LT1131A

LT1130A/LT1140A Series Advanced Low Power 5V RS232 Drivers/Receivers with Small Capacitors FEATURES s DESCRIPTIO s s s s s s s s s s s ESD Protection over ±10kV (±15kV IEC-1000-4-2 for LT1133A, LT1137A and LT1141A) Uses Small Capacitors: 0.1µF, 0.2µF 1µA Supply Current in SHUTDOWN 120kBaud Operation for RL = 3k, CL = 2500pF 250kBaud Operation for RL = 3k, CL = 1000pF CMOS Comparable Low Power Easy PC Layout: Flowthrough Architecture Rugged Bipolar Design: Absolutely No Latchup Outputs Assume a High Impedance State When Off or Powered Down Improved Protection: RS232 I/O Lines Can Be Forced to ± 30V Without Damage Output Overvoltage Does Not Force Current Back into Supplies Available in SO and SSOP Packages The LT ®1130A/LT1140A series of RS232 drivers/receivers features special bipolar construction techniques which protect the drivers and receivers beyond the fault conditions stipulated for RS232. Driver outputs and receiver inputs can be shorted to ± 30V without damaging the device or the power supply generator. In addition, the RS232 I/O pins are resilient to multiple ±10kV ESD strikes. An advanced driver output stage operates up to 250kbaud while 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. TYPICAL APPLICATIO Basic Operation V+ 1 0.1µF 0.1µF ×2 DRIVER OUT RX IN DRIVER OUT TO LINE RX IN RX IN RX IN DRIVER OUT RX IN ON/OFF = 5V 5V VCC 2 3 4 5 6 7 8 9 10 11 12 13 14 LT1137A 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V– 0.1µF ×2 DRIVER IN RX OUT DRIVER IN RX OUT RX OUT RX OUT DRIVER IN RX OUT GND DRIVER DISABLE TO LOGIC 0.1µF RECEIVER OUTPUT CL = 50pF DRIVER R OUTPUT RL = 3k CL = 2500pF INPUT 1130A • TA01 LT1130A 5-Driver/5-Receiver RS232 Transceiver LT1131A 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 LT1136A 4-Driver/5-Receiver RS232 Transceiver w/Shutdown LT1137A 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 U Output Waveforms LT1130A • TA02 U 1 LT1130A/LT1140A Series ABSOLUTE AXI U RATI GS Supply Voltage (VCC) ................................................ 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 (VCC + 0.3V) Output Voltage Driver .................................................... – 30V to 30V Receiver ................................. – 0.3V to (VCC + 0.3V) PRODUCT SELECTIO TABLE Part Number LT1130A LT1131A LT1132A LT1133A** LT1134A LT1135A LT1136A LT1137A** LT1138A LT1139A LT1140A LT1141A** Power Supply Voltages* 5 5 5 5 5 5, 12, –12 5 5 5 5, 12 5, 12, –12 5, 12, –12 Shutdown No Yes No No No No Yes Yes Yes Yes Yes Yes *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. PACKAGE/ORDER I FOR ATIO 5-DRIVER/5-RECEIVER TOP VIEW V+ 5V VCC C1+ C1– DRIVER OUT RX IN DRIVER OUT RX IN DRIVER OUT 1 2 3 4 5 6 7 8 9 LT1130A 28 V – 27 C2 – 26 C2 + 25 DRIVER IN 24 RX OUT 23 DRIVER IN 22 RX OUT 21 DRIVER IN 20 RX OUT 19 DRIVER IN 18 RX OUT 17 DRIVER IN 16 RX OUT 15 GND SW PACKAGE 28-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1130ACNW LT1130ACSW LT1130AISW RX IN 10 DRIVER OUT 11 RX IN 12 DRIVER OUT 13 RX IN 14 NW PACKAGE 28-LEAD PDIP TJMAX = 150°C, θJA = 56°C/W (NW) TJMAX = 150°C, θJA = 68°C/W (SW) 2 U U W WW U U W (Note 1) 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 Driver Disable No Yes No No No No Yes Yes Yes No Yes Yes Drivers 5 5 5 3 4 5 4 3 5 4 5 3 Receivers 5 4 3 5 4 3 5 5 3 4 3 5 External Components 4 Capacitors 4 Capacitors 4 Capacitors 4 Capacitors 4 Capacitors None 4 Capacitors 4 Capacitors 4 Capacitors 2 Capacitors None None 5-DRIVER/4-RECEIVER WITH SHUTDOWN TOP VIEW V+ 5V VCC C1+ C1– DRIVER OUT RX IN DRIVER OUT RX IN DRIVER OUT 1 2 3 4 5 6 7 8 9 LT1131A 28 V – 27 C2 – 26 C2 + 25 DRIVER IN 24 RX OUT 23 DRIVER IN 22 RX OUT 21 DRIVER IN 20 RX OUT 19 DRIVER IN 18 RX OUT 17 DRIVER IN 16 GND 15 DRIVER DISABLE SW PACKAGE 28-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1131ACNW LT1131ACSW RX IN 10 DRIVER OUT 11 RX IN 12 DRIVER OUT 13 ON/OFF 14 NW PACKAGE 28-LEAD PDIP TJMAX = 150°C, θJA = 56°C/W (NW) TJMAX = 150°C, θJA = 68°C/W (SW) LT1130A/LT1140A Series PACKAGE/ORDER I FOR ATIO 5-DRIVER/3-RECEIVER TOP VIEW V+ 5V VCC C1+ C1– DRIVER OUT DRIVER OUT RX IN DRIVER OUT DRIVER OUT 1 2 3 4 5 6 7 8 9 LT1132A 24 V – 23 C2 – 22 C2 + 21 DRIVER IN 20 DRIVER IN 19 RX OUT 18 DRIVER IN 17 DRIVER IN 16 RX OUT 15 DRIVER IN 14 RX OUT 13 GND SW PACKAGE 24-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1132ACN LT1132ACSW LT1132AISW RX IN 10 DRIVER OUT 11 RX IN 12 N PACKAGE 24-LEAD PDIP TJMAX = 150°C, θJA = 58°C/W (N) TJMAX = 150°C, θJA = 80°C/W (SW) 4-DRIVER/4-RECEIVER TOP VIEW V+ 5V VCC C1+ C1– DRIVER OUT RX IN DRIVER OUT RX IN DRIVER OUT 1 2 3 4 5 6 7 8 9 LT1134A 24 V – 23 C2 – 22 C2 + 21 DRIVER IN 20 RX OUT 19 DRIVER IN 18 RX OUT 17 DRIVER IN 16 RX OUT 15 DRIVER IN 14 RX OUT 13 GND SW PACKAGE 24-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1134ACN LT1134ACSW LT1134AIN LT1134AISW RX IN 10 DRIVER OUT 11 RX IN 12 N PACKAGE 24-LEAD PDIP TJMAX = 150°C, θJA = 58°C/W (N) TJMAX = 150°C, θJA = 80°C/W (SW) 4-DRIVER/5-RECEIVER WITH SHUTDOWN TOP VIEW V+ 5V VCC C1+ C1– DRIVER OUT RX IN DRIVER OUT RX IN DRIVER OUT 1 2 3 4 5 6 7 8 9 LT1136A 28 V – 27 C2 – ORDER PART NUMBER LT1136ACNW LT1136ACSW 26 C2 + 25 DRIVER IN 24 RX OUT 23 DRIVER IN 22 RX OUT 21 DRIVER IN 20 RX OUT 19 DRIVER IN 18 RX OUT 17 RX OUT 16 GND 15 DRIVER DISABLE SW PACKAGE 28-LEAD PLASTIC SO WIDE RX IN 10 DRIVER OUT 11 RX IN 12 RX IN 13 ON/OFF 14 NW PACKAGE 28-LEAD PDIP TJMAX = 150°C, θJA = 56°C/W (NW) TJMAX = 150°C, θJA = 68°C/W (SW) U 3-DRIVER/5-RECEIVER TOP VIEW V+ 5V VCC C1+ C1– DRIVER OUT RX IN DRIVER OUT RX IN RX IN 1 2 3 4 5 6 7 8 9 LT1133A 24 V – 23 C2 – 22 C2 + 21 DRIVER IN 20 RX OUT 19 DRIVER IN 18 RX OUT 17 RX OUT 16 RX OUT 15 DRIVER IN 14 RX OUT 13 GND SW PACKAGE 24-LEAD PLASTIC SO WIDE W U ORDER PART NUMBER LT1133ACN LT1133ACSW LT1133AISW RX IN 10 DRIVER OUT 11 RX IN 12 N PACKAGE 24-LEAD PDIP TJMAX = 150°C, θJA = 58°C/W (N) TJMAX = 150°C, θJA = 80°C/W (SW) 5-DRIVER/3-RECEIVER WITHOUT CHARGE PUMP TOP VIEW 12V V + 5V VCC DRIVER OUT DRIVER OUT RX IN DRIVER OUT DRIVER OUT RX IN DRIVER OUT 1 2 3 4 5 6 7 8 9 LT1135A 20 –12V V – 19 DRIVER IN 18 DRIVER IN 17 RX OUT 16 DRIVER IN 15 DRIVER IN 14 RX OUT 13 DRIVER IN 12 RX OUT 11 GND SW PACKAGE 20-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1135ACN LT1135ACSW RX IN 10 N PACKAGE 20-LEAD PDIP TJMAX = 150°C, θJA = 79°C/W (N) TJMAX = 150°C, θJA = 85°C/W (SW) 3-DRIVER/5-RECEIVER WITH SHUTDOWN TOP VIEW V+ 5V VCC C1+ C1– DRIVER OUT RX IN DRIVER OUT RX IN RX IN 1 2 3 4 5 6 7 8 9 LT1137A 28 V – 27 C2 – 26 C2 + 25 DRIVER IN 24 RX OUT 23 DRIVER IN 22 RX OUT 21 RX OUT 20 RX OUT 19 DRIVER IN 18 RX OUT 17 GND 16 DRIVER DISABLE 15 NC NW PACKAGE 28-LEAD PDIP SW PACKAGE 28-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1137ACG LT1137ACNW LT1137ACSW LT1137AIG LT1137AINW LT1137AISW RX IN 10 DRIVER OUT 11 RX IN 12 ON/OFF 13 NC 14 G PACKAGE 28-LEAD PLASTIC SSOP TJMAX = 150°C, θJA = 96°C/W (G) TJMAX = 150°C, θJA = 56°C/W (NW) TJMAX = 150°C, θJA = 68°C/W (SW) 3 LT1130A/LT1140A Series PACKAGE/ORDER I FOR ATIO 5-DRIVER/3-RECEIVER WITH SHUTDOWN TOP VIEW V+ 5V VCC C1+ C1– DRIVER OUT DRIVER OUT RX IN DRIVER OUT RX IN 1 2 3 4 5 6 7 8 9 LT1138A 28 V – 27 C2 – 26 C2 + 25 DRIVER IN 24 DRIVER IN 23 RX OUT 22 DRIVER IN 21 RX OUT 20 DRIVER IN 19 RX OUT 18 DRIVER IN 17 GND 16 DRIVER DISABLE 15 NC NW PACKAGE 28-LEAD PDIP SW PACKAGE 28-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1138ACG LT1138ACNW LT1138ACSW LT1138AIG DRIVER OUT 10 RX IN 11 DRIVER OUT 12 ON/OFF 13 NC 14 G PACKAGE 28-LEAD PLASTIC SSOP TJMAX = 150°C, θJA = 96°C/W (G) TJMAX = 150°C, θJA = 56°C/W (NW) TJMAX = 150°C, θJA = 68°C/W (SW) 5-DRIVER/3-RECEIVER WITH SHUTDOWN WITHOUT CHARGE PUMP TOP VIEW 12V V + 5V VCC N.C. DRIVER OUT DRIVER OUT RX IN DRIVER OUT DRIVER OUT RX IN 1 2 3 4 5 6 7 8 9 LT1140A 24 –12V V – 23 N.C. 22 DRIVER IN 21 DRIVER IN 20 RX OUT 19 DRIVER IN 18 DRIVER IN 17 RX OUT 16 DRIVER IN 15 RX OUT 14 GND 13 DRIVER DISABLE SW PACKAGE 24-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1140ACN LT1140ACSW DRIVER OUT 10 RX IN 11 ON/OFF 12 N PACKAGE 24-LEAD PDIP TJMAX = 150°C, θJA = 58°C/W (N) TJMAX = 150°C, θJA = 80°C/W (SW) Consult factory for Industrial and Military grade parts. The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) PARAMETER Power Supply Generator V + Output V– Output (Note 3) (Note 3), V + = 12V, V – = –12V (Note 3) (Note 3), V + (Note 3) (Note 3) V + = 12V = 12V (Note 3), V – = – 12V q q q q q q q ELECTRICAL CHARACTERISTICS CONDITIONS 5V VCC Supply Current: LT1130A, LT1131A, LT1132A, LT1133A, LT1134A, LT1136A, LT1138A 5V VCC Supply Current: LT1135A, LT1140A, LT1141A 5V VCC Supply Current: LT1137A 5V VCC Supply Current: LT1139A 12V V + Supply Current: LT1135A, LT1140A, LT1141A 12V V + Supply Current: LT1139A – 12V V – Supply Current: LT1135A, LT1140A, LT1141A 4 U 4-DRIVER/4-RECEIVER WITH SHUTDOWN WITH 12V AND 5V SUPPLIES TOP VIEW N.C. 5V VCC 12V INPUT DRIVER OUT RX IN DRIVER OUT RX IN DRIVER OUT RX IN 1 2 3 4 5 6 7 8 9 LT1139A 24 V – 23 C – 22 C + 21 DRIVER IN 20 RX OUT 19 DRIVER IN 18 RX OUT 17 DRIVER IN 16 RX OUT 15 DRIVER IN 14 RX OUT 13 GND SW PACKAGE 24-LEAD PLASTIC SO WIDE W U ORDER PART NUMBER LT1139ACN LT1139ACSW DRIVER OUT 10 RX IN 11 ON/OFF 12 N PACKAGE 24-LEAD PDIP TJMAX = 150°C, θJA = 58°C/W (N) TJMAX = 150°C, θJA = 80°C/W (SW) 3-DRIVER/5-RECEIVER WITH SHUTDOWN WITHOUT CHARGE PUMP TOP VIEW 12V V + 5V VCC N.C. RX IN DRIVER OUT RX IN DRIVER OUT RX IN DRIVER OUT 1 2 3 4 5 6 7 8 9 LT1141A 24 –12V V – 23 N.C. 22 RX OUT 21 DRIVER IN 20 RX OUT 19 DRIVER IN 18 RX OUT 17 DRIVER IN 16 RX OUT 15 RX OUT 14 GND 13 DRIVER DISABLE SW PACKAGE 24-LEAD PLASTIC SO WIDE ORDER PART NUMBER LT1141ACN LT1141ACSW RX IN 10 RX IN 11 ON/OFF 12 N PACKAGE 24-LEAD PDIP TJMAX = 150°C, θJA = 58°C/W (N) TJMAX = 150°C, θJA = 80°C/W (SW) MIN TYP 8.6 – 7.8 15 8 12 8 1 6 2 MAX UNITS V V 25 15 17 15 4 10 6 mA mA mA mA mA mA mA LT1130A/LT1140A Series ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) PARAMETER Supply Current when OFF (VCC) Supply Rise Time Shutdown to Turn-On ON/OFF Pin Thresholds ON/OFF Pin Current DRIVER DISABLE Pin Thresholds DRIVER DISABLE Pin Current Oscillator Frequency Any Driver Output Voltage Swing Logic Input Voltage Level Logic Input Current Output Short-Circuit Current Output Leakage Current Data Rate Slew Rate Propagation Delay Any Receiver Input Voltage Thresholds Hysteresis Input Resistance Output Voltage Output Leakage Current Output Short-Circuit Current Propagation Delay – 10V < VIN < 10V Output Low, IOUT = – 1.6mA Output High, IOUT = 160µA (VCC = 5V) Shutdown (Note 4) 0 ≤ VOUT ≤ VCC Sinking Current, VOUT = VCC Sourcing Current, VOUT = 0V Output Transition tHL High to Low (Note 6) Output Transition tLH Low to High q q q CONDITIONS Shutdown (Note 4) Driver Disable C1, C2, C +, C – = 1.0µF C +, C – = 0.1µF, C1, C2 = 0.2µF Input Low Level (Device Shut Down) Input High Level (Device Enabled) 0V ≤ VON/OFF ≤ 5V Input Low Level (Drivers Enabled) Input High Level (Drivers Disabled) 0V ≤ VDRIVER DISABLE ≤ 5V q q q q q q q MIN TYP 1 4 2.0 0.2 MAX 10 UNITS µA mA ms ms 2.4 – 15 2.4 – 10 1.4 1.4 1.4 1.4 130 0.8 80 0.8 500 V V µA V V µA kHz V V V V µA mA µA kbaud kbaud Load = 3k to GND Positive Negative Input Low Level (VOUT = High) Input High Level (VOUT = Low) 0.8V ≤ VIN ≤ 2V VOUT = 0V Shutdown VOUT = ± 30V (Note 4) RL = 3k, CL = 2500pF RL = 3k, CL = 1000pF RL = 3k, CL = 51pF RL = 3k, CL = 2500pF (Note 8) Output Transition tHL High to Low (Note 5) Output Transition tLH Low to High Input Low Threshold (VOUT = High) Input High Threshold (VOUT = Low) q q q q q 5 7.3 – 6.5 1.4 1.4 5 ± 17 10 –5 0.8 20 100 2 ±9 q 120 250 15 6 0.6 0.5 q q q 30 1.3 1.3 V/µs V/µs µs µs V V V kΩ V V µA mA mA ns ns 0.8 0.1 3 3.5 1.3 1.7 0.4 5 0.2 4.2 1 – 20 20 250 350 2.4 1 7 0.4 10 – 10 600 600 10 Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: Testing done at VCC = 5V and VON/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 shutdown are performed with VON/OFF = 0.1V. Supply current measurements using DRIVER DISABLE are performed with VDRIVER DISABLE = 3V. For LT1135, LT1139, LT1140 and LT1141 with 12V supplies, VOUT leakage is 200µA for VOUT forced to ± 25V. Note 5: For driver delay measurements, RL = 3k and CL = 51pF. Trigger points are set between the driver’s input logic threshold and the output transition to the zero crossing (tHL = 1.4V to 0V and tLH = 1.4V to 0V). Note 6: For receiver delay measurements, CL = 51pF. Trigger points are set between the receiver’s input logic threshold and the output transition to standard TTL/CMOS logic threshold (tHL = 1.3V to 2.4V and tLH = 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 negative voltage. Note 8: For LT1137A, 4V/µs minimum. 5 LT1130A/LT1140A Series TYPICAL PERFOR A CE CHARACTERISTICS Driver Output Voltage 10 8 DRIVER OUTPUT VOLTAGE (V) RL = 3k OUTPUT HIGH THRESHOLD VOLTAGE (V) 6 4 2 0 –2 –4 –6 –8 –10 –55 –25 2.25 2.00 1.75 1.50 1.25 1.00 0.75 INPUT LOW INPUT HIGH SUPPLY CURRENT (mA) VCC = 5.5V VCC = 5V VCC = 4.5V VCC = 4.5V VCC = 5V VCC = 5.5V OUTPUT LOW 50 25 0 75 TEMPERATURE (°C) 100 125 Supply Current in Shutdown 100 5 10 THRESHOLD VOLTAGE (V) SUPPLY CURRENT (mA) SUPPLY CURRENT (µA) 1 0.1 –55 –25 0 25 50 75 TEMPERATURE (°C) ON/OFF Thresholds 3.0 2.5 THRESHOLD VOLTAGE (V) 2.0 1.5 1.0 35 30 25 20 15 10 5 3 DRIVER LEAKAGE CURRENT (µA) SUPPLY CURRENT (mA) ON THRESHOLD OFF THRESHOLD 0.5 0 –55 –25 50 25 75 0 TEMPERATURE (°C) 6 UW LT1130A • TPC01 Receiver Input Thresholds 3.00 2.75 2.50 Supply Current vs Data Rate 100 90 80 70 60 50 40 30 20 10 3 DRIVER RL = 3k CL = 2500pF 5 DRIVER RL = 3k CL = 2500pF 0.50 –55 –25 50 25 0 75 TEMPERATURE (°C) 100 125 0 0 25 75 100 50 DATA RATE (kBaud) 125 150 LT1137A • TPC02 LT1130A • TPC03 Supply Current in Driver Disable 3.0 2.5 2.0 1.5 1.0 0.5 Driver Disable Threshold 4 3 2 1 100 125 0 –55 –25 50 25 0 75 TEMPERATURE (°C) 100 125 0 –55 –25 50 25 75 0 TEMPERATURE (°C) 100 125 LT1137A • TPC04 LT1137A • TPC05 LT1137A • TPC06 Supply Current 50 45 40 10 100 Driver Leakage in Shutdown 5 DRIVER 1 DRIVER NO LOAD 1 VOUT = 30V VOUT = – 30V 100 125 0 –55 –25 50 25 0 75 TEMPERATURE (°C) 100 125 0.1 –55 –25 50 25 0 75 TEMPERATURE (°C) 100 125 LT1137A • TPC07 LT1130A • TPC08 LT1137A • TPC09 LT1130A/LT1140A Series TYPICAL PERFOR A CE CHARACTERISTICS Driver Short-Circuit Current 30 50 SHORT-CIRCUIT CURRENT (mA) 25 ISC + 20 15 ISC – 10 5 0 –55 –25 SHORT-CIRCUIT CURRENT (mA) 50 25 75 0 TEMPERATURE (°C) Shutdown to Driver Output DRIVER OUTPUT HIGH RL = 3k 10 5 0 DRIVER – 5 OUTPUT LOW RL = 3k – 10 ON/OFF PIN DRIVER OUTPUT RL = 3k CL = 2500pF DRIVER OUTPUT RL = 3k PI FU CTIO S VCC: 5V Input Supply Pin. Supply current drops to zero in the shutdown mode. This pin should be decoupled with a 0.1µF ceramic capacitor close to the package pin. Insufficient supply bypassing can result in low output drive levels and 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 the shutdown mode which reduces input supply curent to zero and places all of the drivers and receivers in high impedance 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 on this pin shuts down the charge pump and places all drivers in a high impedance state. Receivers remain active under these 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 + ≈ 2VCC – 1.5V. This pin requires an external charge storage capacitor C ≥ 1.0µF, tied to ground or VCC. Larger value capacitors 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 capacitors is recommended to reduce ripple. UW Receiver Short-Circuit Current 40 ISC – 30 ISC + 20 10 100 125 0 –55 –25 50 25 0 75 TEMPERATURE (°C) 100 125 LT1137A • TPC10 LT1137A • TPC11 Driver Output Waveforms INPUT LT1137A • TPC12 LT1137A • TPC13 U U U 7 LT1130A/LT1140A Series PI FU CTIO S V –: Negative Supply Output (RS232 Drivers). V – ≈ – (2VCC – 2.5V). This pin requires an external charge storage capacitor C ≥ 0.1µF. V – is short-circuit proof for 30 seconds. C1+, C1–, C2+, C2 –: Commutating Capacitor Inputs. These pins require two external capacitors C ≥ 0.2µF: one from C1+ to C1–, and another from C2 + to C2 –. To maintain charge pump efficiency, the capacitor’s effective series resistance should be less than 2Ω. For C ≥ 1µF, 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 µF ceramic capacitor. DRIVER IN: RS232 Driver Input Pins. These inputs are TTL/CMOS compatible. Inputs should not be allowed to float. Tie unused inputs to VCC. 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. Output current capability is sufficient for load conditions up to 2500pF. Outputs are in a high impedance state when in shutdown mode, VCC = 0V, or when the DRIVER DISABLE pin is active. Outputs are fully short-circuit protected from V – + 30V to V + – 30V. Applying higher voltages will not damage the device if the overdrive is moderately current limited. 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 provides 0.4V of hysteresis for noise immunity. Open receiver inputs assume a logic low state. RX OUT: Receiver Outputs with TTL/CMOS Voltage Levels. Outputs are in a high impedance state when in shutdown mode to allow data line sharing. Outputs are fully short-circuit protected to ground or VCC with the power on, off, or in shutdown mode. ESD PROTECTIO 0.2µF 4 5 6 7 8 9 10 11 12 13 14 25 24 23 22 21 20 19 18 17 16 15 DRIVER 1 IN RX1 OUT DRIVER 2 IN RX2 OUT RX3 OUT RX4 OUT DRIVER 3 IN RX5 OUT GND DRIVER DISABLE LT1130A • ESD TC DRIVER 1 OUT RX1 IN DRIVER 2 OUT RS232 LINE PINS PROTECTED TO ±15kV RX2 IN RX3 IN RX4 IN DRIVER 3 OUT RX5 IN ON/OFF The ESD protection on the LT1133A, LT1137A and LT1141A meets ±15kV air gap discharge and ± 8kV contact methods per IEC-1000-4-2. 8 + The RS232 line inputs of the LT1130A/LT1140A series of RS232 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. In order 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 VCC, V +, V – and GND shorted to ground or connected with low ESR capacitors. U U U U ESD Test Circuit 1 V+ 5V VCC 2 0.1µF 0.1µF 28 LT1137A 27 26 V– 0.1µF 0.2µF + 3 LT1130A/LT1140A Series TYPICAL APPLICATIO S Operation Using 5V and 12V Power Supplies 5V VCC 12V V + 0.01µF 0.01µF TO LINE MOUSE V+ LOGIC (1) DCD DSR RX RTS OPTICS V– TX CTS DTR (5) (9) RI U V+ VCC C1+ C1– DRIVER OUT RX IN DRIVER OUT RX IN RX IN RX IN DRIVER OUT RX IN ON/0FF = 5V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 LT1137A 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V– 0.1µF ×2 DRIVER IN RX OUT DRIVER IN RX OUT RX OUT RX OUT DRIVER IN RX OUT GND DRIVER DISABLE TO LOGIC 0.1µF LT1130A • TA03 Typical Mouse Driving Application V+ 0.1µF 0.1µF ×2 DRIVER 1 OUT RX1 IN DRIVER 2 OUT RX2 IN RX3 IN 5V VCC 1 2 3 4 5 6 7 8 9 LT1137A 28 27 26 V– 0.1µF ×2 LOGIC “0” LOGIC “0” 0.1µF 25 DRIVER 1 IN 24 RX1 OUT 23 DRIVER 2 IN 22 RX2 OUT 21 RX3 OUT 20 RX4 OUT 19 DRIVER 3 IN 18 RX5 OUT 17 GND 16 DRIVER DISABLE 15 MOUSE DATA RX4 IN 10 DRIVER 3 OUT 11 RX5 IN 12 ON/OFF 13 14 LOGIC “1” DB9 LT1130A • TA04 9 LT1130A/LT1140A Series PACKAGE DESCRIPTIO U Dimensions in inches (millimeters) unless otherwise noted. G Package 28-Lead Plastic SSOP (0.209) (LTC DWG # 05-08-1640) 0.205 – 0.212** (5.20 – 5.38) 0.068 – 0.078 (1.73 – 1.99) 0° – 8° 0.301 – 0.311 (7.65 – 7.90) 0.002 – 0.008 (0.05 – 0.21) 0.397 – 0.407* (10.07 – 10.33) 28 27 26 25 24 23 22 21 20 19 18 17 16 15 0.005 – 0.009 (0.13 – 0.22) 0.010 – 0.015 *DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH (0.25 – 0.38) 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 0.022 – 0.037 (0.55 – 0.95) 0.0256 (0.65) BSC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 G28 SSOP 0694 N Package 20-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 0.300 – 0.325 (7.620 – 8.255) 0.130 ± 0.005 (3.302 ± 0.127) 0.020 (0.508) MIN 0.045 – 0.065 (1.143 – 1.651) 1.040* (26.416) MAX 20 19 18 17 16 15 14 13 12 11 0.009 – 0.015 (0.229 – 0.381) 0.065 (1.651) TYP 0.125 (3.175) MIN 0.005 (0.127) MIN 0.100 ± 0.010 (2.540 ± 0.254) 0.018 ± 0.003 (0.457 ± 0.076) 0.255 ± 0.015* (6.477 ± 0.381) ( +0.035 0.325 –0.015 +0.889 8.255 –0.381 ) 1 2 3 4 5 6 7 8 9 10 N20 1197 *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) 1.265* (32.131) MAX 24 23 22 21 20 19 18 17 16 15 14 13 0.300 – 0.325 (7.620 – 8.255) 0.130 ± 0.005 (3.302 ± 0.127) 0.020 (0.508) MIN 0.045 – 0.065 (1.143 – 1.651) 0.009 – 0.015 (0.229 – 0.381) 0.255 ± 0.015* 0.065 (6.477 ± 0.381) (1.651) TYP 0.018 ± 0.003 (0.457 ± 0.076) 1 2 3 4 5 6 7 8 9 10 11 12 N24 1197 ( +0.035 0.325 –0.015 8.255 +0.889 –0.381 ) 0.125 (3.175) MIN 0.100 ± 0.010 (2.540 ± 0.254) *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) 10 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) 0.600 – 0.625 (15.240 – 15.875) 0.150 ± 0.005 (3.810 ± 0.127) 0.015 (0.381) MIN 0.009 – 0.015 (0.229 – 0.381) 0.505 – 0.560* (12.827 – 14.224) 0.125 (3.175) MIN 0.035 – 0.080 (0.889 – 2.032) 0.100 ± 0.010 (2.540 ± 0.254) 0.018 ± 0.003 (0.457 ± 0.076) 0.045 – 0.065 (1.143 – 1.651) 0.070 (1.778) TYP 28 27 26 25 24 1.455* (36.957) MAX 23 22 21 20 19 18 17 16 15 ( +0.035 0.625 –0.015 +0.889 –0.381 15.87 ) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 N28 1197 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) SW Package 20-Lead Plastic Small Outline (Wide 0.300) (LTC DWG # 05-08-1620) 0.291 – 0.299** (7.391 – 7.595) 0.010 – 0.029 × 45° (0.254 – 0.737) 0.093 – 0.104 (2.362 – 2.642) 0.037 – 0.045 (0.940 – 1.143) 20 19 18 0.496 – 0.512* (12.598 – 13.005) 17 16 15 14 13 12 11 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) TYP 0.014 – 0.019 (0.356 – 0.482) TYP NOTE 1 0.004 – 0.012 (0.102 – 0.305) 0.394 – 0.419 (10.007 – 10.643) 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 SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 1 2 3 4 5 6 7 8 9 10 S20 (WIDE) 0396 SW Package 24-Lead Plastic Small Outline (Wide 0.300) (LTC DWG # 05-08-1620) 0.291 – 0.299** (7.391 – 7.595) 0.010 – 0.029 × 45° (0.254 – 0.737) 0.598 – 0.614* (15.190 – 15.600) 0.093 – 0.104 (2.362 – 2.642) 0.037 – 0.045 (0.940 – 1.143) 24 23 22 21 20 19 18 17 16 15 14 13 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) TYP NOTE 1 0.394 – 0.419 (10.007 – 10.643) 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 SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 0.014 – 0.019 (0.356 – 0.482) TYP 0.004 – 0.012 (0.102 – 0.305) 1 2 3 4 5 6 7 8 9 10 11 12 S24 (WIDE) 0996 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 LT1130A/LT1140A Series PACKAGE DESCRIPTIO U 24 LT1133A 23 22 21 20 19 18 17 16 15 14 13 Dimensions in inches (millimeters) unless otherwise noted. SW Package 28-Lead Plastic Small Outline (Wide 0.300) (LTC DWG # 05-08-1620) 0.291 – 0.299** (7.391 – 7.595) 0.010 – 0.029 × 45° 0.093 – 0.104 (2.362 – 2.642) (0.254 – 0.737) 0° – 8° TYP 0.050 (1.270) TYP 0.014 – 0.019 (0.356 – 0.482) TYP 0.394 – 0.419 (10.007 – 10.643) 0.037 – 0.045 (0.940 – 1.143) 0.697 – 0.712* (17.70 – 18.08) 28 27 26 25 24 23 22 21 20 19 18 17 16 15 NOTE 1 0.004 – 0.012 (0.102 – 0.305) 0.009 – 0.013 (0.229 – 0.330) NOTE 1 0.016 – 0.050 (0.406 – 1.270) 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 SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 S28 (WIDE) 0996 TYPICAL APPLICATION Sharing Power Supply Generator with a Second Transceiver 1µF + 1µF 1µF V+ 1 5V VCC 2 V– C2 – C2 + DRIVER IN RX OUT DRIVER IN RX OUT RX OUT RX OUT DRIVER IN RX OUT GND TO LOGIC TO RS232 LINE 1µF V+ 1 5V VCC NC RX IN DRIVER OUT RX IN DRIVER OUT RX IN DRIVER OUT RX IN RX IN ON/OFF 2 3 4 5 6 7 8 9 10 11 12 LT1141A 24 23 22 21 20 19 18 17 16 15 14 13 V– NC RX OUT DRIVER IN RX OUT DRIVER IN RX OUT DRIVER IN RX OUT RX OUT GND DRIVER DISABLE C1– 4 5 6 7 8 9 10 11 12 DRIVER OUT RX IN DRIVER OUT TO RS232 LINE RX IN RX IN RX IN DRIVER OUT RX IN RELATED PARTS PART NUMBER LT1237 LTC1327 LTC1337 LTC1338 LTC1348 DESCRIPTION 3-Driver/5-Receiver RS232 Transceiver 3-Driver/5-Receiver RS562 Transceiver 3-Driver/5-Receiver RS232 Transceiver 5-Driver/3-Receiver RS232 Transceiver 3-Driver/5-Receiver RS232 Transceiver COMMENTS Single 5V Supply with 0.1µF Capacitors Lower Power Upgrade for LT1137A 3.3V Operation Ultralow Power for DTE Applications Ultralow Power for DCE Applications 3.3V to 5V Operation LT1180A/LT1181A 2-Driver/2-Receiver RS232 Transceivers 12 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 q (408) 432-1900 FAX: (408) 434-0507q TELEX: 499-3977 q www.linear-tech.com + + C1+ 3 LT1130A • TA05 1130asfb LT/TP 0799 2K REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1993 + U TO LOGIC