Interface RS485/RS422 Transceivers

LTM2881 - Complete Isolated RS485/RS422 μModule Transceiver + Power

LTC1480 - 3.3V Ultralow Power RS485 Transceiver

Features

  • True RS485 from a Single 3.3V Supply
  • Low Power: ICC = 500µA Max with Driver Disabled
  • ICC = 600µA Max with Driver Enabled, No Load
  • 1µA Quiescent in Shutdown Mode
  • -7V to 12V Common Mode Range Permits ±7V Ground Difference Between Devices on the Data Line
  • Thermal Shutdown Protection
  • Power Up/Down Glitch-Free Driver Outputs Permit Live Insertion or Removal of Transceiver
  • Driver Maintains High Impedance in Three-State or with the Power Off
  • Up to 32 Transceivers on the Bus
  • 50ns Typical Driver Propagation Delays with 10ns Skew
  • Pin Compatible with the LTC485
  • Available in 8-Lead DIP and SO Packages

Typical Application

LTC1480 Typical Application
LTC1480 Typical Application

Description

The LTC®1480 is an ultralow power differential line transceiver which provides full RS485 compatibility while operating from a single 3.3V supply. It is designed for data transmission standard RS485 applications with extended common mode range (12V to -7V). It also meets the requirements of RS422 and features high speed operation up to 2.5Mb/s. The CMOS design offers significant power savings without sacrificing ruggedness against overload or ESD damage. Typical quiescent current is only 300µA while operating and 1µA in shutdown.

The driver and receiver feature three-state outputs, with the driver outputs maintaining high impedance over the entire common mode range. Excessive power dissipation caused by bus contention or faults is prevented by a thermal shutdown circuit which forces the driver outputs into a high impedance state. The receiver has a fail-safe feature which guarantees a high output state when the inputs are left open.

The LTC1480 is fully specified over the commercial and extended industrial temperature range. The LTC1480 is available in 8-pin SO and DIP packages.

Packaging

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
Drawing		 RoHS
LTC1480CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LTC1480CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1480CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1480IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LTC1480IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC1480IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes


LTC1480 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
(1-99)		 Price
(1k)*		 RoHS
LTC1480CN8#PBF N-8 C $3.15 $2.55 Yes
LTC1480CS8#PBF SO-8 C $3.40 $2.70 Yes
LTC1480CS8#TRPBF SO-8 C $2.76 Yes
LTC1480IN8#PBF N-8 I $3.85 $3.00 Yes
LTC1480IS8#PBF SO-8 I $4.40 $3.50 Yes
LTC1480IS8#TRPBF SO-8 I $3.56 Yes
Buy Now • Request Samples
* 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.

Click here to view our complete list of demo boards

Applications

  • Battery-Powered RS485/RS422 Applications
  • Low Power RS485/RS422 Transceiver
  • Level Translator

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