LT1032CSW#PBF

LT1032 Quad Low Power Line Driver U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO Low Operating Voltage: ±5V to ±15V 500µA Supply Current Zero Supply Current when Shut Down Outputs Can Be Driven ±30V Thermal Limiting Output “Open” when Off (Three-State) 10mA Output Drive Pinout Similar to 1488 U APPLICATIO S ■ ■ ■ ■ RS232 Power Supply Inverter Micropower Interface Level Translator The LT®1032 is a RS232 and RS423 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 both current and thermal limiting. Since the output swings to within 200mV of the positive supply and 600mV of the negative supply, power supply needs are minimized. Also included is a strobe pin to force all outputs low independent of input or shutdown conditions. Further, slew rate can be adjusted with a resistor connected to the supply. A major advantage of the LT1032 is the high impedance output state when off or powered down. For applications requiring dual or triple RS232 driver/ receiver devices, see the LT1180A (dual), LT1039A (triple) or the LT1130A data sheets. , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATIO Output Swing vs Output Current –6V 1 LT1032 14 2 13 3 OUTPUT ON/OFF 4 (0V TO 5V)† 5 INPUT 6 OUTPUT 7 GND 12 INPUT 6V STROBE* INPUT 11 OUTPUT 10 RESPONSE TIME CONTROL* 9 INPUT 8 OUTPUT *NO CONNECTION NEEDED WHEN NOT USED † 5V = ON LT1032 • TA01 OUTPUT VOLTAGE REFERRED TO SUPPLIES (V) RS232 Line Driver V+ 0.2 VOUT HIGH 0.4 VOUT LOW 1.0 0.8 0.6 0.4 0.2 V– 0 2 6 8 4 OUTPUT CURRENT (mA) 10 LT1032 • TA02 1032fe 1 LT1032 W W W AXI U U ABSOLUTE RATI GS (Note 1) Supply Voltage ..................................................... ±15V Logic Input Pins ............................................ V – to 25V ON/OFF Pin ................................................. GND to 15V Output (Forced) ............................. V – + 30V, V + – 30V Response Pin ......................................................... ±6V Short-Circuit Duration (to ±30V) .................... Indefinite Storage Temperature Range ................ – 65°C to 150°C Operating Temperature Range LT1032C ............................................... 0°C to 70°C LT1032I ........................................... – 40°C to 85°C LT1032M ....................................... – 55°C to 125°C C Grade Guaranteed Functional by Design .............................. – 25°C to 85°C Lead Temperature (Soldering, 10 sec)................. 300°C U W U PACKAGE/ORDER I FOR ATIO TOP VIEW VEE (–15V TO –5V) ON/OFF (0V TO 5V) 1 14 2 13 STROBE 3 12 4 11 ORDER PART NUMBER ORDER PART NUMBER (5V TO 15V) 6 RESPONSE 10 CONTROL 9 7 8 5 GND VCC TOP VIEW LT1032CN LT1032IN 2 15 STROBE 3 14 ON/OFF 4 13 12 RESPONSE CONTROL 11 5 6 N PACKAGE 14-LEAD PDIP TJMAX = 150°C, θJA = 130°C/W CN) J PACKAGE 14-LEAD CERDIP TJMAX = 150°C, θJA = 95°C/W (CJ) TJMAX = 150°C, θJA = 95°C/W (MJ) LT1032CJ LT1032MJ LT1032CSW LT1032ISW 16 VCC VEE 1 GND 7 10 NC 8 9 NC SW PACKAGE 16-LEAD PLASTIC SO (WIDE) TJMAX = 150°C, θJA = 90°C/W OBSOLETE PACKAGE Consider the N Package as an Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Supply voltage = ±5V to ±15V PARAMETER CONDITIONS Supply Current Power Supply Leakage Current VON/OFF ≥ 2.4V, IOUT = 0, All Outputs Low VON/OFF ≤ 0.4V VON/OFF ≤ 0.1V, TA = 125°C Load = 2mA Positive Negative VSUPPLY = ±5V to ±15V VSUPPLY = 0V, VOUT = ±30V VSUPPLY = ±15V, VOUT = ±20V Operating or Shutdown Operating of Shutdown Low Input (VOUT = High) High Input (VOUT = Low) VIN > 2.0V VIN < 0.8V 0 ≤ VIN ≤ 5V IRESPONSE = 0, RL = 3k Output Voltage Swing Output Current (Active) Output Current (Shutdown) Output Overload Voltage (Forced) Input Overload Voltage (Forced) Logic Input Levels Logic Input Current ON/OFF Pin Current Slew Rate MIN ● ● V + – 0.3V 10 ● V + – 30V V– ● ● 2 ● ● –10 4 TYP MAX UNITS 500 1 10 V + – 0.1V V – + 0.7V 22 2 2 1000 10 50 µA µA µA V V mA µA µA V V V V µA µA µA V/µs 1.4 1.4 2 10 3 15 V – + 0.9V 100 100 V – + 30V 30V 0.8 20 20 50 30 1032fe 2 LT1032 ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Supply voltage = ±5V to ±15V PARAMETER CONDITIONS Change in Slew Rate (Note 3) IRESPONSE = 50µA IRESPONSE = – 50µA VSUPPLY = ±6V, VON/OFF ≤ 0.4V VRESPONSE = ±6V Response Pin Leakage MIN Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: 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. TYP MAX UNITS 50 – 50 1 % % µA Note 3: Response can be changed by connecting a resistor to the supply. For supplies less than ±6V this current is disconnected when shut down. Leave open when not used. U W TYPICAL PERFOR A CE CHARACTERISTICS On Supply Current vs Temperature Supply Current vs Supply Voltage 1000 2.0 3.0 1.8 2.5 VS = ±12V ALL OUTPUTS HIGH ALL OUTPUTS HIGH 2.0 1.5 1.0 1.4 1.2 1.0 0.8 0.6 100 10 ALL OUTPUTS LOW 0.4 ALL OUTPUTS LOW 0.5 SUPPLY CURRENT (nA) 1.6 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) Off Supply Current vs Temperature 0.2 0 –50 –25 50 25 75 0 TEMPERATURE (˚C) 100 1 0 125 5 12.5 10 7.5 SUPPLY VOLTAGE (±V) LT1032 • TPC01 LT1032 • TPC03 RESPONSE PIN LEAKAGE (µA) 1000 10µA OUTPUT CURRENT OUTPUT VOLTAGE REFERRED TO SUPPLIES (V) VOUT HIGH 0.4 0.8 0.6 1µA VOUT = –30V 100nA VOUT = 30V 10nA 0.4 125 Response Pin Leakage vs Temperature (Device Off) 100µA VOUT LOW 100 75 TEMPERATURE (°C) Output Leakage vs Temperature V+ 1.0 50 LT1032 • TPC02 Output Swing vs Output Current 0.2 25 15 100 V = 5V 10 V = –5V 0.2 V– 1 1nA 0 2 6 8 4 OUTPUT CURRENT (mA) 10 LT1032 • TA02 25 50 75 100 TEMPERATURE (°C) 125 25 50 75 100 TEMPERATURE (°C) LT1032 • TPC05 LT1032 • G06 1032fe 3 LT1032 U W TYPICAL PERFOR A CE CHARACTERISTICS Shutdown Pin Voltage vs Temperature ON/OFF Pin Current vs Voltage 4 2 0 –2 70 1.6 MIN ON VOLTAGE OUTPUT CURRENT (mA) ON/OFF PIN VOLTAGE (V) 6 CURRENT (µA) 80 1.8 8 1.4 1.2 1.0 0.8 MAX OFF VOLTAGE 0.6 0.4 –4 –6 Current Limit vs Temperature 2.0 10 1 3 2 INPUT VOLTAGE (V) 4 0 –50 –25 5 SINKING 40 30 SOURCING 20 0 0 – 55 – 25 25 50 75 100 125 150 TEMPERATURE (°C) 0 25 50 75 100 125 150 TEMPERATURE (°C) LT1032 • TPC08 LT1032 • TPC07 Output Swing vs Temperature LT1032 • TPC09 Slew Rate vs Temperature V+ 20 200 IOUT = 2mA 18 400 IOUT = 10mA 16 SLEW RATE (V/µs) OUTPUT VOLTAGE REFERRED TO SUPPLIES (V) 50 10 0.2 0 60 IOUT = –10mA 1 800 IOUT = –2mA 600 14 12 10 8 6 400 4 200 2 V– –50 –25 0 RISING FALLING VS = ±12V RL = 3k CL = 51pF VSLEW = ±8V 0 –50 –25 25 50 75 100 125 150 TEMPERATURE (°C) 50 25 0 75 TEMPERATURE (°C) ON/OFF Response Time ON/OFF Response Time VOUT 2V 0 0 – 2V VOUT – 4V – 6V 5V ON/OFF INPUT 0 VIN = 0V RL = 3k VS = ±6V OUTPUT CL = 51pF HIGH VIN = 5V OUTPUT LOW INPUT 0 200µs 400µs 600µs 125 LT1032 • TPC11 LT1032 • TPC10 6V 4V 100 1ms LT1032 • TPC12 5V/DIV 10V VOUT VIN = 0V 5V 0 VOUT 0 – 5V – 10V ON/OFF INPUT 5V 0 RL = 3k VS = ±12V CL = 51pF OUTPUT HIGH OUTPUT LOW VIN = 5V 0 200µs 400µs 600µs 1ms LT1032 • TPC13 1032fe 4 LT1032 U W TYPICAL PERFOR A CE CHARACTERISTICS Output Waveform Output Waveform RL = 3k CL = 51pF 50V VOUT 0 – 5V VOUT 4V 2V 0 – 2V – 4V LOGIC INPUT 5V 0 10V VS = ±12V 0 VOUT – 10V LOGIC INPUT 5V 0 0 2µs 4µs 8µs 6µs 10µs RL = 450Ω VS = ±5V CL = 51pF 0 4µs 8µs 12µs LT1032 • TPC14 VOUT LOGIC INPUT Strobe Pin Response RL = 3.3k VS = ±6V CL = 0.01µF 4V 2V 0 – 2V – 4V – 6V 20µs LT1032 • TPC15 Output Waveform Driving Capacitive Load 6V 16µs 5V/DIV OUTPUT 0 5V 0 STROBE INPUT 0 10µs 20µs 30µs 40µs 50µs LT1032 • TPC16 5V 0 VIN = 0V RL = 3k VS = ±12V CL = 51pF 0 2µs 4µs 6µs 8µs LT1032 • TPC17 UO U U PI FU CTI S VEE (J, N & S: Pin 1): Minus Supply. Operates –2V to –15V. (J & N: Pins 2, 5, 9, 12/S: Pins 2, 5, 11, 14): Logic Input. Operates properly on TTL or CMOS levels. Output valid form (V – + 2V) ≤ VIN ≤ 15V. Connect to ground when not used. (J & N: Pins 3, 6, 8, 11/S: Pins 3, 6, 10, 13): Output. Line drive output. ON/OFF (J, N & S: Pin 4): Shuts down entire circuit. Cannot be left open. For “normally on” operation, connect to V +. GND (J, N & S: Pin 7): Ground. Ground must be more positive than V –. Response Control (J & N: Pin 10/S: Pin 12): Allows limited change of slew rate. Leave open when not used. Strobe (J & N: Pin 13/ S: Pin 15): Forces all outputs low. Drive with 3V. VCC (J & N:Pin 14/S: Pin 15): Positive Supply. Operates 5V to 15V. 1032fe 5 LT1032 W U U UO APPLICATI S I FOR ATIO Application Hints The LT1032 is exceptionally easy to use when compared to older drivers. Operating supply voltage can be as low as ±3V or as high as ±15V. Input levels are referred to ground. The logic inputs are internally set at TTL levels. Outputs are valid for input voltages from 1V above V – to 25V. Driving the logic inputs to V – turns off the output stage. The ON/OFF control completely turns off all supply current of the LT1032. The levels required to drive the device on or off are set by internal emitter-based voltages. Since the current into the ON/OFF pin is so low, TTL or CMOS drivers have no problem controlling the device. The strobe pin is not fully logic compatible. The impedance of the strobe pin is about 2kΩ to ground. Driving the strobe pin positive forces the output stages low–even if the device is shut off. Under worst case conditions, 3V minimum at 2mA are needed driving the strobe pin to insure strobing. The response pin can be used to make some adjustment in slew rate. A resistor can be connected between the response pin and the power supplies to drive 50µA to 100µA into the pin. The response pin is a low impedance point operating at about 0.75V above ground. For supply voltage up to ±6V, current is turned off when the device is turned off. For higher supply voltages, a Zener should be connected in series with the resistor to limit the voltage applied to the response pin to 6V. Also, for temperatures above 100°C, using the response pin is not recommended. The leakage current into the response pin at high temperatures is excessive. Outputs are well protected against shorts or externally applied voltage. Tested limits are ±30V, but the device can withstand external voltages up to breakdown of the transistors (typically about 50V). The LT1032 is usually immune to ESD up to 2500V on the outputs with no damage. UO TYPICAL APPLICATI S Protecting Against More Than ±30V Output Overload V+ 100Ω TO 1000Ω INPUT 1/4 LT1032 TO LINE INPUT 1/4 LT1032 TO LINE 30V ZENERS LT1032 • TA03b V– LT1032 • TA03a FET Driver Slew Rate Adjustment* 15V 10V † 5V 15V 50k INPUT 80k 1/4 LT1032 LT1032 –15V PIN 10 OR 80k 50µA INCREASES SLEW RATE 50µA DECREASES SLEW RATE OR LT1032 • TA04 120k –5V 120k –15V † 10V *ABOUT 4V/ms CHANGE ZENERS PREVENT LEAKAGE DURING SHUTDOWN LT1032 • TA05 † 1032fe 6 LT1032 UO TYPICAL APPLICATI S TTL/CMOS Compatible Strobe Strobing with CMOS 5V TO LT1032 STROBE TTL INPUT ANY CMOS GATE TTL INPUT TO PIN 13 OF LT1032 10k LT1032 • TA07 LT1032 • TA06 Phase Shift Oscillator R 2 1/4 LT1032CSW 3 R C 5 1/4 LT1032CSW 6 R 9 C 1/4 LT1032CSW 8 R f= 1 3.3RC C LT1032 • TA09 Operating from a Single 5V Supply 5V 1 VEE 40k* CMOS INPUT 15k* 14 VCC 1/4 LT1032CN 4 ON/OFF 12 7 11 OUTPUT 0.7V TO 4.8V GND 1N4148 1N4148 LT1032 • TA10 *LEVEL SHIFTING RESISTORS NEEDED FOR EACH INPUT 1032fe 7 LT1032 W W SI PLIFIED SCHE ATIC LOGIC INPUT V+ OUTPUT R10 2k R9 2k Q13 1 OF 4 DRIVERS R13 2k Q19 Q37 Q9 Q25 Q32 R12 30k Q8 R14 2k Q14 Q24 Q26 R1 50k Q29 Q7 Q18 R4 2k Q33 C2 3pF Q23 Q20 Q1 Q36 Q2 D3 Q17 ON/OFF Q3 Q6 Q12 R5 600Ω Q11 Q5 Q27 Q15 Q16 D2 Q39 Q28 Q30 Q22 Q40 R18 5k Q10 D1 Q4 R6 7.2k R7 21.5k R8 1k R11 120Ω D4 Q34 Q21 GND Q31 C1 10pF R17 7.5k R16 3Ω 2k V – LT1032 • SS RESPONSE TIME ADJ STROBE 1032fe 8 LT1032 U PACKAGE DESCRIPTIO J Package 14-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) 0.005 (0.127) MIN 0.785 (19.939) MAX 14 13 12 11 10 9 8 0.220 – 0.310 (5.588 – 7.874) 0.025 (0.635) RAD TYP 1 2 3 4 5 6 7 0.200 (5.080) MAX 0.300 BSC (0.762 BSC) 0.015 – 0.060 (0.381 – 1.524) 0.008 – 0.018 (0.203 – 0.457) 0° – 15° 0.045 – 0.065 (1.143 – 1.651) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS 0.014 – 0.026 (0.360 – 0.660) 0.100 (2.54) BSC 0.125 (3.175) MIN J14 1298 OBSOLETE PACKAGE 1032fe 9 LT1032 U PACKAGE DESCRIPTIO N Package 14-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) 0.770* (19.558) MAX 14 13 12 11 10 9 8 1 2 3 4 5 6 7 0.255 ± 0.015* (6.477 ± 0.381) 0.130 ± 0.005 (3.302 ± 0.127) 0.300 – 0.325 (7.620 – 8.255) 0.045 – 0.065 (1.143 – 1.651) 0.020 (0.508) MIN 0.065 (1.651) TYP 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 0.005 (0.125) MIN 0.100 (2.54) *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. BSC MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) ( +0.889 8.255 –0.381 ) 0.125 (3.175) MIN 0.018 ± 0.003 (0.457 ± 0.076) N14 1098 1032fe 10 LT1032 U PACKAGE DESCRIPTIO SW Package 16-Lead Plastic Small Outline (Wide .300 Inch) (Reference LTC DWG # 05-08-1620) 0.398 – 0.413* (10.109 – 10.490) 16 15 14 13 12 11 10 9 0.394 – 0.419 (10.007 – 10.643) NOTE 1 1 0.291 – 0.299** (7.391 – 7.595) 2 3 4 5 6 7 0.093 – 0.104 (2.362 – 2.642) 0.010 – 0.029 × 45° (0.254 – 0.737) 8 0.037 – 0.045 (0.940 – 1.143) 0° – 8° TYP 0.009 – 0.013 (0.229 – 0.330) NOTE 1 0.016 – 0.050 (0.406 – 1.270) 0.050 (1.270) BSC 0.004 – 0.012 (0.102 – 0.305) 0.014 – 0.019 (0.356 – 0.482) TYP 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 S16 (WIDE) 1098 *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 1032fe 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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 11 LT1032 U TYPICAL APPLICATION ±5V to ±15V Voltage Multiplier 5V 14 LT1032 2 3 5 6 1N4148 470µF 1N4148 VOUT 13.7V AT NO LOAD 12V AT 10mA + + 470µF fCLK = 1kHz 5V 0V 470µF 8 9 1N4148 –VOUT –13.7V AT NO LOAD 470µF –12V AT 10mA + + 11 12 1N4148 1 –5V LT1032 • TA08 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1039A Triple RS232 Driver/Receiver with Shutdown ±15kV ESD Protection LT1130A/LT1140A 5V Supply, Multiple RS232 Driver/Receiver ±15kV 3 Driver/5 Receiver (LT1133A, LT1137A, LT1141A) LT1780/LT1781A 5V Supply, 2 Driver/2 Receiver RS232 ±15kV Pin Compatible Upgrade to LT1080/LT1081 and LT1180A/LT1181A 1032fe 12 Linear Technology Corporation LT/TP 0302 1.5K REV E • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com  LINEAR TECHNOLOGY CORPORATION 1994