LT1328 - 4Mbps IrDA Infrared Receiver


  • SIR, FIR and 4ppm Compatible
  • Low Frequency Ambient Rejection Loop
  • Supply Current: 2mA
  • 8-Lead MSOP and SO Packages
  • 5V Single Supply Operation
  • Optional High Frequency Noise Rejection

Typical Application

LT1328 Typical Application
LT1328 Typical Application


The LT®1328 is a photodiode receiver that supports IrDA® data rates up to 4Mbps as well as other modulation methods such as Sharp ASK and TV remote control. The LT1328 MSOP contains all the necessary circuitry to convert current pulses from an external photodiode to a digital TTL output while rejecting unwanted lower frequency interference. The LT1328 plus five external components is all that is required to make an IrDA compatible receiver.

Power requirements for the LT1328 are minimal—a single 5V supply and 2mA of quiescent current. Internal highpass filtering attenuates interfering signals such as sunlight, incandescent and fluorescent lamps and is selectable at Pin 7 for low or high data rates. The LT1328’s ease of use and flexibility make it an ideal solution for numerous other photodiode receiver applications. The LT1328 is available in the SO-8 as well as the tiny MSOP for size-critical applications.


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
LT1328CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LT1328CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LT1328CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1328CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1328IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1328IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes

LT1328 Package Drawing
LT1328 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
LT1328CMS8#PBF MS-8 C $3.15 $2.60 Yes
LT1328CMS8#TRPBF MS-8 C $2.66 Yes
LT1328CS8#PBF SO-8 C $2.65 $2.28 Yes
LT1328CS8#TRPBF SO-8 C $2.34 Yes
LT1328IS8#PBF SO-8 I $3.75 $3.05 Yes
LT1328IS8#TRPBF SO-8 I $3.11 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.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
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Click here to view our complete list of demo boards


  • IrDA Applications
  • Sharp/Newton
  • TV Remote
  • Noncontact Telemetry
  • Wireless Slave for Photographic Flash
  • Keyless Entry
  • Optical Data Transfer
  • Infrared Home Control Systems

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