LT1039A/LT1039A-16 Triple RS232 Driver/Receiver with Shutdown Features Description On-Chip ESD Protection: ±15kV Human Body Model ±15kV IEC-1000-4-2 Air Gap Test** ±8kV IEC-1000-4-2 Contact Test n 125kBd Operation with 3kΩ/2500pF Load n 250kBd Operation with 3kΩ/1000pF Load n Outputs Can Be Driven ±30V Without Damage n No Supply Current in Shutdown n Operates from ±5V to ±15V Supplies n Fully Protected Against Overload n Three-State Outputs; Outputs Open When Off n Bipolar Circuit—No Latchup n ±30V Input Range n Triple Driver/Receiver n 30kΩ Input Impedance n Meets All RS232 Specifications n 16-Pin Version—Pin Compatible with MC145406 n Available in SO Package The LTC®1039A is a triple RS232 driver/receiver that includes shutdown. Each receiver will accept up to ±30V input and can drive either TTL or CMOS logic. The RS232 drivers accept TTL logic inputs and output RS232 voltage levels. The outputs are fully protected against overload and can be shorted to ground or up to ±30V without damage to the drivers. Additionally, when the system is shut down or power is off, the outputs are in a high impedance state allowing data line sharing. On-chip ESD protection eliminates the need for external protection devices. n Applications n n n A bias pin allows one receiver to be kept on while the rest of the part is shut down. The LT1039A is also available in the 16-pin version, without shutdown or bias pin functions. For applications requiring operation from a single 5V supply, see the LT1180A/LT1181A and LT1130A data sheets. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. RS232 Interface Terminals Modems Typical Application BIAS* RS232 IN 1 2 V+ LT1039A VCC 18 17 16 3 LOGIC 30k RS232 OUT 50Ω** RS232 IN *BIAS PIN USED 50Ω** TO KEEP THE RS232 OUT RECEIVER ON WHILE IN SHUTDOWN RS232 IN **50Ω RESISTORS MAY BE REQUIRED 50Ω** FOR IEC-1000-4-2 RS232 OUT ESD PROTECTION DEPENDING UPON – 12V PC BOARD AND CONNECTOR LEAD LENGTH 4 15 5 14 LOGIC LOGIC 30k 6 13 7 12 LOGIC LOGIC 30k 11 8 9 V– GND Driver Output Swing 5V ON/OFF LOGIC OUTPUT VOLTAGE REFERRED TO SUPPLIES (V) 12V V+ – 0.4 – 0.8 –1.2 –1.6 – 2.0 10 1039A TA01 1.2 0.8 0.4 V– 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 OUTPUT CURRENT (mA) 1039A TA02 1039afb For more information www.linear.com/1039 1 LT1039A/LT1039A-16 Absolute Maximum Ratings (Note 1) Supply Voltage Driver (V+, V–)...................................................... ±16V Receiver (VCC).........................................................7V Logic Inputs......................................................V– to 25V Receiver Inputs........................................................±30V ON/OFF Input.................................................GND to 12V Driver Outputs................................V– + 30V to V+ – 30V Short-Circuit Duration....................................... Indefinite Operating Temperature Range LT1039AC................................................. 0°C to 70°C LT1039AM (OBSOLETE).................... –55°C to 125°C Storage Temperature Range................... –65°C to 150°C Lead Temperature (Soldering, 10 sec).................... 300°C Pin Configuration TOP VIEW TOP VIEW V+ 1 18 VCC BIAS 2 17 ON/OFF REC1 IN 3 16 REC1 OUT TR1 OUT 4 15 TR1 IN 14 REC2 OUT V+ 1 16 VCC REC1 IN 2 15 REC1 OUT REC2 IN 5 TR1 OUT 3 14 TR1 IN TR2 OUT 6 13 TR2 IN REC2 IN 4 13 REC2 OUT REC3 IN 7 12 REC3 OUT TR2 OUT 5 12 TR2 IN TR3 OUT 8 11 TR3 IN REC3 IN 6 11 REC3 OUT V– 9 10 GND TR3 OUT 7 10 TR3 IN V– 8 9 N PACKAGE SW PACKAGE 18-LEAD PDIP 18-LEAD PLASTIC SO TJMAX = 125°C, qJA = 79°C/W, qJC = 36°C/W (N) TJMAX = 125°C, qJA = 90°C/W, qJC = 26°C/W (SW) GND N PACKAGE SW PACKAGE 16-LEAD PDIP 16-LEAD PLASTIC SO TJMAX = 125°C, qJA = 90°C/W, qJC = 50°C/W (N) TJMAX = 125°C, qJA = 95°C/W, qJC = 27°C/W (SW) J PACKAGE 18-LEAD CERDIP TJMAX = 150°C, qJA = 88°C/W, qJC = 22°C/W (J) OBSOLETE PACKAGE Consider the N Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. Order Information LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT1039ACSW16#PBF LT1039ACSW16#TRPBF LT1039ACSW16 16-Lead Plastic SO (Wide) 0°C to 70°C LT1039ACSW#PBF LT1039ACSW #TRPBF LT1039ACSW 18-Lead Plastic SO (Wide) 0°C to 70°C LT1039ACN16#PBF N/A LT1039ACN16 16-Lead Plastic PDIP 0°C to 70°C LT1039ACN#PBF N/A LT1039ACN 18-Lead Plastic PDIP 0°C to 70°C OBSOLETE PACKAGE LT1039AMJ#PBF LT1039AMJ#TRPBF 18-Lead CERDIP –55°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 2 1039afb For more information www.linear.com/1039 LT1039A/LT1039A-16 Electrical Characteristics The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS Driver V+ = 12V, V– = –12V, VON/OFF = 2.5V (Note 2) Output Voltage Swing Load = 3k to Ground Positive Negative l l Logic Input Voltage Levels Input Low Level (VOUT = High) Input High Level (VOUT = Low) l l Logic Input Current VIN ≥ 2.0V VIN ≥ 0.8V Output Short-Circuit Current Sourcing Current, VOUT = 0V Sinking Current, VOUT = 0V Output Leakage Current Shutdown (Notes 3, 4), VOUT = ±18V, VIN = 0V l l Supply Leakage Current Shutdown (Note 3) Slew Rate RL = 3k, CL = 51pF to 2500pF Supply Current VOUT = Low V+ – 2.0 V+ – 1.3 V– + 1.5 V– + 1.0 2.0 20 –15 4 Prop Delay (tPLH) (tPHL) V V 1.4 1.4 0.8 V V 1 5 20 20 µA µA 30 –30 mA mA 10 200 µA 1 100 µA 15 30 V/µs 1 5 mA 0.6 0.8 1.2 1.2 µs µs Receiver VCC = 5V, VON/OFF = 2.5V (Note 2) l l 0.5 1.3 1.7 2.8 V V Hysteresis l 0.1 0.4 1.0 V Input Resistance l Input Voltage Thresholds Input Low Level (VOUT = High) Input High Level (VOUT = Low) 30 kΩ Output Voltage Output Low, IOUT = –1.6mA Output High, IOUT = 160µA l l 3.5 0.4 4.8 Output Short-Circuit Current Sourcing Current, VOUT = VCC Sinking Current, VOUT = 0V l l –10 15 –30 25 Output Leakage Current Shutdown (Note 2), 0V ≤ VOUT ≤ VCC, VIN = 0V l 1 10 µA Supply Current (Note 5) l 2 5 mA Supply Leakage Current Shutdown (Note 3) l 1 100 µA ON/OFF Pin Current 0V ≤ VON/OFF ≤ 5V l 80 µA 200 300 600 600 ns ns Prop Delay (tPLH) (tPHL) Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: VON/OFF = 5V for LT1039AM grade devices. –15 0.5 V V mA mA Note 3: VON/OFF = 0.4V for –55°C ≤ TA ≤ 100°C and VON/OFF = 0.2V for 100°C ≤ TA ≤ 125°C. Does not apply to LT1039A-16 part. Note 4: For TA ≥ 100°C leakage current is 350µA max. Note 5: Bias pin open on 18-pin version. 1039afb For more information www.linear.com/1039 3 LT1039A/LT1039A-16 Typical Performance Characteristics Driver Output Short-Circuit Current 45 2.75 4.5 2.50 4.0 INPUT VOLTAGE (V) SINKING 30 25 SOURCING 20 15 2.25 1.75 1.50 1.25 10 1.00 5 0.75 50 25 0 75 TEMPERATURE (°C) 100 INPUT HIGH 2.00 INPUT LOW 0.50 –55 –25 125 50 25 0 75 TEMPERATURE (°C) 1039A G01 SUPPLY CURRENT (nA) OUTPUT LEAKAGE CURRENT (µA) 100 OUTPUT VOLTAGE REFERRED TO SUPPLIES (V) 35 30 25 20 15 10 5 0 –5 4 5 1039A G07 4 MINIMUM OFF VOLTAGE 0 –55 –25 125 50 25 0 75 TEMPERATURE (°C) 100 125 1039A G03 Receiver Output Short-Circuit Current 100 VOUT – 30V 10 100 40 35 30 SOURCING 25 20 15 10 VOUT 30V 0 25 50 75 TEMPERATURE (°C) SINKING 45 5 0 –55 –25 125 50 25 0 75 TEMPERATURE (°C) 1039A G05 ON/OFF Pin Current vs Voltage 2 3 INPUT VOLTAGE (V) 1.0 50 1 –55 –25 125 40 1 MINIMUM ON VOLTAGE 1.5 60 1039A G04 0 2.0 55 10 –10 100 1000 100 0 25 50 75 TEMPERATURE (°C) 2.5 Driver Output Leakage in Shutdown SUPPLY CURRENT MEASURED INTO VCC AND V + 1 –55 –25 3.0 1039A G02 Supply Current in Shutdown 1000 3.5 0.5 OUTPUT CURRENT (mA) 35 ON/OFF PIN VOLTAGE (V) 5.0 0 –55 –25 INPUT CURRENT (µA) ON/OFF Pin Thresholds 3.00 40 OUTPUT CURRENT (mA) Receiver Input Thresholds 50 V+ – 0.4 Output Waveforms RECEIVER OUTPUT –1.2 DRIVER OUTPUT –1.6 – 2.0 5V 0V 10V 0V –10V INPUT 1.2 5V 0V 0.8 0.4 V– 125 1039A G06 Driver Output Swing vs Current – 0.8 100 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 OUTPUT CURRENT (mA) V+ = 12V V – = –12V VCC = 5V RL = 3k 2µs/DIV 1039A G09 DRIVER OUTPUT CONNECTED TO RECEIVER INPUT 1039A G08 1039afb For more information www.linear.com/1039 LT1039A/LT1039A-16 Typical Performance Characteristics Shutdown to Driver Output 10V RECEIVER 5V OUTPUT 0V OUTPUT HIGH 0V DRIVER OUTPUT –5V –10V ON/OFF 5V INPUT 0V BIAS Pin Response Time Shutdown to Receiver Output OUTPUT LOW 6V 6V RECEIVER 1 4V OUTPUT 2V RECEIVER 4V OUTPUT 2V 0V BIAS INPUT (THRU 25kΩ) ON/OFF 5V INPUT 0V V+ = 12V V – = –12V RL = 3k 2µs/DIV Pin Functions 1039A G10 0V 5V 0V VCC = 5V 2ms/DIV 1039A G11 VCC = 5V 0.2µs/DIV 1039A G12 (Pin numbers listed are for 18-pin device) V+, V– (Pins 1, 9): Driver Supply Pins. Supply current drops to zero in shutdown mode. Driver outputs are in a high impedance state when V+ and V– = 0V. BIAS (Pin 2): Keeps receiver 1 on while the LT1309A is in the shutdown mode. Leave BIAS pin open when not in use. See Applications Information for proper use. REC IN (Pins 3, 5, 7): Receiver Input Pins. Accepts RS232 voltage levels (±30V) and has 0.4V of hysteresis to provide noise immunity. Input impedance is nominally 30kΩ. Receiver input pins are internally protected from ESD transients. In order to insure proper functioning of the ESD protection devices, the VCC and V– supply pins must be bypassed with low ESR capacitors located close to the pins. A 0.1µF ceramic capacitor works well. TR OUT (Pins 4, 6, 8): Driver Outputs with RS232 Voltage Levels. Outputs are in a high impedance state when in the shutdown mode or when power is off (V+ and V– = 0V) to allow data line sharing. Outputs are fully short-circuit protected from V– + 30V to V+ – 30V with power on, off or in the shutdown mode. Typical output breakdowns are greater than ±45V and higher applied voltages will not damage the device if moderately current limited. Driver- output pins are internally protected from ESD transients. In order to insure proper functioning of the ESD protection devices, the V+ and V– supply pins must be bypassed with low ESR capacitors located close to thepins. 0.1µF ceramic capacitors work well. GND (Pin 10): Ground Pin. TR IN (Pins 11, 13, 15): RS232 Driver Input Pins. Inputs are TTL/CMOS compatible. Inputs should not be allowed to float. Tie unused inputs to VCC. REC OUT (Pins 12, 14, 16): Receiver Outputs with TTL/ CMOS Voltage Levels. Outputs are in a high impedance state when in the shutdown mode to allow data line sharing. Outputs are fully short-circuit protected to ground or VCC with power on, off or in the shutdown mode. ON/OFF (Pin 17): Controls the operation mode of the LT1039A and is TTL/CMOS compatible. A logic low puts the device in the shutdown mode which reduces input supply current to zero and places both driver and receiver outputs in a high impedance state. VCC (Pin 18): 5V Power for Receivers. 1039afb For more information www.linear.com/1039 5 LT1039A/LT1039A-16 Applications Information The driver output stage of the LT1039A offers significantly improved protection over older bipolar and CMOS designs. In addition to current limiting, the driver output can be externally forced to ±30V with no damage or excessive current flow. Sharing a Receiver Line RS232 INPUT A LT1039A #1 RECEIVER RS232 INPUT B LT1039A #2 RECEIVER LT1039A Driver 30V LOGIC OUTPUT LT1039A OUTPUT CAN BE FORCED EXTERNALLY – 30V 1039A AI01 The driver outputs utilize high impedance overvoltage protection, eliminating the flow of fault currents into supplies, as will happen with conventional diode clampconfigurations. Older RS232 Drivers and Other CMOS Drivers V+ ON/OFF (CHANNEL SELECT) INPUT LOGIC TRANSMIT/RECEIVE LINE Sharing a Transmitter Line LOGIC INPUT A LT1039A #1 DRIVER LOGIC INPUT B LT1039A #2 DRIVER ON/OFF (CHANNEL SELECT) INPUT 6 RS232 TRANSMIT/RECEIVE LINE LT1039A #1 DRIVER LT1039A #2 RECEIVER 1039A AI02 Placing the LT1039A in the shutdown mode (Pin 17 low) puts both the driver and receiver outputs in a high impedance state. This allows data line sharing and transceiverapplications. 1039A AI04 Transceiver WITH SOME DRIVERS, EXTERNALLY APPLIED VOLTAGE CAN FORCE THE SUPPLIES V– LOGIC INVERTER ON/OFF (TRANSMIT/RECEIVE) INPUT LOGIC INVERTER 1039A AI05 The shutdown mode also drops all supply currents (VCC, V+, V–) to zero for power conscious systems. RS232 TRANSMISSION LINE LOGIC INVERTER 1039A AI03 1039afb For more information www.linear.com/1039 LT1039A/LT1039A-16 Applications Information When driving CMOS logic from a receiver that will be used in the shutdown mode and there is no other active receiver on the line, a 51k resistor can be placed from the logic input to VCC to force a definite logic level when the receiver output is in a high impedance state. Driving CMOS Logic from a Receiver CMOS LOGIC 51k* LT1039A RECEIVER Input Overvoltage Protection RS232 INPUT RECEIVER 30k 30V 5.6k 25k 2 BIAS 1039A AI06 To protect against receiver input overloads in excess of ±30V, a voltage clamp can be placed on the data line and still maintain RS232 compatibility. 1k LOGIC SHUTDOWN INPUT LOGIC OUTPUT *FORCES LOGIC INPUT STATE WHEN VON/OFF IS LOW ON/OFF INPUT The BIAS pin is used to “keep alive” one receiver while in the shutdown mode (all other circuitry being inactive). This allows a system to be in shutdown and still have one active receiver for transferring data. Keeping Alive One Receiver While in Shutdown VCC RS232 INPUT Driver inputs should not be allowed to float. Any unused inputs should be tied to VCC. LOGIC OUTPUT 30V 1039A AI07 RS232 INPUT It can also be used to make an RS232 compatible shutdown control line. Driving the BIAS pin low through a resistance of 24k to 30k keeps the receiver active. Do not drive the BIAS pin directly from a logic output without the series resistor. An unused BIAS pin should be left open. RS232 Compatible Shutdown Control Line 25k 2 BIAS RS232 SHUTDOWN INPUT ON/OFF 3 17 16 LT1039A RECEIVER 5.6k 16 LOGIC OUTPUT 1039A AI09 5kΩ Impedance Matching 30k 3 LT1039A The receiver input impedance of the LT1039A is nominally 30kΩ. For applications requiring a 5kΩ input impedance, a 5.6k resistor can be connected from the receiver input to ground. RS232 INPUT 17 ON/OFF 1039A AI10 LOGIC OUTPUT 1039A AI08 1039afb For more information www.linear.com/1039 7 LT1039A/LT1039A-16 Package Description Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings. J Package 18-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) CORNER LEADS OPTION (4 PLCS) .005 (0.127) MIN .023 – .045 (0.584 – 1.143) HALF LEAD OPTION .960 (24.384) MAX 18 17 16 15 14 13 12 11 10 .220 – .310 (5.590 – 7.870) .025 (0.635) RAD TYP .045 – .065 (1.143 – 1.650) FULL LEAD OPTION 1 2 3 4 5 6 7 8 9 .200 (5.080) MAX .300 BSC (7.62 BSC) .015 – .060 (0.380 – 1.520) .008 – .018 (0.203 – 0.457) 0° – 15° NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .125 (3.175) MIN .045 – .065 (1.143 – 1.651) .014 – .026 (0.360 – 0.660) .100 (2.54) BSC J18 0801 OBSOLETE PACKAGE 8 1039afb For more information www.linear.com/1039 LT1039A/LT1039A-16 Package Description Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings. N Package 16-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510 Rev I) .770* (19.558) MAX 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 .255 ±.015* (6.477 ±0.381) .300 – .325 (7.620 – 8.255) .008 – .015 (0.203 – 0.381) ( +.035 .325 –.015 +0.889 8.255 –0.381 NOTE: 1. DIMENSIONS ARE ) .130 ±.005 (3.302 ±0.127) .045 – .065 (1.143 – 1.651) .020 (0.508) MIN .065 (1.651) TYP .120 (3.048) MIN .100 (2.54) BSC .018 ±.003 (0.457 ±0.076) N16 REV I 0711 INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) 1039afb For more information www.linear.com/1039 9 LT1039A/LT1039A-16 Package Description Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings. N Package 18-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510 Rev I) .920* (23.368) MAX 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 .255 ±.015* (6.477 ±0.381) .300 – .325 (7.620 – 8.255) .008 – .015 (0.203 – 0.381) ( +.035 .325 –.015 8.255 +0.889 –0.381 ) .130 ±.005 (3.302 ±0.127) .045 – .065 (1.143 – 1.651) .020 (0.508) MIN .065 (1.651) TYP .120 (3.048) MIN .005 (0.127) MIN .100 (2.54) BSC .018 ±.003 (0.457 ±0.076) N18 REV I 0711 NOTE: 1. DIMENSIONS ARE INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) 10 1039afb For more information www.linear.com/1039 LT1039A/LT1039A-16 Package Description Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings. SW Package 16-Lead Plastic Small Outline (Wide .300 Inch) (Reference LTC DWG # 05-08-1620) .050 BSC .045 ±.005 .030 ±.005 TYP .398 – .413 (10.109 – 10.490) NOTE 4 16 N 15 14 13 12 11 10 9 N .325 ±.005 .420 MIN .394 – .419 (10.007 – 10.643) NOTE 3 1 2 3 N/2 N/2 RECOMMENDED SOLDER PAD LAYOUT 1 .005 (0.127) RAD MIN .009 – .013 (0.229 – 0.330) NOTE: 1. DIMENSIONS IN .291 – .299 (7.391 – 7.595) NOTE 4 .010 – .029 × 45° (0.254 – 0.737) 2 3 4 5 6 .093 – .104 (2.362 – 2.642) 7 8 .037 – .045 (0.940 – 1.143) 0° – 8° TYP NOTE 3 .016 – .050 (0.406 – 1.270) .050 (1.270) BSC .014 – .019 (0.356 – 0.482) TYP INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. 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 4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) .004 – .012 (0.102 – 0.305) S16 (WIDE) 0502 1039afb For more information www.linear.com/1039 11 LT1039A/LT1039A-16 Package Description Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings. SW Package 18-Lead Plastic Small Outline (Wide .300 Inch) (Reference LTC DWG # 05-08-1620) .050 BSC .045 ±.005 .030 ±.005 TYP .447 – .463 (11.354 – 11.760) NOTE 4 N 18 16 15 14 13 12 11 10 N .325 ±.005 .420 MIN 17 .394 – .419 (10.007 – 10.643) NOTE 3 1 2 3 N/2 N/2 RECOMMENDED SOLDER PAD LAYOUT .005 (0.127) RAD MIN .009 – .013 (0.229 – 0.330) NOTE: 1. DIMENSIONS IN .291 – .299 (7.391 – 7.595) NOTE 4 .010 – .029 × 45° (0.254 – 0.737) 1 2 3 4 5 6 7 .093 – .104 (2.362 – 2.642) 9 .037 – .045 (0.940 – 1.143) 0° – 8° TYP NOTE 3 .016 – .050 (0.406 – 1.270) .050 (1.270) BSC .014 – .019 (0.356 – 0.482) TYP INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. 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 4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 12 8 .004 – .012 (0.102 – 0.305) S18 (WIDE) 0502 1039afb For more information www.linear.com/1039 LT1039A/LT1039A-16 Revision History (Revision history begins at Rev B) REV DATE DESCRIPTION B 12/12 Removed LT1039AI from Abs Max Ratings and Package/Order Information PAGE NUMBER Updated N and SW Package Descriptions 2 9-12 1039afb 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. 13 LT1039A/LT1039A-16 Typical Application LT1180A (Driver/Receiver with Power Supply) Driving an LT1039A SHUTDOWN 18 ON/OFF VCC LT1039A 5V 17 18 VCC ON/OFF LT1039A 17 TTL IN RS232 OUT TTL IN RS232 OUT TTL IN RS232 OUT TTL IN RS232 OUT TTL IN RS232 OUT RS232 IN TTL OUT TTL OUT RS232 IN 30k TTL OUT 0.1µF 0.1µF + + RS232 IN 2 C+ 4 C– 5 6 30k RS232 IN 30k TTL OUT C+ C– TTL OUT 30k GND 3 V+ 7 V– RS232 IN 1 + 16 0.1µF + 9 0.1µF 30k V+ V– GND 10 1039A TA03 Related Parts PART NUMBER DESCRIPTION COMMENTS LTC®485 Low Power RS485 Transceiver Industry Standard LT1137A 5V 3 Driver/5 Receiver RS232 Transceiver ±15kV ESD Protection LT1180A/LT1181A 5V 2 Driver/2 Receiver RS232 Transceiver Industry Standard, 0.1µF Capacitors LTC1345 V.35 Transceiver Single 5V Supply Using 0.1µF Capacitors LTC1348 3.3V 3 Driver/5 Receiver RS232 Transceiver Operates from 3.3V to 5V Supplies, 5 Receivers Active in Shutdown LTM2882 Dual Isolated RS232 µModule Transceiver + Power 1Mbps, ±10kV HBM ESD, 2500VRMS LTC2870/LTC2871 RS232/RS485 Multiprotocol Transceivers with Integrated Termination 20Mbps RS485 and 500kbps RS232, ±26kV ESD, 3V to 5V Operation LTC2862/LTC2863/ LTC2864/LTC2865 ±60V Fault Protected 3V to 5.5V RS485/RS422 Transceivers 14 Linear Technology Corporation 20Mbps or 250kbps ±15kV HBM ESD, ±25V Common Mode Range 1039afb LT 0213 REV B • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408)432-1900 ● FAX: (408) 434-0507 ● www.linear.com/1039 LINEAR TECHNOLOGY CORPORATION 2001