% i peak i figure 6b. iec 1000-4-2 esd generator current waveform 10 s/div t1out t2out 5v/div 0 2v/div 0 10v/div 0 v cc = 3.3v forceon = forceoff figure 7. transmitter outputs when exiting shutdown or powering up max3233e max3235e 5k ? r_ in r_ out forceon v cc c bypass v cc forceoff t_ out t_ in gnd v cc 1000pf figure 8. loopback test circuit
max3233e/max3235e 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors ______________________________________________________________________________________ 11 each transmitter is loaded with 3k ? in parallel with 1000pf. the transmitter outputs display no ringing or undesirable transients as they come out of shutdown. note that the transmitters are enabled only when the magnitude of v- exceeds approximately -3v. high data rates the max3233e/max3235e maintain the rs-232 ?.0v minimum transmitter output voltage even at high data rates. figure 8 shows a transmitter loopback test cir- cuit. figure 9 shows a loopback test result at 120kbps, and figure 10 shows the same test at 250kbps. for figure 9, all transmitters were driven simultaneously at 120kbps into rs-232 loads in parallel with 1000pf. for figure 10, a single transmitter was driven at 250kbps, and all transmitters were loaded with an rs-232 receiv- er in parallel with 250pf. interconnection with 3v and 5v logic the max3233e/max3235e can directly interface with various 5v logic families, including act and hct cmos. see table 3 for more information on possible combinations of interconnections. figure 9. loopback test result at 120kbps 2 s/div t1in t1out r1out 5v/div 5v/div 5v/div v cc = 3.3v (max3233e), v cc = 5.0v (max3235e) figure 10. loopback test result at 250kbps 2 s/div t1in t1out r1out 5v/div 5v/div 5v/div v cc = 3.3v (max3233e), v cc = 5.0v (max3235e) compatibility compatible with all cmos families compatible with act and hct cmos, and with ac, hc, or cd4000 cmos compatible with all ttl and cmos families device v cc supply voltage (v) max3233e 3.3 max3233e 3.3 logic power-supply voltage (v) 3.3 5 max3235e 5 3.3/5 table 3. logic family compatibility with various supply voltages
max3233e/max3235e maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2004 maxim integrated products printed usa is a registered trademark of maxim integrated products. ___________________chip information transistor count: 1129 typical operating circuit ordering information (continued) c bypass max3233e max3235e r2out 1 r1out 6 forceon invalid forceoff 2 10 5 r2in 20 gnd 18 rs-232 outputs ttl/cmos inputs t2in 3 t1in 4 c2- 16 c2+ 15 c1- 14 c1+ 13 r1in 8 t2out 19 t1out 7 v- 17 v+ 11, 12 v cc v cc 0.1 f 9 v cc rs-232 inputs ttl/cmos outputs 5k ? 5k ? autoshutdown plus part temp range pin- package max3235e cwp max3235ecpp 0? to +70? 0? to +70? 20 so 20 plastic dip max3235eewp -40? to +85? 20 so max3235eepp -40? to +85? 20 plastic dip 15kv esd-protected, 1a, 250kbps, 3.3v/5v, dual rs-232 transceivers with internal capacitors package information for the latest package outline information, go to www.maxim-ic.com/packages .
e nglish ? ???? ? ??? ? ??? what's ne w p roducts solutions de sign ap p note s sup p ort buy comp any me mbe rs max3233e part number table notes: see the max3233e quickview data sheet for further information on this product family or download the max3233e full data sheet (pdf, 184kb). 1. other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales . 2. didn't find what you need? ask our applications engineers. expert assistance in finding parts, usually within one business day. 3. part number suffixes: t or t&r = tape and reel; + = rohs/lead-free; # = rohs/lead-exempt. more: see full data sheet or part naming c onventions . 4. * some packages have variations, listed on the drawing. "pkgc ode/variation" tells which variation the product uses. 5. part number free sample buy direct package: type pins size drawing code/var * temp rohs/lead-free? materials analysis max3233ec pp+g36 pdip;20 pin;.300" dwg: 21-0043d (pdf) use pkgcode/variation: p20m+3 * 0c to +70c rohs/lead-free: yes materials analysis max3233eepp+g36 -40c to +85c rohs/lead-free: yes max3233ec pp pdip;20 pin;.300" dwg: 21-0043d (pdf) use pkgcode/variation: p20m-3 * 0c to +70c rohs/lead-free: no materials analysis max3233eepp pdip;20 pin;.300" dwg: 21-0043d (pdf) use pkgcode/variation: p20m-3 * -40c to +85c rohs/lead-free: no materials analysis max3233ec wp+tg36 soic ;20 pin;.300" dwg: 21-0042b (pdf) use pkgcode/variation: w20m+3 * 0c to +70c rohs/lead-free: yes materials analysis max3233eewp+tg36 soic ;20 pin;.300" dwg: 21-0042b (pdf) use pkgcode/variation: w20m+3 * -40c to +85c rohs/lead-free: yes materials analysis max3233ec wp+g36 soic ;20 pin;.300" dwg: 21-0042b (pdf) use pkgcode/variation: w20m+3 * 0c to +70c rohs/lead-free: yes materials analysis
max3233eewp+g36 soic ;20 pin;.300" dwg: 21-0042b (pdf) use pkgcode/variation: w20m+3 * -40c to +85c rohs/lead-free: yes materials analysis max3233ec wp-t soic ;20 pin;.300" dwg: 21-0042b (pdf) use pkgcode/variation: w20m-3 * 0c to +70c rohs/lead-free: no materials analysis max3233ec wp soic ;20 pin;.300" dwg: 21-0042b (pdf) use pkgcode/variation: w20m-3 * 0c to +70c rohs/lead-free: no materials analysis max3233eewp soic ;20 pin;.300" dwg: 21-0042b (pdf) use pkgcode/variation: w20m-3 * -40c to +85c rohs/lead-free: no materials analysis max3233eewp-t soic ;20 pin;.300" dwg: 21-0042b (pdf) use pkgcode/variation: w20m-3 * -40c to +85c rohs/lead-free: no materials analysis didn't find what you need? c ontac t us: send us an email c opyright 2 0 0 7 by m axim i ntegrated p roduc ts , dallas semic onduc tor ? legal n otic es ? p rivac y p olic y

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