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5 v-powered cmos rs-232 drivers/receivers adm231lCadm234l/adm236lCadm241l rev. c information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent ri ghts of analog devices. trademarks and registered trademarks are the prop erty of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ? 2005 analog devices, inc. all rights reserved. features single 5 v power supply meets all eia-232-e and v.28 specifications 120 kbps data rate on-board dc-to-dc converters 9 v output swing with 5 v supply small 1 f capacitors low power shutdown 1 a 30 v receiver input levels latch-up free applications computers peripherals modems printers instruments general description the adm2xx family of line drivers/receivers is intended for all eia-232-e and v.28 communications interfaces, especially in applications in which 12 v is not available. the adm236l and adm241l feature a low power shutdown mode that reduces power dissipation to less than 5 w, making them ideally suited for battery-powered equipment. the adm233l does not require any external components and is particularly useful in applications where printed circuit board space is critical. all members of the adm2xxl family, except the adm231l and adm239l, include two internal charge pump voltage converters that allow operation from a single 5 v supply. these parts convert the 5 v input power to the 10 v required for rs-232 output adm236l typical operating circuit t1 in t1 out t2 in t2 out rs-232 outputs t3 in t4 in r1 out r1 in r2 out r2 in ttl/cmos outputs r3 in r3 out t3 out t4 out 1 f +6.3v 1 f +16v c1+ c1? c2? c2+ v? 1 f +16v +10v to ?10v voltage inverter 1 f +6.3v 1 f +6.3v +5v input v cc +5v to +10v voltage doubler t1 t2 t3 t4 r1 r2 r3 v+ sd adm236l gnd 00070-0-015 t tl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. en figure 1. levels. the adm231l and adm239l are designed to operate from 5 v and 12 v supplies. an internal +12 v to ?12 v charge pump voltage converter generates the ?12 v supply. the adm2xxl is an enhanced upgrade to the ad2xx family. it features lower power consumption, faster slew rate, and the ability to operate with smaller (1 f) capacitors. table 1. selection table part number power supply voltage no. of rs-232 drivers no. of rs-232 receivers external capacitors low power shutdown (sd) ttl three-state en no. of pins adm231l 5 v and 7.5 v to 13.2 v 2 2 2 no no 14 adm232l 5 v 2 2 4 no no 16 adm233l 5 v 2 2 none no no 20 adm234l 5 v 4 0 4 no no 16 adm236l 5 v 4 3 4 yes yes 24 adm237l 5 v 5 3 4 no no 24 adm238l 5 v 4 4 4 no no 24 adm239l 5 v and 7.5 v to 13.2 v 3 5 2 no yes 24 adm241l 5 v 4 5 4 yes yes 28
adm231lCadm234l/adm236lCadm241l rev. c | page 2 of 20 table of contents specifications..................................................................................... 3 absolute maximum ratings............................................................ 4 esd caution.................................................................................. 4 pin configurations and function descriptions ........................... 5 typical performance characteristics ............................................. 8 typical operating circuits .............................................................. 9 general information ...................................................................... 12 circuit description .................................................................... 12 application hints ....................................................................... 13 outline dimensions ....................................................................... 14 ordering guide .......................................................................... 17 revision history 4/05rev. b to rev. c updated format..................................................................universal removed adm223, adm230l, and adm235l............universal changed hysteresis level ..................................................universal changes to specifications table...................................................... 3 updated outline dimensions ....................................................... 14 changes to ordering guide .......................................................... 17 5/01rev. a to rev. b edits to test conditions/comments of specifications................ 2 1/01rev. 0 to rev. a removed esd information from features section ...................... 1 changes to specifications table...................................................... 2 removed esd information from absolute maximum ratings section .............................................. 2 revision 0: initial version
adm231lCadm234l/adm236lCadm241l rev. c | page 3 of 20 specifications v cc = 5 v 10% (adm231l, adm232l, adm234l, adm236l, adm238l, adm239l, adm241l); v cc = 5 v 5% (adm233l and adm237l); v+ = 7.5 v to 13.2 v (adm231l and adm239l); c1 to c4 = 1.0 f ceramic. all specifications t min to t max , unless otherwise noted. table 2. parameter min typ max unit test conditions/comments output voltage swing 5 9 v all transmitter outputs loaded with 3 k? to ground v cc power supply current 2.5 6.0 ma no load, (adm232l only) 3.5 13 ma no load v+ power supply current 1.5 4 ma no load, v+ = 12 v (adm231l and adm239l only) shutdown supply current 1 10 a input logic threshold low, v inl 0.8 v t in , en , sd, en, sd input logic threshold high, v inh 2.0 v t in , en , sd, en, sd logic pull-up current 12 25 a rs-232 input voltage range 1 C30 +30 v t in = 0 v rs-232 input threshold low 0.8 1.2 v rs-232 input threshold high 1.6 2.4 v rs-232 input hysteresis 0.65 v rs-232 input resistance 3 5 7 k? t a = 0c to 85c ttl/cmos output voltage low, v ol 0.4 v ttl/cmos output voltage high, v oh 3.5 v i out = ?1.0 ma ttl/cmos output leakage current +0.05 10 a en = v cc , 0 v r out v cc output enable time (t en ) 250 ns adm236l, adm239l, adm241l (figure 31, c l = 150 pf) output disable time (t dis ) 50 ns adm236l, adm239l, adm241l (figure 31, r l = 1 k?) propagation delay 0.3 s rs-232 to ttl transition region slew rate 8 v/s r l = 3 k?, c l = 2500 pf, measured from +3 v to ?3 v or ?3 v to +3 v output resistance 300 ? v cc = v+ = vC = 0 v, v out = 2 v rs-232 output short-circuit current 10 ma 1 guaranteed by design.
adm231lCadm234l/adm236lCadm241l rev. c | page 4 of 20 absolute maximum ratings t a = 25c, unless otherwise noted. table 3. parameter rating v cc C0.3 v to +6 v v+ (v cc C 0.3 v) to +14 v vC +0.3 v to ?14 v input voltages t in C0.3 v to (v cc + 0.3 v) r in 30 v output voltages t out (v+, +0.3 v) to (vC, C0.3 v) r out C0.3 v to (v cc + 0.3 v) short-circuit duration t out continuous power dissipation n-14 pdip (derate 10 mw/c above 70c) 800 mw n-16 pdip (derate 10.5 mw/c above 70c) 840 mw n-20 pdip (derate 11 mw/c above 70c) 890 mw n-24-1 pdip (derate 13.5 mw/c above 70c) 1000 mw r-16 soic (derate 9 mw/c above 70c) 760 mw r-24 soic (derate 12 mw/c above 70c) 850 mw r-28 soic (derate 12.5 mw/c above 70c) 900 mw rs-28 ssop (derate 10 mw/c above 70c) 900 mw parameter rating q-14 cerdip (derate 10 mw/c above 70c) 720 mw q-16 cerdip (derate 10 mw/c above 70?c) 800 mw q-24 cerdip (derate 12.5 mw/c above 70c) 1000 mw thermal impedance, ja n-14 pdip 140c/w n-16 pdip 135c/w n-20 pdip 125c/w n-24-1 pdip 120c/w r-16 soic 105c/w r-24 soic 85c/w r-28 soic 80c/w rs-28 ssop 100c/w q-14 cerdip 105c/w q-16 cerdip 100c/w q-24 cerdip 55c/w operating temperature range commercial (j version) 0c to 70c industrial (a version) ?40c to +85c storage temperature range ?65c to +150c lead temperature, soldering 300c vapor phase (60 sec) 215c infrared (15 sec) 220 c stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods of time may affect device reliability. esd caution esd (electrostatic discharge) sensiti ve device. electrostatic charges as hi gh as 4000 v readily accumulate on the human body and test equipment and can discharge without detection. although this product features proprietary esd protection circuitry, permanent dama ge may occur on devices subjected to high energy electrostatic discharges. therefore, proper esd precautions are recommended to avoid performance degradation or loss of functionality.
adm231lCadm234l/adm236lCadm241l rev. c | page 5 of 20 pin configurations and function descriptions 1 2 3 4 5 6 7 14 13 12 11 10 9 8 top view (not to scale) adm231l t1 in t2 in r2 in r1 in t1 out t2 out r2 out r1 out v+ v ? v cc c1+ c1 ? gnd 00070-0-004 figure 2. adm231l pdip pin configuration nc nc = no connect 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 top view (not to scale) adm231l t1 in r1 in t1 out r1 out v+ v cc gnd t2 in r2 in t2 out r2 out v? c1+ c1? nc 00070-0-037 figure 3. adm231l soic pin configuration 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 top view (not to scale) adm232l t1 in r1 in t1 out r1 out v+ v cc gnd t2 in r2 in t 2 out r2 out v? c1+ c1? c2? c2+ 00070-0-006 figure 4. adm232l pdip/cerdip/soic pin configuration 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 top view (not to scale) adm233l r1 in t2 in r2 in t1 out t2 out r1 out v+ v? v cc c1+ c2? c2+ c1? gnd gnd c2+ c2? r2 out v? t1 in 00070-0-008 figure 5. adm233l pdip pin configuration 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 top view (not to scale) adm234l t1 in t3 in t3 out v+ v cc gnd t2 in t4 in t 1 out t4 out v? c1+ c1? c2? c2+ t 2 out 00070-0-010 figure 6. adm234l pdip/cerdip/soic pin configuration 1 2 3 7 24 23 22 18 8 9 10 17 16 15 11 12 14 13 4 5 21 20 6 19 top view (not to scale) adm236l t1 in t2 in t1 out t2 out t3 out v cc gnd sd en r3 in r1 in r2 in r2 out r1 out r3 out t3 in t4 in t4 out v+ v? c1+ c1? c2+ c? 00070-0-014 figure 7. adm236l pdip/soic pin configuration
adm231lCadm234l/adm236lCadm241l rev. c | page 6 of 20 1 2 3 7 24 23 22 18 8 9 10 17 16 15 11 12 14 13 4 5 21 20 6 19 top view (not to scale) adm237l t1 in t2 in t1 out t2 out t3 out v cc gnd r3 in r1 in r2 in r2 out r1 out r3 out t3 in t4 in t4 out v+ v? c1+ c1? c2+ c2? t5 in t5 out 00070-0-016 figure 8. adm237l pdip/cerdip/soic pin configuration 1 2 3 7 24 23 22 18 8 9 10 17 16 15 11 12 14 13 4 5 21 20 6 19 top view (not to scale) adm238l t1 in r1 in t1 out r2 out t2 out v cc gnd r4 in r2 in r3 in r3 out r1 out r4 out t2 in t3 in t3 out v+ v? c1+ c1? c2+ c2? t4 in t4 out 00070-0-018 figure 9. adm238l pdip/cerdip/soic pin configuration 1 2 3 7 24 23 22 18 8 9 10 17 16 15 11 12 14 13 4 5 21 20 6 19 top view (not to scale) adm239l r4 in r5 in r1 in r4 out r1 out v cc gnd t3 in t2 in r2 out r5 out r3 out r3 in t1 out t1 in v+ nc c+ c? t3 out r2 in t2 out v? 00070-0-020 en figure 10. adm239l pdip/cer dip/soic pin configuration 1 2 3 7 28 27 26 22 8 9 10 21 20 19 11 12 18 17 4 5 25 24 6 23 top view (not to scale) 13 14 16 15 adm241l r2 out r2 r5 in t4 in r3 in t1 out t2 out t3 out t4 out r5 out v+ v? v cc c1+ c1? c2+ c2? gnd sd out r3 out t3 in r4 in r4 out r1 in r1 out t1 in t2 in 00070-0-022 en figure 11. adm241l soic/ssop pin configuration
adm231lCadm234l/adm236lCadm241l rev. c | page 7 of 20 table 4. pin function descriptions mnemonic function v cc power supply input. 5 v 10% (5 v 5% for adm233l). v+ internally generated positive supply (+10 v nominal) on all parts, except adm 231l and adm239l. adm231l and adm239l require an external 7.5 v to 13.2 v supply. v? internally generated ne gative supply (?10 v nominal). gnd ground pin. must be connected to 0 v. c+ (adm231l and adm239l only) external capacito r (+ terminal) is connected to this pin. c? (adm231l and adm239l only) external capacito r (C terminal) is connected to this pin. c1+ (adm232l, adm234l, adm236l, adm237l, adm238l, and adm241l) ex ternal capacitor (+ termin al) is connected to this pin. (adm233l) the capacitor is connected internally an d no external connection to this pin is required. c1? (adm232l, adm234l, adm236l, adm237l, adm238l, and adm241l) ex ternal capacitor (? termin al) is connected to this pin. (adm233l) the capacitor is connected internally an d no external connection to this pin is required. c2+ (adm232l, adm234l, adm236l, adm237l, adm238l, and adm241l) ex ternal capacitor (+ termin al) is connected to this pin. (adm233l) internal capacitor connections, pi n 11 and pin 15, must be connected together. c2? (adm232l, adm234l, adm236l, adm237l, adm238l, and adm241l) ex ternal capacitor (? termin al) is connected to this pin. (adm233l) internal capacitor connections, pi n 10 and pin 16, must be connected together. t in transmitter (driver) inputs. these inp uts accept ttl/cmos levels. an internal 400 k? pull-up resistor to v cc is connected to each input. t out transmitter (driver) outputs. these ar e rs-232 levels (typically 10 v). r in receiver inputs. these inputs accept rs-232 signal levels. an internal 5 k? pull-down resistor to gnd is connected on each in put. r out receiver outputs. these are ttl/cmos levels. en enable input. active low on adm236l, adm239l, and adm241l. th is input is used to enable/d isable the receiver outputs. with en = low, the receiver outputs are enabled. with en = high, the outputs are placed in a high impedance state. this facility is useful for connectin g to microprocessor systems. sd shutdown input. active high on adm236l and adm241l. with sd = high on the adm236l and adm241l, the charge pump is disabled, the receiver outputs are placed in a high impedance state, and the dri ver outputs are turned off. nc no connect. no connections are required to this pin. table 5. adm236l and adm241l truth table sd en status transmitters t1 to t5 receivers r1 to r5 0 0 normal operation enabled enabled 0 1 normal operation enabled disabled 1 0 shutdown disabled disabled
adm231lCadm234l/adm236lCadm241l rev. c | page 8 of 20 typical performance characteristics load current (ma) ?15 510 v+/v? (v) v+ 15 v? 20 0 ?10 ?5 0 5 10 15 00070-0-026 figure 12. charge pump v+ and v? vs. current load capacitance (pf) 0 0 500 slew rate (v/ s) 5 negative slew 50 1000 10 15 20 25 30 35 40 45 positive slew 1500 2000 2500 3000 00070-0-027 figure 13. transmitter slew rate vs. load capacitance v cc (v) ?9 4.0 4.5 tx o/p (v) 5.0 5.5 6.0 ?7 ?5 ?3 ?1 1 3 5 7 9 tx o/p hi loaded tx o/p lo loaded 00070-0-028 figure 14. transmitter output voltage vs. v cc load current (ma) ?15 0 tx o/p (v) tx o/p hi 48 ?10 ?5 0 5 10 15 tx o/p lo 10 00070-0-029 6 2 figure 15. transmitter output voltage vs. current v cc (v) 0 4.5 4.7 impedance ( ? ) 200 100 50 v+ imp v? imp 150 250 300 350 4.9 5.1 5.3 5.5 00070-0-030 figure 16. charge pump impedance vs. v cc
adm231lCadm234l/adm236lCadm241l rev. c | page 9 of 20 typical operating circuits adm231l 1 f +16v c1+ c1? t1 in t1 t1 out t2 in t2 t2 out rs-232 outputs r1 out r1 r1 in r2 out r2 in ttl/cmos outputs r2 v? 1 f +16v +12v to ?12v voltage inverter v+ gnd +7.5v to +13.2v v cc 1 f +5v input 00070-0-005 ttl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. 1 2 8 7 9 6 12 5 10 4 11 3 13 14 figure 17. adm231l typical operating circuit (pdip pinout) adm232l 1 f +6.3v 1 f +16v c1+ c1? c2? c2+ t1 in t1 t1 out t2 in t2 t2 out rs-232 outputs r1 out r1 r1 in r2 out r2 in t tl/cmo s outputs r2 v? 1 f +16v +10v to ?10v voltage inverter 1 f +6.3v 1 f +6.3v 5v input v+ v cc +5v to +10v voltage doubler gnd 00070-0-007 ttl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. figure 18. adm232l typical operating circuit adm233l c1+ c1? v? v? t1 in t1 t1 out t2 in t2 t2 out rs-232 outputs r1 out r1 r1 in r2 out r2 in ttl/cmos outputs r2 c2? c2+ v cc gnd +5v input gnd internal ?10v power supply internal +10v power supply v+ c2+ c2? do not make connections to these pins 00070-0-009 ttl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. figure 19. adm233l typical operating circuit adm234l 1 f +6.3v 1 f +16v c1+ c1? c2? c2+ t1 in t1 t1 out t2 in t2 t2 out rs-232 outputs v? 1 f +16v +10v to ?10v voltage inverter 1 f +6.3v 1 f +6.3v 5v input v+ v cc +5v to +10v voltage doubler t3 t4 t3 in t4 in gnd t3 out t4 out 00070-0-011 t tl/cmos inputs 1 1 internal 400k ? pull-up resistor on each ttl/cmos input. figure 20. adm234l typical operating circuit
adm231lCadm234l/adm236lCadm241l rev. c | page 10 of 20 t1 in t1 out t2 in t2 out rs-232 outputs t3 in t4 in r1 out r1 in r2 out r2 in ttl/cmos outputs r3 in r3 out t3 out t4 out 1 f +6.3v 1 f +16v c1+ c1? c2? c2+ v? 1 f +16v +10v to ?10v voltage inverter 1 f +6.3v 1 f +6.3v +5v input v cc +5v to +10v voltage doubler t1 t2 t3 t4 r1 r2 r3 v+ sd adm236l gnd 00070-0-015 t tl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. en figure 21. adm236l typical operating circuit t1 in t1 out t2 in t2 out rs-232 outputs t3 in t4 in t5 in r1 out r1 in r2 out r2 in ttl/cmos outputs r3 in r3 out t3 out t4 out t5 out 1 f +6.3v 1 f +16v c1+ c1? c2? c2+ v? 1 f +16v +10v to ?10v voltage inverter 1 f +6.3v 1 f +6.3v +5v input v cc +5v to +10v voltage doubler t1 t2 t3 t4 t5 r1 r2 r3 v+ adm237l 20 gnd 00070-0-017 t tl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. figure 22. adm237l typical operating circuit adm238l t1 in t1 t1 out t2 in t2 t2 out rs-232 outputs t3 t4 t3 in t4 in r1 out r1 r1 in r2 out r2 r2 in ttl/cmos outputs r3 in r4 in r3 out r4 out t3 out t4 out gnd r3 r4 1 f +6.3v 1 f +16v c1+ c1? c2? c2+ v? 1 f +16v +10v to ?10v voltage inverter 1 f +6.3v 1 f +6.3v +5v input v+ v cc +5v to +10v voltage doubler 00070-0-019 t tl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. figure 23. adm238l typical operating circuit
adm231lCadm234l/adm236lCadm241l rev. c | page 11 of 20 adm239l t1 in t1 t1 out t2 in t2 t2 out rs-232 outputs t3 t3 in r1 out r1 in r2 out r2 in ttl/cmos outputs r3 in r4 in r5 in r3 out r4 out r5 out t3 out nc gnd 1 f +16v c1+ c1? v? 1 f +16v +12v to ?12v voltage inverter 1 f v+ v cc +7.5v to +13.2v input r1 r2 r3 r4 r5 00070-0-021 t tl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. en +5v input figure 24. adm239l typical operating circuit adm241l t1 in t1 t1 out t2 in t2 t2 out rs-232 outputs t3 t4 t3 in t4 in r1 out r1 r1 in r2 out r2 r2 in ttl/cmos outputs r3 in r4 in r5 in r3 out r4 out r5 out t3 out t4 out sd gnd r3 r4 r5 1 f +16v c1+ c1? c2? c2+ v? 1 f +16v +10v to ?10v voltage inverter 1 f +6.3v 1 f +6.3v +5v input v+ v cc +5v to +10v voltage doubler 1 f +16v 00070-0-023 ttl/cmos inputs 1 rs-232 inputs 2 1 internal 400k ? pull-up resistor on each ttl/cmos input. 2 internal 5k ? pull-down resistor on each rs-232 input. en figure 25. adm241l typical operating circuit
adm231lCadm234l/adm236lCadm241l rev. c | page 12 of 20 general information the adm231lCadm234l/adm236lCadm241l family of rs-232 drivers/receivers is designed to solve interface problems by meeting the eia-232-e specifications while using a single digital 5 v supply. the eia-232-e standard requires that trans- mitters deliver 5 v minimum on the transmission channel and that receivers can accept signal levels down to 3 v. the adm231lCadm234l/adm236lCadm241l meet these requirements by integrating step-up voltage converters and level-shifting transmitters and receivers onto the same chip. cmos technology is used to keep the power dissipation to an absolute minimum. a comprehensive range of transmitter/ receiver combinations is available for most communications needs. the adm236l and adm241l are particularly useful in battery-powered systems because they feature a low power shutdown mode that reduces power dissipation to less than 5 w. the adm233l is designed for applications in which space saving is important because the charge pump capacitors are molded into the package. the adm231l and adm239l include only a negative charge pump converter and are intended for applications in which +12 v is available. to facilitate sharing a common line or for connection to a microprocessor data bus, the adm236l, adm239l, and adm241l feature an enable (en, en ) function. when the receivers are disabled, their outputs are placed in a high impedance state. 1 ch1 ch3 5.00v 5.00v b w ch2 5.00v m50.0 s ch1 3.1v v+, v? exiting sd t t t sd v+ v? 00070-0-031 figure 26. charge pump v+ and v? exiting shutdown 1 ch1 5.00v ch2 5.00v m1.00 s ch1 800mv t t tx output tx input 2 00070-0-032 figure 27. transmitter output loaded slew rate 1 ch1 5.00v ch2 5.00v m1.00 s ch1 800mv t t tx output tx input 2 00070-0-033 figure 28. transmitter output unloaded slew rate circuit description the internal circuitry in the adm236l to adm241l consists of three main sections: a charge pump voltage converter, rs-232-to- ttl/cmos receivers, and ttl/cmos-to-rs-232 transmitters. charge pump dc-to-dc voltage converter the charge pump voltage converter consists of an oscillator and a switching matrix. the converter generates a 10 v supply from the 5 v input. this is done in two stages using a switched capacitor technique, as illustrated in figure 29 and figure 30. first, the 5 v input supply is doubled to 10 v, using capacitor c1 as the charge storage element. the 10 v level is then inverted to generate C10 v, using c2 as the storage element. s1 s3 v+ = 2v cc s2 s4 internal oscillator c1 c3 v cc gnd v cc 00070-0-034 figure 29. charge pump voltage doubler s1 s3 s2 s4 internal oscillator c2 c4 v + gnd v? = ?(v+) + + gnd from voltage doubler 00070-0-035 figure 30. charge pump voltage inverter capacitors c3 and c4 are used to reduce the output ripple. their values are not critical and can be reduced if higher levels of ripple are acceptable. the charge pump capacitors, c1 and c2, can be reduced at the expense of higher output impedance on the v+ and vC supplies, and the v+ and vC supplies can be used to power external circuitry if the current requirements are small.
adm231lCadm234l/adm236lCadm241l rev. c | page 13 of 20 transmitter (driver) section the drivers convert ttl/cmos input levels into eia-232-e output levels. with v cc = +5 v and driving a typical eia-232-e load, the output voltage swing is 9 v. even under worst-case conditions, the drivers are guaranteed to meet the 5 v eia-232-e minimum requirement. the input threshold levels are both ttl- and cmos-compatible with the switching threshold set at v cc /4. with a nominal v cc = 5 v, the switching threshold is 1.25 v typical. unused inputs can be left unconnected because an internal 400 k? pull-up resistor pulls them high, forcing the outputs into a low state. as required by the eia-232-e standard, the slew rate is limited to less than 30 v/s without the need for an external slew-limiting capacitor, and the output impedance in the power-off state is greater than 300 ?. receiver section the receivers are inverting level shifters that accept eia-232-e input levels (5 v to 15 v) and translate them into 5 v ttl/ cmos levels. the inputs have internal 5 k? pull-down resistors to ground and are protected against overvoltages of up to 30 v. the guaranteed switching thresholds are 0.8 v minimum and 2.4 v maximum, which are well within the 3 v eia-232-e requirement. the low level threshold is deliberately positive because it ensures that an unconnected input is interpreted as a low level. the receivers have schmitt trigger inputs with a hysteresis level of 0.65 v. this ensures error-free reception for both noisy inputs and inputs with slow transition times. shutdown (sd) the adm236l and adm241l feature a control input that can be used to disable the part and reduce the power consumption to less than 5 w. this is very useful in battery-operated systems. during shutdown, the charge pump is turned off, the transmitters are disabled, and all receivers are put into a high impedance, disabled state. the shutdown control input is active high on all parts (see table 5). enable input adm239l and adm241l feature an enable input used to enable or disable the receiver outputs. the enable input is active low on the adm239l and adm241l (see table 5). when the receivers are disabled, their outputs are placed in a high impedance state. this function allows the outputs to be connected directly to a microprocessor data bus. it can also be used to allow receivers from different devices to share a common data line. the timing diagram for the enable function is shown in figure 31. t en t dis 3v 0v r out 3.5v 0.8v v oh ? 0.1v v ol + 0.1v 00070-0-036 en figure 31. enable timing application hints driving long cables in accordance with the eia-232-e standard, long cables are per- missible, provided that the total load capacitance does not exceed 2500 pf. for longer cables that do exceed this, it is possible to trade off baud rate for cable length. large load capacitances cause a reduction in slew rate; therefore, the maximum transmission baud rate is decreased. the adm236l to adm241l are designed to minimize the slew rate reduction that occurs as load capaci- tance increases. for the receivers, it is important that a high level of noise immunity be built in so that slow rise and fall times do not cause multiple output transitions as the signal passes slowly through the transition region. the adm236l to adm241l have 0.65 v of hysteresis to guard against this. this ensures that even in noisy environments error-free reception can be achieved. high baud rate operation the adm236l to adm241l feature high slew rates, permitting data transmission at rates well in excess of the eia-232-e specification. the drivers maintain 5 v signal levels at data rates up to 100 kbps under worst-case loading conditions.
adm231lCadm234l/adm236lCadm241l rev. c | page 14 of 20 outline dimensions 14 17 8 0.685 (17.40) 0.665 (16.89) 0.645 (16.38) 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 0.100 (2.54) bsc seating plane 0.180 (4.57) max 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.060 (1.52) 0.050 (1.27) 0.045 (1.14) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.015 (0.38) min 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design compliant to jedec standards mo-095-ab figure 32. 14-lead plastic dual in-line package [pdip] (n-14) dimensions shown in inches and (millimeters) 16 1 8 9 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 0.100 (2.54) bsc seating plane 0.015 (0.38) min 0.180 (4.57) max 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.060 (1.52) 0.050 (1.27) 0.045 (1.14) 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.785 (19.94) 0.765 (19.43) 0.745 (18.92) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design compliant to jedec standards mo-095ac figure 33. 16-lead plastic dual in-line package [pdip] (n-16) dimensions shown in inches and (millimeters) controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-013aa seating plane 0.30 (0.0118) 0.10 (0.0039) 0.51 (0.0201) 0.31 (0.0122) 2.65 (0.1043) 2.35 (0.0925) 1.27 (0.0500) bsc 16 9 8 1 10.65 (0.4193) 10.00 (0.3937) 7.60 (0.2992) 7.40 (0.2913) 10.50 (0.4134) 10.10 (0.3976) 8 0 0.75 (0.0295) 0.25 (0.0098) 45 1.27 (0.0500) 0.40 (0.0157) 0.33 (0.0130) 0.20 (0.0079) coplanarity 0.10 figure 34. 16-lead standard small outline package [soic] wide body (r-16) dimensions shown in millimeters and (inches) 14 17 8 0.310 (7.87) 0.220 (5.59) pin 1 0.005 (0.13) min 0.098 (2.49) max 0.100 (2.54) bsc 15 0 0.320 (8.13) 0.290 (7.37) 0.015 (0.38) 0.008 (0.20) seating plane 0.200 (5.08) max 0.785 (19.94) max 0.150 (3.81) min 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36) 0.070 (1.78) 0.030 (0.76) 0.060 (1.52) 0.015 (0.38) c ontrolling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents fo r reference only and are not appropriate for use in desig n figure 35. 14-lead ceramic dual in-line package [cerdip] (q-14) dimensions shown in inches and (millimeters)
adm231lCadm234l/adm236lCadm241l rev. c | page 15 of 20 16 18 9 0.310 (7.87) 0.220 (5.59) pin 1 0.005 (0.13) min 0.098 (2.49) max 15 0 0.320 (8.13) 0.290 (7.37) 0.015 (0.38) 0.008 (0.20) seating plane 0.200 (5.08) max 0.840 (21.34) max 0.150 (3.81) min 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36) 0.100 (2.54) bsc 0.070 (1.78) 0.030 (0.76) 0.060 (1.52) 0.015 (0.38) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design figure 36. 16-lead ceramic dual in-line package [cerdip] (q-16) dimensions shown in inches and (millimeters) 20 1 10 11 0.985 (25.02) 0.965 (24.51) 0.945 (24.00) 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) seating plane 0.015 (0.38) min 0.180 (4.57) max 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.100 (2.54) bsc 0.060 (1.52) 0.050 (1.27) 0.045 (1.14) 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design compliant to jedec standards mo-095-ae figure 37. 20-lead plastic dual in-line package [pdip] (n-20) dimensions shown in inches and (millimeters) controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-013ac 0.75 (0.0295) 0.25 (0.0098) 20 11 10 1 8 0 45 1.27 (0.0500) 0.40 (0.0157) seating plane 0.30 (0.0118) 0.10 (0.0039) 0.51 (0.0201) 0.31 (0.0122) 2.65 (0.1043) 2.35 (0.0925) 0.33 (0.0130) 0.20 (0.0079) 1.27 (0.0500) bsc 10.65 (0.4193) 10.00 (0.3937) 7.60 (0.2992) 7.40 (0.2913) 13.00 (0.5118) 12.60 (0.4961) coplanarity 0.10 figure 38. 20-lead standard small outline package [soic] wide body (r-20) dimensions shown in millimeters and (inches) 20 110 11 0.310 (7.87) 0.220 (5.59) pin 1 0.005 (0.13) min 0.098 (2.49) max 15 0 0.320 (8.13) 0.290 (7.37) 0.015 (0.38) 0.008 (0.20) seating plane 0.200 (5.08) max 1.060 (26.92) max 0.150 (3.81) min 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36) 0.100 (2.54) bsc 0.070 (1.78) 0.030 (0.76) 0.060 (1.52) 0.015 (0.38) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design figure 39. 20-lead ceramic dual in-line package [cerdip] (q-20) dimensions shown in inches and (millimeters) 24 112 13 1.185 (30.01) 1.165 (29.59) 1.145 (29.08) 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) seating plane 0.015 (0.38) min 0.180 (4.57) max 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0 .150 (3.81) 0 .130 (3.30) 0 .110 (2.79) 0.100 (2.54) bsc 0.060 (1.52) 0.050 (1.27) 0.045 (1.14) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design compliant to jedec standards mo-095ag figure 40. 24-lead plastic dual in-line package [pdip] (n-24-1) dimensions shown in inches and (millimeters) seating plane 0.023 (0.58) 0.014 (0.36) 0.075 (1.91) 0.015 (0.38) 0.225 (5.72) max 0.200 (5.08) 0.120 (3.05) 0.070 (1.78) 0.030 (0.76) 0.150 (3.81) min 1.290 (32.77) max 0.100 (2.54) bsc 24 2 1 13 0.610 (15.49) 0.500 (12.70) pin 1 0.098 (2.49) max 0.005 (0.13) min 0.620 (15.75) 0.590 (14.99) 0.015 (0.38) 0.008 (0.20) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design figure 41. 24-lead side-brazed cera mic dual in-line package [sbdip] (d-24-2) dimensions shown in inches and (millimeters)
adm231lCadm234l/adm236lCadm241l rev. c | page 16 of 20 1.290 (32.77) 1.150 (31.57) 0.580 (14.73) 0.485 (12.32) 0.165 (4.19) 0.160 (4.06) 0.155 (3.93) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.610 (15.49) 0.600 (15.24) 0.590 (14.99) 0.015 (0.38) min 0 .210 (5.34) max seating plane 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.100 (2.54) bsc 0.070 (1.78) 0.030 (0.76) 0.200 (5.08) 0.115 (2.92) 24 1 12 13 pin 1 controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-011-aa figure 42. 24-lead plastic dual in-line package [pdip] wide body (n-24-2) dimensions shown in inches and (millimeters) 24 112 13 0.310 (7.87) 0.220 (5.59) pin 1 0.005 (0.13) min 0.098 (2.49) max 15 0 0.320 (8.13) 0.290 (7.37) 0.015 (0.38) 0.008 (0.20) seating plane 0.200 (5.08) max 1.280 (32.51) max 0.150 (3.81) min 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36) 0.100 (2.54) bsc 0.070 (1.78) 0.030 (0.76) 0.060 (1.52) 0.015 (0.38) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design figure 43. 24-lead ceramic dual in-line package [cerdip] (q-24) dimensions shown in inches and (millimeters) controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-013ad 8 0 0.75 (0.0295) 0.25 (0.0098) 45 1.27 (0.0500) 0.40 (0.0157) 0.33 (0.0130) 0.20 (0.0079) seating plane 0.30 (0.0118) 0.10 (0.0039) 0.51 (0.020) 0.31 (0.012) 2.65 (0.1043) 2.35 (0.0925) 1.27 (0.0500) bsc 24 13 12 1 10.65 (0.4193) 10.00 (0.3937) 7.60 (0.2992) 7.40 (0.2913) 15.60 (0.6142) 15.20 (0.5984) coplanarit y 0.10 figure 44. 24-lead standard small outline package [soic] wide body (r-24) dimensions shown in millimeters and (inches) controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-013ae 0.33 (0.0130) 0.20 (0.0079) 8 0 0.75 (0.0295) 0.25 (0.0098) 45 1.27 (0.0500) 0.40 (0.0157) seating plane 0.30 (0.0118) 0.10 (0.0039) 0.51 (0.0201) 0.33 (0.0130) 2.65 (0.1043) 2.35 (0.0925) 1.27 (0.0500) bsc 28 15 14 1 18.10 (0.7126) 17.70 (0.6969) 10.65 (0.4193) 10.00 (0.3937) 7.60 (0.2992) 7.40 (0.2913) coplanarity 0.10 figure 45. 28-lead standard small outline package [soic] wide body (r-28) dimensions shown in millimeters and (inches) 0.25 0.09 0.95 0.75 0.55 8 4 0 0.05 min 1.85 1.75 1.65 2.00 max 0.38 0.22 seating plane 0.65 bsc coplanarity 0.10 28 15 14 1 10.50 10.20 9.90 5.60 5.30 5.00 8.20 7.80 7.40 pin 1 compliant to jedec standards mo-150ah figure 46. 28-lead shrink small outline package [ssop] (rs-28) dimensions shown in millimeters
adm231lCadm234l/adm236lCadm241l rev. c | page 17 of 20 ordering guide model temperature range package description package option adm231ljn 0c to 70c 14-lead pdip n-14 adm231ljr 0c to 70c 16-lead soic r-16 adm231ljr-reel 0c to 70c 16-lead soic r-16 adm231ljrz-reel 1 0c to 70c 16-lead soic r-16 adm231lan C40c to +85c 14-lead pdip n-14 adm231laq C40c to +85c 14-lead cerdip q-14 adm231lar C40c to +85c 16-lead soic r-16 adm231lar-reel C40c to +85c 16-lead soic r-16 adm232ljr 0c to 70c 16-lead soic r-16 adm232ljr-reel 0c to 70c 16-lead soic r-16 adm232ljrz 1 0c to 70c 16-lead soic r-16 adm232ljrz-reel7 1 0c to 70c 16-lead soic r-16 adm232lan C40c to +85c 16-lead pdip n-16 adm232lar C40c to +85c 16-lead soic r-16 adm232lar-reel C40c to +85c 16-lead soic r-16 adm232larz 1 C40c to +85c 16-lead soic r-16 adm232larz-reel 1 C40c to +85c 16-lead soic r-16 adm232ljn 0c to 70c 20-lead pdip n-16 adm232ljnz 1 0c to 70c 20-lead pdip n-16 adm233ljn 0c to 70c 20-lead pdip n-20 adm233lan C40c to +85c 20-lead pdip n-20 adm234ljn 0c to 70c 16-lead pdip n-16 adm234ljr 0c to 70c 16-lead soic r-16 adm234ljr-reel 0c to 70c 16-lead soic r-16 adm234ljrz 1 0c to 70c 16-lead soic r-16 adm234ljrz-reel 1 0c to 70c 16-lead soic r-16 adm234lan C40c to +85c 16-lead pdip n-16 adm234laq C40c to +85c 16-lead cerdip q-16 adm234lar C40c to +85c 16-lead soic r-16 adm234lar-reel C40c to +85c 16-lead soic r-16 adm236ljn 0c to 70c 24-lead pdip n-24-1 adm236ljr 0c to 70c 24-lead soic r-24 adm236ljr-reel 0c to 70c 24-lead soic r-24 adm236lan C40c to +85c 24-lead pdip n-24-1 adm236lar C40c to +85c 24-lead soic r-24 adm236lar-reel C40c to +85c 24-lead soic r-24 adm237ljn 0c to 70c 24-lead pdip n-24-1 adm237ljr 0c to 70c 24-lead soic r-24 adm237ljr-reel 0c to 70c 24-lead soic r-24 adm237ljrz 1 0c to 70c 24-lead soic r-24 adm237ljrz-reel 1 0c to 70c 24-lead soic r-24 adm237lan C40c to +85c 24-lead pdip n-24-1 adm237laq C40c to +85c 24-lead cerdip q-24 adm237lar C40c to +85c 24-lead soic r-24 adm237lar-reel C40c to +85c 24-lead soic r-24 adm238ljn 0c to 70c 24-lead pdip n-24-1 adm238ljnz 1 0c to 70c 24-lead pdip n-24-1 adm238ljr 0c to 70c 24-lead soic r-24 adm238ljr-reel 0c to 70c 24-lead soic r-24 adm238ljrz 1 0c to 70c 24-lead soic r-24 adm238ljrz-reel 1 0c to 70c 24-lead soic r-24
adm231lCadm234l/adm236lCadm241l rev. c | page 18 of 20 model temperature range package description package option adm238lan C40c to +85c 24-lead pdip n-24-1 adm238laq C40c to +85c 24-lead cerdip q-24 adm238lar C40c to +85c 24-lead soic r-24 ADM238LAR-REEL C40c to +85c 24-lead soic r-24 adm238larz 1 C40c to +85c 24-lead soic r-24 adm238larz-reel 1 C40c to +85c 24-lead soic r-24 adm239ljn 0c to 70c 24-lead pdip n-24-1 adm239ljr 0c to 70c 24-lead soic r-24 adm239ljr-reel 0c to 70c 24-lead soic r-24 adm239ljrz 1 0c to 70c 24-lead soic r-24 adm239ljrz-reel 1 0c to 70c 24-lead soic r-24 adm239lan C40c to +85c 24-lead pdip n-24-1 adm239laq C40c to +85c 24-lead cerdip q-24 adm239lar C40c to +85c 24-lead soic r-24 adm239lar-reel C40c to +85c 24-lead soic r-24 adm241ljr 0c to 70c 28-lead soic r-28 adm241ljr-reel 0c to 70c 28-lead soic r-28 adm241ljrz 1 0c to 70c 28-lead soic r-28 adm241ljrz-reel 1 0c to 70c 28-lead soic r-28 adm241lar C40c to +85c 28-lead soic r-28 adm241lar-reel C40c to +85c 28-lead soic r-28 adm241ljrs 0c to 70c 28-lead ssop rs-28 adm241ljrs-reel 0c to 70c 28-lead ssop rs-28 adm241lars C40c to +85c 28-lead ssop rs-28 adm241lars-reel C40c to +85c 28-lead ssop rs-28 1 z = pb-free part.
adm231lCadm234l/adm236lCadm241l rev. c | page 19 of 20 notes
adm231lCadm234l/adm236lCadm241l rev. c | page 20 of 20 notes ? 2005 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. c00070C0C4/05(c)
| ?Z | cc ?? purchase | view cart | samples | sales & distributors | quality welcome user | log in search parametric search cross-reference search a di home interface rs-232 a dm241l adm241l: low power, +5v cmos rs-232 100kbps transceiver with 4 drivers, 5 receivers, shutdown and enable pins product status production the adm2xx family of line drivers/receivers is intended for all eia-232-e and v.28 communications interfaces, especially in applications where 12 v is not available. the adm223, adm230l, adm235l, adm236l and adm241l feature a low power shutdown mode that reduces power dissipation to less than 5 w, making them ideally suited for battery powered equipment. two receivers remain enabled during ... more data sheet samples, pricing, inventory, purchase quality and reliability information lead(pb)-free data resources & tools technical documentation analog dialogue application notes glossary of ee terms overview product selection guide rarely asked questions solutions bulletins technical articles functional block diagram for adm241l other diagrams | symbols and footprints enter values and click on powerme to find power solutions for this ic. (nominal) for ic being powered available system voltage v operating voltage rail v load current a view interactive product selection table similar products: pricing, packaging & availability print table adm241l model options model status package pins temp. range price rohs? view pcn/pdn samples adm241lar prodn 28 ld soic - wide 28 ind - n material info view pcn contact adi adm241larsz prodn 28 ld ssop 28 ind - y material info view pcn contact adi print | email this pa g e | save to m y analo g download data sheet rev c , 04/2005 (pdf 298kb) (about data sheets) connect with adi specialists features see specifications low power shutdown a receivers active in shutdown (adm223) 30 v receiver input levels latch-up free plug-in upgrade for max223/230-241 plug-in upgrade for ad230?ad241 single 5 v power supply meets all eia-232-e and v.28 specifications 120 kb/s data rate on-board dc-dc converters 9 v output swing with 5 v supply small 1 f capacitors enlarge page 1 of 2 adm241l | low power, +5v cmos rs-232 100kb ps transceiver with 4 drivers, 5 re ... 07-se p -2010 htt p ://www.analo g .com/en/interface/rs-232/adm241l/ p roducts/ p roduct.html
adm241larsz-reel prodn 28 ld ssop 28 ind - y material info view pcn contact adi adm241larz prodn 28 ld soic - wide 28 ind - y material info view pcn contact adi adm241larz-reel prodn 28 ld soic - wide 28 ind - y material info view pcn contact adi adm241ljr prodn 28 ld soic - wide 28 comm. - n material info view pcn contact adi adm241ljrs prodn 28 ld ssop 28 comm. - n material info view pcn contact adi adm241ljrsz prodn 28 ld ssop 28 comm. - y material info view pcn contact adi adm241ljrsz-reel prodn ssop 5.3 mm 28 comm. - y material info view pcn contact adi adm241ljrz prodn 28 ld soic - wide 28 comm. - y material info view pcn contact adi adm241ljrz-reel prodn 28 ld soic - wide 28 comm. - y material info view pcn contact adi back to top *the usa list pricing shown is for budgetary use only, shown in un ited states dollars (fob usa per unit for the stated volume), and is subject to change. international prices may differ due to local duties, taxes, fees and exchange rates. for volume-specific pri ce or delivery quotes, please contact your local analog devices, inc. sales offi ce or authorized distributor. pricing displayed for evaluation boards and kits is based on 1-piece pricing. **when "not recommended" is shown in the product status, it means that the model is still in production, but is not recommended for new design. view sales and distribution offices page 2 of 2 adm241l | low power, +5v cmos rs-232 100kb ps transceiver with 4 drivers, 5 re ... 07-se p -2010 htt p ://www.analo g .com/en/interface/rs-232/adm241l/ p roducts/ p roduct.html

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Price & Availability of ADM238LAR-REEL

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