LT1132A - Advanced Low Power 5V RS232 Drivers/Receivers with Small Capacitors (Includes LT1130 thru LT1141)


  • 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

Typical Application

LT1132A Typical Application
LT1132A Typical Application


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.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LT1132ACN#PBF N-24 N C 05-08-1510 (N24) Yes
LT1132ACSW#PBF SW-24 SW C 05-08-1620 (SW24) Yes
LT1132ACSW#TRPBF SW-24 SW C 05-08-1620 (SW24) Yes
LT1132AISW#PBF SW-24 SW I 05-08-1620 (SW24) Yes
LT1132AISW#TRPBF SW-24 SW I 05-08-1620 (SW24) Yes

LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing
LT1132A Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LT1132ACN#PBF N-24 C $4.83 $3.90 Yes
LT1132ACSW#PBF SW-24 C $5.08 $4.10 Yes
LT1132ACSW#TRPBF SW-24 C $4.20 Yes
LT1132AISW#PBF SW-24 I $5.80 $4.90 Yes
LT1132AISW#TRPBF SW-24 I $5.00 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

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