1 lt1030 low operating voltage 5v to 15v supply current: 500 a zero supply current when shut down outputs can be driven 30v output ?pen?when off (three-state) output drive: 10ma pinout similar to 1488* output of several devices can be paralleled the lt 1030 is an rs232 line driver that operates over a 5v to 15v range on low supply current and can be shut down to zero supply current. outputs are fully protected from externally applied voltages of 30v by current limit- ing. since the output swings to within 200mv of the positive supply and 1v of the negative supply, power supply needs are minimized. a major advantage of the lt1030 is the high impedance output state when off or powered down, which allows several different drivers on the same bus. our rs232 product line includes other high performance devices. the lt1039 is a triple low power driver/receiver with shutdown that can be powered from a 5v supply. the lt1080 is a 5v powered dual driver/receiver with on-chip 9v power generator and shutdown. quad low power line driver features descriptio n u , ltc and lt are registered trademarks of linear technology corporation. rs232 driver micropower interface level translator applicatio n s u *check compatability (some pins may be different). rs232 line driver output swing vs output current output current (ma) 0 output voltage referred to supplies (v) v + 0.2 0.4 1.2 1.0 0.8 0.6 0.4 0.2 v 4 lt1030 ? ta02 1 2 3 5 output high output low 1 2 3 4 5 6 7 14 13 12 11 10 9 8 ?v input output on/off (0v to 5v) ? input output gnd 6v strobe* input output nc input output *no connection needed when not used ? 5v = on lt1030 ?ta01 lt1030 typical applicatio n u for information purposes only obsolete: contact linear technology for potential replacement
2 lt1030 order part number supply voltage ...................................................... 15v logic input pins ............................................. v to 25v on/off pin .................................................... gnd to 12v output (forced) .............................. v + 30v, v + ?30v short-circuit duration (to 30v) ..................... indefinite operating temperature range commercial ............................................. 0 c to 70 c guaranteed functional by design ....... 25 c to 85 c storage temperature ............................ 65 c to 150 c lead temperature (soldering, 10 sec).................. 300 c absolute m axi m u m ratings w ww u package/order i n for m atio n w u u consult factory for industrial and military grade parts. (supply voltage = 5 to 15v) electrical characteristics parameter conditions min typ max units supply current v on/off 2.4v, i out = 0, all outputs low 500 1000 a power supply leakage current v on/off 0.4v 1 10 a v on/off 0.1v 10 150 a output voltage swing load = 2ma positive v + ?0.3v v + ?0.1v v negative v + 0.9v v + 1.4v v output current v supply 5v to 15v 5 12 ma output overload voltage (forced) operating or shutdown v + ?30v v + 30v v output current shutdown v s = 0v, v out = 30v 2 100 a v s = 15v, v out = 20v 2 100 a input overload voltage (forced) operating or shutdown v 15 v logic input levels low input (v out = high) 1.4 0.8 v high input (v out = low) 2 1.4 v logic input current v in > 2.0v 2 20 a v in < 0.8v 10 20 a on/off pin current 0 v in 5v ?0 30 65 a slew rate 41530v/ s the denotes specifications which apply over the full operating temperature range. note 1: 3v applied to the strobe pin will force all outputs low. strobe pin input impedance is about 2k to ground. leave open when not used. v (pin 1): operates 15v to 2v. logic input (pins 2, 5, 9, 12): operate properly on ttl or cmos levels. output valid from (v ? + 2v) v in 15v. connect to 5v when not used. output (pins 3, 6, 8, 11): line drive outputs. on/off (pin 4): shuts down entire circuit. cannot be left open. for ?ormally on?operation, connect between 5v to 10v. gnd (pin 7): ground must be more positive than v . pi n fu n ctio n s uuu strobe (pin 13): forces all outputs low. drive with 3v. v + (pin 14): positive supply 5v to 15v. note: as with other bipolar ics, forward biasing the substrate diode can cause problems. the lt1030 will draw high current from v + to ground if the v pin is open circuited or pulled above ground. if this is possible, connecting a diode from v to ground will prevent the high current state. any low cost diode can be used. 14 8 17 lt1030 1n4001 lt1030 ?pf01 lt1030cn lt1030cs lt1030cj consult factory t jmax = 125 c, ja = 90 c/ w (n) t jmax = 125 c, ja = 95 c/ w (s) 1 2 3 4 5 6 7 top view n package 14-lead pdip s package 14-lead plastic so 14 13 12 11 10 9 8 v ( 15v to 5v) on/off (0v to 5v) v + (5v to 15v) strobe gnd
3 lt1030 typical perfor m a n ce characteristics u w on supply current vs temperature on supply current vs supply voltage off supply current vs temperature temperature ( c) ?5 supply current (ma) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 ?5 25 50 lt1030 ?tpc01 ?0 0 75 100 125 v supply = 12v all outputs high all outputs low total supply voltage (v) 10 supply current (ma) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 15 20 lt1030 ?tpc02 25 30 all outputs high all outputs low shutdown voltage vs temperature off output leakage vs temperature temperature ( c) 0.1 supply current ( a) 0 100 25 75 100 125 lt1030 ?tpc03 0.01 50 10 v supply = 12v on/off pin current vs voltage temperature ( c) 0.1 output leakage current ( a) 0 100 25 75 100 125 lt1030 ?tpc04 0.01 50 10 v supply = 12v output forced to 25v output forced to 25v on/off pin voltage (v) gnd on/off pin current ( a) lt1030 ?tpc05 510 140 120 100 80 60 40 20 0 ?0 15 temperature ( c) ?5 on/off pin voltage (v) 125 lt1030 ?tpc06 ?5 25 75 100 ?0 0 50 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 gnd max off voltage (i out < 200 a) max off voltage (i out < 20 a) min on voltage r l = 3k slew rate vs temperature current limit vs temperature output swing vs temperature temperature ( c) ?5 5 output current (ma) 10 15 20 25 ?5 25 75 125 lt1332 ?tpc06 30 35 ?0 0 50 100 sinking sourcing temperature ( c) ?5 output voltage refered to supplies (v) v + 0.2 0.4 1.4 1.2 1.0 0.8 0.6 0.4 0.2 v ?5 25 50 lt1030 ?tpc08 ?0 0 75 100 125 i out = 5ma i out = 5ma i out = 1ma i out = 1ma temperature ( c) ?5 slew rate (v/ s) 25 23 21 19 17 15 13 11 9 7 5 ?5 25 50 lt1030 ?tpc09 ?0 0 75 100 125 v s = 12v r l = 3k c l = 51pf v slew = 8v falling rising 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.
4 lt1030 linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7487 (408) 432-1900 fax : (408) 434-0507 telex : 499-3977 lt/gp 0895 2k ? rev b printed in usa ? linear technology corporation 1987 h = 100 s/div output (v in = 0v) output (v in = 5v) h = 2 s/div 5v 0v ?v 10v 0v ?0v 5v 0v output (v s = 6v) input output (v s = 12v) h = 100 s/div 6v 4v 2v 0v 0v ?v ?v ?v 5v 0v output (v in = 0v) output (v in = 5v) on/off input v s = 12v r l = 3k c l = 51pf v s = 6v r l = 3k c l = 51pf r l = 3k c l = 51pf typical perfor m a n ce characteristics u w output waveforms on-off response time on-off response time output waveform driving capacitive load 10v 5v 0v 0v ?v 10v 5v 0v on/off input h = 10 s/div strobe pin response time h = 2 s/div 10v 5v 0v ?v 10v output v s = 6v r l = 3k c l = 0.01 f v in = 5v v s = 6v r l = 3k c l = 0.01 f dimension in inches (millimeters) unless otherwise noted. package descriptio n u part number description comments lt1180a dual 5v rs232 transceiver with shutdown shutdown plus 10kv esd ltc 1321 programmable rs232/rs485 transceiver low supply current, high speed data transmission lt1134a 4-driver/4-receiver rs232 tranceiver single 5v supply, 10kv esd protection, 0.1 f charge pump capacitor ltc1383 micropower dual 5v rs232 transceiver lowest power 2-driver/2-receiver solution related parts output input 6v 4v 2v 0v ?v ?v ?v 5v 0v 5v 0v strobe input n package 14-lead plastic dip n14 0695 0.015 (0.380) min 0.125 (3.175) min 0.130 0.005 (3.302 0.127) 0.045 ?0.065 (1.143 ?1.651) 0.065 (1.651) typ 0.018 0.003 (0.457 0.076) 0.100 0.010 (2.540 0.254) 0.005 (0.125) min 0.255 0.015* (6.477 0.381) 0.770* (19.558) max 3 1 2 4 5 6 7 8 9 10 11 12 13 14 0.009 ?0.015 (0.229 ?0.381) 0.300 ?0.325 (7.620 ?8.255) 0.325 +0.025 0.015 + 0.635 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) 1 2 3 4 0.150 ?0.157** (3.810 ?3.988) 14 13 0.337 ?0.344* (8.560 ?8.738) 0.228 ?0.244 (5.791 ?6.197) 12 11 10 9 5 6 7 8 0.016 ?0.050 0.406 ?1.270 0.010 ?0.020 (0.254 ?0.508) 45 0 ?8 typ 0.008 ?0.010 (0.203 ?0.254) s14 0695 0.053 ?0.069 (1.346 ?1.752) 0.014 ?0.019 (0.355 ?0.483) 0.004 ?0.010 (0.101 ?0.254) 0.050 (1.270) typ dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per side dimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** s package 14-lead plastic so
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