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1 lt1130a/lt1140a series advanced low power 5v rs232 drivers/receivers with small capacitors esd protection over 10kv ( 15kv iec-1000-4-2 for lt1133a, lt1137a and lt1141a) uses small capacitors: 0.1 m f, 0.2 m f 1 m a supply current in shutdown 120kbaud operation for r l = 3k, c l = 2500pf 250kbaud operation for r l = 3k, c l = 1000pf cmos comparable low power easy pc layout: flowthrough architecture rugged bipolar design: absolutely no latchup outputs assume a high impedance state when offor powered down improved protection: rs232 i/o lines can be forcedto 30v without damage output overvoltage does not force current backinto supplies available in so and ssop packages the lt 1130a/lt1140a series of rs232 drivers/receiv- ers features special bipolar construction techniques whichprotect the drivers and receivers beyond the fault condi- tions stipulated for rs232. driver outputs and receiver inputs can be shorted to 30v without damaging the device or the power supply generator. in addition, thers232 i/o pins are resilient to multiple 10kv esd strikes. an advanced driver output stage operates up to 250kbaudwhile driving heavy capacitive loads. supply current is typically 12ma, competitive with cmos devices. several members of the series include flexible operating mode controls. the driver disable pin disables the drivers and the charge pump, the on/off pin shuts down all circuitry. while shut down, the drivers and receivers assume high impedance output states. , ltc and lt are registered trademarks of linear technology corporation. lt1136a 4-driver/5-receiver rs232 transceiver w/shutdownlt1137a 3-driver/5-receiver rs232 transceiver w/shutdown lt1138a 5-driver/3-receiver rs232 transceiver w/shutdown lt1139a 4-driver/4-receiver rs232 transceiver w/shutdown lt1140a 5-driver/3-receiver rs232 transceiver w/o charge pump lt1141a 3-driver/5-receiver rs232 transceiver w/o charge pump lt1130a 5-driver/5-receiver rs232 transceiverlt1131a 5-driver/4-receiver rs232 transceiver w/shutdown lt1132a 5-driver/3-receiver rs232 transceiver lt1133a 3-driver/5-receiver rs232 transceiver lt1134a 4-driver/4-receiver rs232 transceiver lt1135a 5-driver/3-receiver rs232 transceiver w/o charge pump r lt1130a ?ta02 receiver output c l = 50pf driver output r l = 3k c l = 2500pf input 12 3 4 5 6 7 8 9 1011 12 13 14 2827 26 25 24 23 22 21 20 19 18 17 16 15 5v v cc driver out rx in driver out rx inrx in rx in driver out rx in on/off = 5v driver inrx out driver in rx out rx out rx out driver in rx out v + 0.1 m f 0.1 m f 2 0.1 m f 2 0.1 m f gnddriver disable to line to logic v 1130a ?ta01 lt1137a basic operation output waveforms features descriptio u typical applicatio u downloaded from: http:///
2 lt1130a/lt1140a series a u g w a w u w a r b s o lu t ex i t i s (note 1) supply voltage (v cc ) ................................................ 6v v + ........................................................................ 13.2v v (note 7) ....................................................... 13.2v input voltage driver ........................................................... v to v + receiver ............................................... 30v to 30v on/off pin ............................................. 0.3v to 12v driver disable pin ................... 0.3v to (v cc + 0.3v) output voltage driver .................................................... 30v to 30v receiver ................................. 0.3v to (v cc + 0.3v) short-circuit duration v + ................................................................... 30 sec v ................................................................... 30 sec driver output .............................................. indefinite receiver output .......................................... indefinite operating temperature range lt113xac/lt114xac ............................ 0 c to 70 c lt113xai/lt114xai ............................. 40 to 85 c storage temperature range ................ 65 c to 150 c lead temperature (soldering, 10 sec)................. 300 c order part number order part number product selectio table u part number power supply voltages* shutdown driver disable drivers receivers external components lt1130a 5 no no 5 5 4 capacitors lt1131a 5 yes yes 5 4 4 capacitors lt1132a 5 no no 5 3 4 capacitors lt1133a** 5 no no 3 5 4 capacitors lt1134a 5 no no 4 4 4 capacitors lt1135a 5, 12, ?2 no no 5 3 none lt1136a 5 yes yes 4 5 4 capacitors lt1137a** 5 yes yes 3 5 4 capacitors lt1138a 5 yes yes 5 3 4 capacitors lt1139a 5, 12 yes no 4 4 2 capacitors lt1140a 5, 12, ?2 yes yes 5 3 none lt1141a** 5, 12, ?2 yes yes 3 5 none *the lt1130a, lt1131a, lt1132a, lt1134a, lt1136a, lt1137a and lt1138a can operate with 5v and 12v supplies and two external capacitors. **meets 15kv esd air gap discharge and 8kv contact methods per iec-1000-4-2. wu u package / o rder i for atio 12 3 4 5 6 7 8 9 1011 12 13 14 top view 2827 26 25 24 23 22 21 20 19 18 17 16 15 v + 5v v cc c1 + c1 driver out rx in driver out rx in driver out rx in driver out rx in driver out rx in v c2 c2 + driver inrx out driver in rx out driver in rx out driver in rx out driver in rx out gnd sw package 28-lead plastic so wide nw package 28-lead pdip lt1130a 5-driver/5-receiver lt1130acnwlt1130acsw lt1130aisw t jmax = 150 c, q ja = 56 c/w (nw) t jmax = 150 c, q ja = 68 c/w (sw) 12 3 4 5 6 7 8 9 1011 12 13 14 top view 2827 26 25 24 23 22 21 20 19 18 17 16 15 v c2 c2 + driver inrx out driver in rx out driver in rx out driver in rx out driver in gnd driver disable sw package 28-lead plastic so wide nw package 28-lead pdip lt1131a v + 5v v cc c1 + c1 driver out rx in driver out rx in driver out rx in driver out rx in driver out on/off t jmax = 150 c, q ja = 56 c/w (nw) t jmax = 150 c, q ja = 68 c/w (sw) 5-driver/4-receiver with shutdown lt1131acnwlt1131acsw downloaded from: http:///
3 lt1130a/lt1140a series wu u package / o rder i for atio order part number 5-driver/3-receiver without charge pump 4-driver/4-receiver order part number order part number order part number order part number 3-driver/5-receiver t jmax = 150 c, q ja = 58 c/w (n) t jmax = 150 c, q ja = 80 c/w (sw) t jmax = 150 c, q ja = 58 c/w (n) t jmax = 150 c, q ja = 80 c/w (sw) t jmax = 150 c, q ja = 79 c/w (n) t jmax = 150 c, q ja = 85 c/w (sw) t jmax = 150 c, q ja = 56 c/w (nw) t jmax = 150 c, q ja = 68 c/w (sw) t jmax = 150 c, q ja = 96 c/w (g) t jmax = 150 c, q ja = 56 c/w (nw) t jmax = 150 c, q ja = 68 c/w (sw) 12 3 4 5 6 7 8 9 1011 12 top view 2423 22 21 20 19 18 17 16 15 14 13 v c2 c2 + driver inrx out driver in rx out driver in rx out driver in rx out gnd sw package 24-lead plastic so wide n package 24-lead pdip lt1134a v + 5v v cc c1 + c1 driver out rx in driver out rx in driver out rx in driver out rx in 12 3 4 5 6 7 8 9 1011 12 13 14 top view 2827 26 25 24 23 22 21 20 19 18 17 16 15 v c2 c2 + driver inrx out driver in rx out driver in rx out driver in rx out rx out gnd driver disable sw package 28-lead plastic so wide nw package 28-lead pdip lt1136a v + 5v v cc c1 + c1 driver out rx in driver out rx in driver out rx in driver out rx inrx in on/off 12 3 4 5 6 7 8 9 1011 12 top view 2423 22 21 20 19 18 17 16 15 14 13 v c2 c2 + driver indriver in rx out driver in driver in rx out driver in rx out gnd sw package 24-lead plastic so wide n package 24-lead pdip lt1132a v + 5v v cc c1 + c1 driver outdriver out rx in driver outdriver out rx in driver out rx in lt1132acnlt1132acsw lt1132aisw t jmax = 150 c, q ja = 58 c/w (n) t jmax = 150 c, q ja = 80 c/w (sw) 12 3 4 5 6 7 8 9 1011 12 top view 2423 22 21 20 19 18 17 16 15 14 13 v c2 c2 + driver inrx out driver in rx out rx out rx out driver in rx out gnd sw package 24-lead plastic so wide n package 24-lead pdip lt1133a v + 5v v cc c1 + c1 driver out rx in driver out rx inrx in rx in driver out rx in lt1133acnlt1133acsw lt1133aisw order part number 5-driver/3-receiver 12 3 4 5 6 7 8 9 10 top view 2019 18 17 16 15 14 13 12 11 12v v driver indriver in rx out driver in driver in rx out driver in rx out gnd sw package 20-lead plastic so wide n package 20-lead pdip 12v v + 5v v cc driver outdriver out rx in driver outdriver out rx in driver out rx in lt1135a lt1134acnlt1134acsw lt1134ain lt1134aisw lt1135acnlt1135acsw lt1137acglt1137acnw lt1137acsw lt1137aig lt1137ainw lt1137aisw 3-driver/5-receiver with shutdown 4-driver/5-receiver with shutdown lt1136acnwlt1136acsw 12 3 4 5 6 7 8 9 1011 12 13 14 top view 2827 26 25 24 23 22 21 20 19 18 17 16 15 v c2 c2 + driver inrx out driver in rx out rx out rx out driver in rx out gnd driver disable nc sw package 28-lead plastic so wide nw package 28-lead pdip lt1137a v + 5v v cc c1 + c1 driver out rx in driver out rx inrx in rx in driver out rx in on/off nc g package 28-lead plastic ssop downloaded from: http:///
4 lt1130a/lt1140a series the denotes the specifications which apply over the full operating e lectr ic al c c hara terist ics order part number wu u package / o rder i for atio 5-driver/3-receiver with shutdown t jmax = 150 c, q ja = 96 c/w (g) t jmax = 150 c, q ja = 56 c/w (nw) t jmax = 150 c, q ja = 68 c/w (sw) 5-driver/3-receiver with shutdown without charge pump consult factory for industrial and military grade parts. 12 3 4 5 6 7 8 9 1011 12 13 14 top view 2827 26 25 24 23 22 21 20 19 18 17 16 15 v c2 c2 + driver indriver in rx out driver in rx out driver in rx out driver in gnd driver disable nc sw package 28-lead plastic so wide nw package 28-lead pdip lt1138a v + 5v v cc c1 + c1 driver outdriver out rx in driver out rx in driver out rx in driver out on/off nc g package 28-lead plastic ssop lt1138acglt1138acnw lt1138acsw lt1138aig t jmax = 150 c, q ja = 58 c/w (n) t jmax = 150 c, q ja = 80 c/w (sw) 12 3 4 5 6 7 8 9 1011 12 top view 2423 22 21 20 19 18 17 16 15 14 13 v c c + driver inrx out driver in rx out driver in rx out driver in rx out gnd sw package 24-lead plastic so wide n package 24-lead pdip lt1139a n.c. 5v v cc 12v input driver out rx in driver out rx in driver out rx in driver out rx in on/off lt1139acnlt1139acsw 4-driver/4-receiver with shutdown with 12v and 5v supplies order part number order part number order part number lt1140acnlt1140acsw t jmax = 150 c, q ja = 58 c/w (n) t jmax = 150 c, q ja = 80 c/w (sw) 12 3 4 5 6 7 8 9 1011 12 top view 2423 22 21 20 19 18 17 16 15 14 13 12v v n.c.driver in driver in rx out driver in driver in rx out driver in rx out gnd driver disable sw package 24-lead plastic so wide n package 24-lead pdip lt1140a 12v v + 5v v cc n.c. driver outdriver out rx in driver outdriver out rx in driver out rx in on/off 3-driver/5-receiver with shutdown without charge pump 12 3 4 5 6 7 8 9 1011 12 top view 2423 22 21 20 19 18 17 16 15 14 13 12v v n.c.rx out driver in rx out driver in rx out driver in rx out rx out gnd driver disable sw package 24-lead plastic so wide n package 24-lead pdip lt1141a 12v v + 5v v cc n.c. rx in driver out rx in driver out rx in driver out rx inrx in on/off lt1141acnlt1141acsw t jmax = 150 c, q ja = 58 c/w (n) t jmax = 150 c, q ja = 80 c/w (sw) temperature range, otherwise specifications are at t a = 25 c. (note 2) parameter conditions min typ max units power supply generator v + output 8.6 v v output 7.8 v 5v v cc supply current: lt1130a, lt1131a, lt1132a, (note 3) 15 25 ma lt1133a, lt1134a, lt1136a, lt1138a 5v v cc supply current: lt1135a, lt1140a, lt1141a (note 3), v + = 12v, v = ?2v 81 5 m a 5v v cc supply current: lt1137a (note 3) 12 17 ma 5v v cc supply current: lt1139a (note 3), v + = 12v 81 5 m a 12v v + supply current: lt1135a, lt1140a, lt1141a (note 3), v = 12v 14 m a 12v v + supply current: lt1139a (note 3) 61 0 m a 12v v supply current: lt1135a, lt1140a, lt1141a (note 3) v + = 12v 26 m a downloaded from: http:///
5 lt1130a/lt1140a series e lectr ic al c c hara terist ics parameter conditions min typ max units supply current when off (v cc ) shutdown (note 4) 11 0 m a driver disable 4 ma supply rise time c1, c2, c + , c = 1.0 m f 2.0 ms shutdown to turn-on c + , c = 0.1 m f, c1, c2 = 0.2 m f 0.2 ms on/off pin thresholds input low level (device shut down) 1.4 0.8 v input high level (device enabled) 2.4 1.4 v on/off pin current 0v v on/off 5v ?5 80 m a driver disable pin thresholds input low level (drivers enabled) 1.4 0.8 v input high level (drivers disabled) 2.4 1.4 v driver disable pin current 0v v driver disable 5v 10 500 m a oscillator frequency 130 khz any driver output voltage swing load = 3k to gnd positive 5 7.3 v negative 6.5 5 v logic input voltage level input low level (v out = high) 1.4 0.8 v input high level (v out = low) 2 1.4 v logic input current 0.8v v in 2v 52 0 m a output short-circuit current v out = 0v 9 17 ma output leakage current shutdown v out = 30v (note 4) 10 100 m a data rate r l = 3k, c l = 2500pf 120 kbaud r l = 3k, c l = 1000pf 250 kbaud slew rate r l = 3k, c l = 51pf 15 30 v/ m s r l = 3k, c l = 2500pf (note 8) 6 v/ m s propagation delay output transition t hl high to low (note 5) 0.6 1.3 m s output transition t lh low to high 0.5 1.3 m s any receiver input voltage thresholds input low threshold (v out = high) 0.8 1.3 v input high threshold (v out = low) 1.7 2.4 v hysteresis 0.1 0.4 1 v input resistance 10v < v in < 10v 3 5 7 k w output voltage output low, i out = 1.6ma 0.2 0.4 v output high, i out = 160 m a (v cc = 5v) 3.5 4.2 v output leakage current shutdown (note 4) 0 v out v cc 11 0 m a output short-circuit current sinking current, v out = v cc ?0 ?0 ma sourcing current, v out = 0v 10 20 ma propagation delay output transition t hl high to low (note 6) 250 600 ns output transition t lh low to high 350 600 ns note 1: absolute maximum ratings are those values beyond which the life of the device may be impaired.note 2: testing done at v cc = 5v and v on/off = 3v. note 3: supply current is measured with driver and receiver outputs unloaded and the driver inputs tied high.note 4: supply current and driver leakage current measurements in shut- down are performed with v on/off = 0.1v. supply current measurements using driver disable are performed with v driver disable = 3v. for lt1135, lt1139, lt1140 and lt1141 with 12v supplies, v out leakage is 200 m a for v out forced to 25v. note 5: for driver delay measurements, r l = 3k and c l = 51pf. trigger points are set between the driver? input logic threshold and the outputtransition to the zero crossing (t hl = 1.4v to 0v and t lh = 1.4v to 0v). note 6: f or receiver delay measurements, c l = 51pf. trigger points are set between the receiver? input logic threshold and the outputtransition to standard ttl/cmos logic threshold (t hl = 1.3v to 2.4v and t lh = 1.7v to 0.8v). note 7: for lt1133a/lt1137a, absolute maximum externally applied v = 6.5v. internal charge pump will drive this pin to a higher nega- tive voltage.note 8: for lt1137a, 4v/ m s minimum. the denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c. (note 2) downloaded from: http:///
6 lt1130a/lt1140a series cc hara terist ics uw a t y p i ca lper f o r c e driver output voltage driver disable threshold supply current in shutdown on/off thresholds supply current driver leakage in shutdown supply current vs data rate receiver input thresholds temperature (?) ?5 0.1 supply current ( m a) 1 10 100 25 0 25 50 lt1137a ?tpc04 75 100 125 temperature (?) ?5 threshold voltage (v) 2.0 2.5 3.0 25 75 lt1137a ? tpc06 1.5 1.0 ?5 0 50 100 125 0.5 0 temperature (?) ?5 threshold voltage (v) 2.0 2.5 3.0 25 75 lt1137a ? tpc07 1.5 1.0 ?5 0 50 100 125 0.5 0 on threshold off threshold temperature (?) ?5 0 supply current (ma) 2 5 0 50 75 lt1137a ?tpc05 1 4 3 ?5 25 100 125 temperature (?) ?5 0.50 threshold voltage (v) 0.75 1.25 1.50 1.75 3.002.25 0 50 75 lt1137a ?tpc02 1.00 2.50 2.75 2.00 ?5 25 100 125 input high input low temperature (?) ?5 ?0 driver output voltage (v) ? ? ? 0 10 4 0 50 75 lt1130a ?tpc01 ? 6 8 2 ?5 25 100 125 output high output low r l = 3k v cc = 5v v cc = 4.5v v cc = 5.5v v cc = 4.5v v cc = 5v v cc = 5.5v data rate (kbaud) 0 0 supply current (ma) 20 30 40 50 60 70 25 50 75 100 lt1130a ?tpc03 125 80 90 100 10 150 5 driver r l = 3k c l = 2500pf 3 driverr l = 3k c l = 2500pf temperature (?) ?5 0 supply current (ma) 5 15 20 25 5035 0 50 75 lt1130a ?tpc08 10 40 45 30 ?5 25 100 125 5 driver 3 driver 1 driver no load supply current in driver disable temperature (?) 0.1 leakage current ( m a) 10 100 lt1137a ? tpc09 1 ?5 0 50 75 ?5 25 100 125 v out = 30v v out = 30v downloaded from: http:///
7 lt1130a/lt1140a series cc hara terist ics uw a t y p i ca lper f o r c e shutdown to driver output receiver short-circuit current driver short-circuit current driver output waveforms lt1137a ?tpc12 10 50 ?0 ? driver output r l = 3k c l = 2500pf input driver output r l = 3k pi fu ctio s u uu v cc : 5v input supply pin. supply current drops to zero in the shutdown mode. this pin should be decoupled with a0.1 m f ceramic capacitor close to the package pin. insuffi- cient supply bypassing can result in low output drive levelsand erratic charge pump operation. gnd: ground pin. on/off: control the operation mode of the device and is ttl/cmos compatible. a logic low puts the device in theshutdown mode which reduces input supply curent to zero and places all of the drivers and receivers in high imped- ance state. a logic high fully enables the transceiver. driver disable: this pin provides an alternate control for the charge pump and rs232 drivers. a logic high onthis pin shuts down the charge pump and places all drivers in a high impedance state. receivers remain active underthese conditions. floating the driver disable pin or driving it to a logic low level fully enables the transceiver. a logic low on the on/off pin supersedes the state of the driver disable pin. supply current drops to 4ma when in driver disable mode. v + : positive supply output (rs232 drivers). v + ? 2v cc 1.5v. this pin requires an external charge storage capaci-tor c 3 1.0 m f, tied to ground or v cc . larger value capaci- tors may be used to reduce supply ripple. with multiple transceivers, the v + and v pins may be paralleled into common capacitors. for large numbers of transceivers,increasing the size of the shared common storage capaci- tors is recommended to reduce ripple. temperature (?) ?5 short-circuit current (ma) 20 25 30 25 75 lt1137a ? tpc10 15 10 ?5 0 50 100 125 5 0 isc + isc temperature (?) ?5 0 short-circuit current (ma) 20 50 0 50 75 lt1137a ?tpc11 10 40 30 ?5 25 100 125 isc + isc lt1137a ?tpc13 driver output high r l = 3k on/off pin driver output low r l = 3k downloaded from: http:///
8 lt1130a/lt1140a series pi fu ctio s u uu v : negative supply output (rs232 drivers). v ? (2v cc ?2.5v). this pin requires an external charge storagecapacitor c 3 0.1 m f. v is short-circuit proof for 30 seconds.c1 + , c1 , c2 + , c2 : commutating capacitor inputs. these pins require two external capacitors c 3 0.2 m f: one from c1 + to c1 , and another from c2 + to c2 . to maintain charge pump efficiency, the capacitor? effectiveseries resistance should be less than 2 w . for c 3 1 m f, low esr tantalum capacitors work well in this application,although small value ceramic capacitors may be used with a minimal reduction in charge pump compliance. in applications where larger positive voltages are available, such as 12v, c1 may be omitted and the positive voltage may be connected directly to the c1 + pin. in this mode of operation, the v + pin should be decoupled with a 0.1 m f ceramic capacitor. driver in: rs232 driver input pins. these inputs are ttl/cmos compatible. inputs should not be allowed tofloat. tie unused inputs to v cc . driver out: driver outputs at rs232 voltage levels. driver output swing meets rs232 levels for loads up to 3k. slew rates are controlled for lightly loaded lines. outputcurrent capability is sufficient for load conditions up to 2500pf. outputs are in a high impedance state when in shutdown mode, v cc = 0v, or when the driver disable pin is active. outputs are fully short-circuit protected fromv + 30v to v + ?30v. applying higher voltages will not damage the device if the overdrive is moderately currentlimited. short circuits on one output can load the power supply generator and may disrupt the signal levels of the other outputs. the driver outputs are protected against esd to 10kv for human body model discharges. rx in: receiver inputs. these pins accept rs232 level signals ( 30v) into a protected 5k terminating resistor. the receiver inputs are protected against esd to 10kv for human body model discharges. each receiver provides0.4v of hysteresis for noise immunity. open receiver inputs assume a logic low state. rx out: receiver outputs with ttl/cmos voltage lev- els. outputs are in a high impedance state when in shut-down mode to allow data line sharing. outputs are fully short-circuit protected to ground or v cc with the power on, off, or in shutdown mode. esd protectio u the rs232 line inputs of the lt1130a/lt1140a series ofrs232 driver/receivers have on-chip protection from esd transients up to 10kv. the protection structures act to divert the static discharge safely to system ground. inorder for the esd protection to function effectively, the power supply and ground pins of the lt1130a/lt1140a must be connected to ground through low impedances. the power supply decoupling capacitors and charge pump storage capacitors provide this low impedance in normal application of the circuit. the only constraint is that low esr capacitors must be used for bypassing and charge storage. esd testing must be done with pins v cc , v + , v and gnd shorted to ground or connected with low esr capacitors.the esd protection on the lt1133a, lt1137a and lt1141a meets 15kv air gap discharge and 8kv con- tact methods per iec-1000-4-2. lt1130a ? esd tc 5v v cc 0.1 m f 0.2 m f 0.1 m f rs232 line pins protected to 15kv lt1137a 12 3 4 5 6 7 8 9 1011 12 13 14 driver 1 out rx1 in driver 2 out rx2 inrx3 in rx4 in driver 3 out rx5 in on/off 2827 26 25 24 23 22 21 20 19 18 17 16 15 0.2 m f driver 1 inrx1 out driver 2 in rx2 out rx3 out rx4 out driver 3 in rx5 out v v + 0.1 m f gnddriver disable + + esd test circuit downloaded from: http:///
9 lt1130a/lt1140a series typical applicatio s u operation using 5v and 12v power supplies typical mouse driving application lt1130a ? ta03 5v v cc 12v v + 0.1 m f to line lt1137a 12 3 4 5 6 7 8 9 1011 12 13 14 driver out rx in driver out rx inrx in rx in driver out rx in on/0ff = 5v 2827 26 25 24 23 22 21 20 19 18 17 16 15 0.1 m f 2 driver inrx out driver in rx out rx out rx out driver in rx out to logic v v cc c1 c1 + 0.01 m f 0.01 m f gnd driver disable v + lt1130a ?ta04 5v v cc 0.1 m f 0.1 m f 2 0.1 m f db9 lt1137a 12 3 4 5 6 7 8 9 1011 12 13 14 driver 1 out rx1 in driver 2 out rx2 inrx3 in rx4 in driver 3 out rx5 in on/off 2827 26 25 24 23 22 21 20 19 18 17 16 15 0.1 m f 2 driver 1 inrx1 out driver 2 in rx2 out rx3 out rx4 out driver 3 in rx5 out gnd driver disable mouse v v + logic ? logic ? mouse data logic ? dcddsr rx rts tx cts dtr ri (1) (9) (5) logic optics v + v downloaded from: http:///
10 lt1130a/lt1140a series dimensions in inches (millimeters) unless otherwise noted. package descriptio u g package 28-lead plastic ssop (0.209) (ltc dwg # 05-08-1640) g28 ssop 0694 0.005 ?0.009 (0.13 ?0.22) 0 ?8 0.022 ?0.037 (0.55 ?0.95) 0.205 ?0.212** (5.20 ?5.38) 0.301 ?0.311 (7.65 ?7.90) 1234 5 6 7 8 9 10 11 12 1413 0.397 ?0.407* (10.07 ?10.33) 2526 22 21 20 19 18 17 16 15 2324 2728 0.068 ?0.078 (1.73 ?1.99) 0.002 ?0.008 (0.05 ?0.21) 0.0256 (0.65) bsc 0.010 ?0.015 (0.25 ?0.38) dimensions do not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per side dimensions do not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** n package 20-lead pdip (narrow 0.300) (ltc dwg # 05-08-1510) n20 1197 0.020 (0.508) min 0.125 (3.175) min 0.130 0.005 (3.302 0.127) 0.065 (1.651) typ 0.045 ?0.065 (1.143 ?1.651) 0.018 0.003 (0.457 0.076) 0.005 (0.127) min 0.100 0.010 (2.540 0.254) 0.009 ?0.015 (0.229 ?0.381) 0.300 ?0.325 (7.620 ?8.255) 0.325 +0.035 0.015 +0.889 0.381 8.255 () 0.255 0.015* (6.477 0.381) 1.040* (26.416) max 12 3 4 5 6 7 8 910 19 11 12 13 14 16 15 17 18 20 *these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.010 inch (0.254mm) n package 24-lead pdip (narrow 0.300) (ltc dwg # 05-08-1510) n24 1197 0.255 0.015* (6.477 0.381) 1.265* (32.131) max 12 3 4 5 6 7 8910 19 11 12 13 14 16 15 17 18 20 21 22 23 24 0.020 (0.508) min 0.125 (3.175) min 0.130 0.005 (3.302 0.127) 0.065 (1.651) typ 0.045 ?0.065 (1.143 ?1.651) 0.018 0.003 (0.457 0.076) 0.100 0.010 (2.540 0.254) 0.009 ?0.015 (0.229 ?0.381) 0.300 ?0.325 (7.620 ?8.255) 0.325 +0.035 0.015 +0.889 0.381 8.255 () *these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.010 inch (0.254mm) downloaded from: http:///
11 lt1130a/lt1140a series package descriptio u dimensions in inches (millimeters) unless otherwise noted. nw package 28-lead pdip (wide 0.600) (ltc dwg # 05-08-1520) information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no represen-tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. s24 (wide) 0996 note 1 0.598 ?0.614* (15.190 ?15.600) 22 21 20 19 18 17 16 15 1 23 4 5 6 78 0.394 ?0.419 (10.007 ?10.643) 910 13 14 11 12 23 24 0.037 ?0.045 (0.940 ?1.143) 0.004 ?0.012 (0.102 ?0.305) 0.093 ?0.104 (2.362 ?2.642) 0.050 (1.270) typ 0.014 ?0.019 (0.356 ?0.482) typ 0 ?8 typ note 1 0.009 ?0.013 (0.229 ?0.330) 0.016 ?0.050 (0.406 ?1.270) 0.291 ?0.299** (7.391 ?7.595) 45 0.010 ?0.029 (0.254 ?0.737) note:1. pin 1 ident, notch on top and cavities on the bottom of packages are the manufacturing options. the part may be supplied with or without any of the options dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per sidedimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** n28 1197 0.505 ?0.560* (12.827 ?14.224) 1.455* (36.957) max 12 3 4 5 6 7 8 9 10 27 19 20 21 22 24 23 25 26 28 11 12 13 14 15 16 17 18 0.070 (1.778) typ 0.015 (0.381) min 0.125 (3.175) min 0.150 0.005 (3.810 0.127) 0.018 0.003 (0.457 0.076) 0.035 ?0.080 (0.889 ?2.032) 0.100 0.010 (2.540 0.254) 0.045 ?0.065 (1.143 ?1.651) 0.009 ?0.015 (0.229 ?0.381) 0.625 +0.035 0.015 +0.889 0.381 15.87 () 0.600 ?0.625 (15.240 ?15.875) *these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.010 inch (0.254mm) sw package 24-lead plastic small outline (wide 0.300) (ltc dwg # 05-08-1620) sw package 20-lead plastic small outline (wide 0.300) (ltc dwg # 05-08-1620) s20 (wide) 0396 note 1 0.496 ?0.512* (12.598 ?13.005) 20 19 18 17 16 15 14 13 1 23 4 5 6 78 0.394 ?0.419 (10.007 ?10.643) 910 11 12 0.037 ?0.045 (0.940 ?1.143) 0.004 ?0.012 (0.102 ?0.305) 0.093 ?0.104 (2.362 ?2.642) 0.050 (1.270) typ 0.014 ?0.019 (0.356 ?0.482) typ 0 ?8 typ note 1 0.009 ?0.013 (0.229 ?0.330) 0.016 ?0.050 (0.406 ?1.270) 0.291 ?0.299** (7.391 ?7.595) 45 0.010 ?0.029 (0.254 ?0.737) note:1. pin 1 ident, notch on top and cavities on the bottom of packages are the manufacturing options. the part may be supplied with or without any of the options dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per sidedimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** downloaded from: http:///
12 lt1130a/lt1140a series dimensions in inches (millimeters) unless otherwise noted. ? linear technology corporation 1993 1130asfb lt/tp 0799 2k rev b ? printed in usa package descriptio u linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax: (408) 434-0507 telex: 499-3977 www.linear-tech.com 5v v cc 1 m f 1 m f to rs232 line lt1133a 12 3 4 5 6 7 8 9 1011 12 driver out rx in driver out rx inrx in rx in driver out rx in 2423 22 21 20 19 18 17 16 15 14 13 1 m f driver inrx out driver in rx out rx out rx out driver in rx out v v + gnd c1 + c1 c2 c2 + tologic to rs232 line lt1130a ?ta05 lt1141a 12 3 4 5 6 7 8 9 1011 12 5v v cc nc rx in driver out rx in driver out rx in driver out rx inrx in on/off 2423 22 21 20 19 18 17 16 15 14 13 ncrx out driver in rx out driver in rx out driver in rx out rx out driver disable v v + tologic 1 m f gnd + + + + related parts part number description comments lt1180a/lt1181a 2-driver/2-receiver rs232 transceivers single 5v supply with 0.1 m f capacitors lt1237 3-driver/5-receiver rs232 transceiver lower power upgrade for lt1137a ltc1327 3-driver/5-receiver rs562 transceiver 3.3v operation ltc1337 3-driver/5-receiver rs232 transceiver ultralow power for dte applications ltc1338 5-driver/3-receiver rs232 transceiver ultralow power for dce applications ltc1348 3-driver/5-receiver rs232 transceiver 3.3v to 5v operation typical applicatio n u sharing power supply generator with a second transceiver 0.037 ?0.045 (0.940 ?1.143) 0.004 ?0.012 (0.102 ?0.305) 0.093 ?0.104 (2.362 ?2.642) 0.050 (1.270) typ 0.014 ?0.019 (0.356 ?0.482) typ s28 (wide) 0996 note 1 0.697 ?0.712* (17.70 ?18.08) 1 23 4 5 6 78 0.394 ?0.419 (10.007 ?10.643) 910 2526 11 12 22 21 20 19 18 17 16 15 2324 1413 2728 0 ?8 typ note 1 0.009 ?0.013 (0.229 ?0.330) 0.016 ?0.050 (0.406 ?1.270) 0.291 ?0.299** (7.391 ?7.595) 45 0.010 ?0.029 (0.254 ?0.737) note:1. pin 1 ident, notch on top and cavities on the bottom of packages are the manufacturing options. the part may be supplied with or without any of the options dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per sidedimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** sw package 28-lead plastic small outline (wide 0.300) (ltc dwg # 05-08-1620) downloaded from: http:///

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