1. Products
  2. Interface and Isolation
  3. Multiprotocol Transceivers
  4. LTC1344


Features and Benefits

  • Software-Selectable Cable Termination for:
    • RS232 (V.28)
    • RS423 (V.10)
    • RS422 (V.11)
    • EIA530
    • EIA530-A
  • Outputs Won’t Load the Line with Power Off

Product Details

The LTC1344 features six software-selectable multiprotocol cable terminators. Each terminator can be configured as an RS422 (V.11) 100Ω minimum differential load, V.35 T-network load or an open circuit for use with RS232 (V.28) or RS423 (V.10) transceivers that provide their own termination. When combined with the LTC1343, the LTC1344 forms a complete software-selectable multiprotocol serial port. A data bus latch feature allows sharing of the select lines between multiple interface ports.

The LTC1344 is available in a 24-lead SSOP.


  • Data Networking
  • CSU and DSU
  • Data Routers

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LTC1344CG#PBF Material Declaration Reliability Data 24-Lead SSOP
LTC1344CG#TRPBF Material Declaration Reliability Data 24-Lead SSOP
LTC1344IG#PBF Material Declaration Reliability Data 24-Lead SSOP
LTC1344IG#TRPBF Material Declaration Reliability Data 24-Lead SSOP
Wafer Fabrication Data R277 Reliability Data

PCN-PDN Information

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Sample & Buy

Ordering FAQs

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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