Interface RS485/RS422 Transceivers

LTM2881 - Complete Isolated RS485/RS422 μModule Transceiver + Power

LTC1484 - Low Power RS485 Transceiver with Receiver Fail-Safe

Features

  • No Damage or Latchup to ±15kV ESD (Human Body Model), IEC-1000-4-2 Level 4 Contact (±8kV) and Level 3 (±8kV) Air Gap Specifications
  • Guaranteed High Receiver Output State for Floating, Shorted or Terminated Inputs with No Signal Present
  • Drives Low Cost Residential Telephone Wires
  • Low Power: ICC = 700μA Max with Driver Disabled
  • ICC = 900μA Max for Driver Enable with No Load
  • 20μA Max Quiescent Current in Shutdown Mode
  • Single 5V Supply
  • -7V to 12V Common Mode Range Permits ±7V Ground Difference Between Devices on the Data Line
  • Power Up/Down Glitch-Free Driver Outputs
  • Up to 32 Transceivers on the Bus
  • Pin Compatible with the LTC485
  • Available in 8-Lead MSOP, PDIP and SO Packages

Typical Application

LTC1484 Typical Application
LTC1484 Typical Application

Description

The LTC®1484 is a low power RS485 compatible transceiver. In receiver mode, it offers a fail-safe feature which guarantees a high receiver output state when the inputs are left open, shorted together or terminated with no signal present. No external components are required to ensure the high receiver output state. Both driver and receiver feature three-state outputs with separate receiver and driver control pins. The driver outputs maintain high impedance over the entire common mode range when three-stated. Excessive power dissipation caused by bus contention or faults is prevented by a thermal shutdown circuit that forces the driver outputs into a high impedance state. Enhanced ESD protection allows the LTC1484 to withstand ±15kV (human body model), IEC-1000-4-2 level 4 (±8kV) contact and level 3 (±8kV) air discharge ESD without latchup or damage. The LTC1484 is fully specified over the commercial and industrial temperature ranges and is available in 8-lead MSOP, PDIP and SO 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
LTC1484CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LTC1484CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC1484CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LTC1484CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1484CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1484IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LTC1484IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC1484IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes


LTC1484 Package Drawing
LTC1484 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
LTC1484CMS8#PBF MS-8 C $2.85 $2.00 Yes
LTC1484CMS8#TRPBF MS-8 C $2.06 Yes
LTC1484CN8#PBF N-8 C $2.25 $1.65 Yes
LTC1484CS8#PBF SO-8 C $2.35 $1.75 Yes
LTC1484CS8#TRPBF SO-8 C $1.81 Yes
LTC1484IN8#PBF N-8 I $2.90 $2.15 Yes
LTC1484IS8#PBF SO-8 I $3.10 $2.25 Yes
LTC1484IS8#TRPBF SO-8 I $2.31 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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