LTM2881
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LTM2881

Complete Isolated RS485/RS422 μModule Transceiver + Power

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IBIS Model LTM2881 IBIS Model Download 291.00KB
Part Models 14
1ku List Price Starting From $9.95
Features
  • RS485/RS422 Transceiver: 2500VRMS for 1 Minute
  • UL-CSA Recognized File #E151738
  • CSA Component Acceptance Notice 5A
  • Isolated DC Power: 5V at Up to 200mA
  • No External Components Required
  • 20Mbps or Low EMI 250kbps Data Rate
  • High ESD: ±15kV HBM on Transceiver Interface
  • High Common Mode Transient Immunity: 30kV/μs
  • Integrated Selectable 120Ω Termination
  • 3.3V (LTM2881-3) or 5.0V (LTM2881-5) Operation
  • 1.62V to 5.5V Logic Supply Pin for Flexible Digital Interface
  • Maximum Continuous Working Voltage: 560VPEAK
  • High Input Impedance Failsafe RS485 Receiver
  • Current Limited Drivers and Thermal Shutdown
  • Compatible with TIA/EIA-485-A and PROFIBUS
  • High Impedance Output During Internal Fault Condition
  • Low Current Shutdown Mode (< 10μA)
  • General Purpose CMOS Isolated Channel
  • 15mm × 11.25mm BGA and LGA Packages
Additional Details
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The LTM2881 is a complete galvanically isolated full-duplex RS485/RS422 μModule® (micromodule) transceiver. No external components are required. A single supply powers both sides of the interface through an integrated, isolated, low noise, efficient 5V output DC/DC converter.

Coupled inductors and an isolation power transformer provide 2500VRMS of isolation between the line transceiver and the logic interface. This device is ideal for systems where the ground loop is broken allowing for large common mode voltage variation. Uninterrupted communication is guaranteed for common mode transients greater than 30kV/μs.

Maximum data rates are 20Mbps or 250kbps in slew limited mode. Transmit data, DI and receive data, RO, are implemented with event driven low jitter processing. The receiver has a one-eighth unit load supporting up to 256 nodes per bus. A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply.

Enhanced ESD protection allows this part to withstand up to ±15kV (human body model) on the transceiver interface pins to isolated supplies and ±10kV through the isolation barrier to logic supplies without latch-up or damage.

Applications

  • Isolated RS485/RS422 Interface
  • Industrial Networks
  • Breaking RS485 Ground Loops
  • Isolated PROFIBUS-DP Networks
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Documentation View All Documentation
IBIS Model LTM2881 IBIS Model Download 291.00KB
Part Models 14
1ku List Price Starting From $9.95
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LTM2881

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Data Sheet

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UPDATED 11/23/2016
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LTM2881: Complete Isolated RS485/RS422 μModule Transceiver + Power Data Sheet

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UPDATED 10/15/2014
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LTM2881: 絶縁型 RS485/RS422 μModule トランシーバ＋電源 データシート

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Safety and Regulatory Compliance

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UPDATED 01/28/2016
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UPDATED 01/28/2016
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安全規格認証や適合の取得状況 redirect icon

Application Note

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UPDATED 02/05/2010
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AN125 - Using the LTM2881 as an Isolated 5V Power Supply redirect icon

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User Guide

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UPDATED 06/02/2010
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DC1503A - Demo Manual redirect icon

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UPDATED 12/23/2010
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DC1746A - Demo Manual redirect icon

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Reliability Data

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UPDATED 03/26/2018
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R596 Reliability Data redirect icon

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UPDATED 01/30/2018
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Documentation

Technical Documents 7
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Data Sheet 1

LTM2881: Complete Isolated RS485/RS422 μModule Transceiver + Power Data Sheet

Reliability Data 1

R596 Reliability Data

User Guide 2

DC1503A - Demo Manual
DC1746A - Demo Manual

Application Note 1

AN125 - Using the LTM2881 as an Isolated 5V Power Supply

Informational 1

μModule Design and Manufacturing Resources

Safety and Regulatory Compliance 1

Safety and Regulatory Compliance Information

Safety and Regulatory Compliance 1

Safety and Regulatory Compliance Information

Product Selector Card 5

Ultra Rugged ±60V RS485 Transceivers
RS485 Quick Guide
LTM2881 - Isolated RS485 + 1W Power
μModule Isolators
Digital Isolator Product Selection Guide

Product Selection Guide 1

Digital Isolation and Interface Technology Selection Guide

Video

3

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Video

2020-10-28

01:00

Protect your Innovations: from High Precision to High Power

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Video

2017-09-14

07:04

Isolated RS485 Transceiver with Power in One Small Package - LTM2881

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Video

2017-09-18

LTM2881 Video Product Brief

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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 Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTM2881CV-3#PBF 32-Lead LGA (15mm x 11.25mm x 2.82mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881CV-5#PBF 32-Lead LGA (15mm x 11.25mm x 2.82mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881CY-3#PBF 32-Lead BGA (15mm x 11.25mm x 3.42mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881CY-5#PBF 32-Lead BGA (15mm x 11.25mm x 3.42mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881HV-3#PBF 32-Lead LGA (15mm x 11.25mm x 2.82mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881HV-5#PBF 32-Lead LGA (15mm x 11.25mm x 2.82mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881HY-3#PBF 32-Lead BGA (15mm x 11.25mm x 3.42mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881HY-5#PBF 32-Lead BGA (15mm x 11.25mm x 3.42mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881IV-3#PBF 32-Lead LGA (15mm x 11.25mm x 2.82mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881IV-5#PBF 32-Lead LGA (15mm x 11.25mm x 2.82mm) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTM2881IY-3#PBF 32-Lead BGA (15mm x 11.25mm x 3.42mm) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTM2881IY-5#PBF 32-Lead BGA (15mm x 11.25mm x 3.42mm) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTM2881MPY-3#PBF 32-Lead BGA (15mm x 11.25mm x 3.42mm) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTM2881MPY-5#PBF 32-Lead BGA (15mm x 11.25mm x 3.42mm) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

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Jul 21, 2021

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Ink Mark to Laser Mark Conversion for µModule

LTM2881CV-3#PBF

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LTM2881CY-3#PBF

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LTM2881CY-5#PBF

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Material_Report

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Delta Qualification Matrix

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Feb 28, 2020

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Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

LTM2881CV-3#PBF

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LTM2881CV-5#PBF

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LTM2881CY-3#PBF

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LTM2881CY-5#PBF

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LTM2881HV-3#PBF

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LTM2881HV-5#PBF

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LTM2881HY-5#PBF

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PCN20_0123_Form

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Test Correlation Report

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Qualification Results Summary

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Jul 21, 2021

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Ink Mark to Laser Mark Conversion for µModule

LTM2881CV-3#PBF

PRODUCTION

LTM2881CV-5#PBF

PRODUCTION

LTM2881CY-3#PBF

PRODUCTION

LTM2881CY-5#PBF

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LTM2881HV-3#PBF

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LTM2881HV-5#PBF

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LTM2881HY-3#PBF

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pdf

PCN21_0159_Form

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xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download
Feb 28, 2020

- 20_0123

arrow down

Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

LTM2881CV-3#PBF

PRODUCTION

LTM2881CV-5#PBF

PRODUCTION

LTM2881CY-3#PBF

PRODUCTION

LTM2881CY-5#PBF

PRODUCTION

LTM2881HV-3#PBF

PRODUCTION

LTM2881HV-5#PBF

PRODUCTION

LTM2881HY-3#PBF

PRODUCTION

LTM2881HY-5#PBF

PRODUCTION

LTM2881IV-3#PBF

PRODUCTION

LTM2881IV-5#PBF

PRODUCTION

LTM2881IY-3#PBF

PRODUCTION

LTM2881IY-5#PBF

PRODUCTION

LTM2881MPY-3#PBF

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LTM2881MPY-5#PBF

PRODUCTION

pdf

PCN20_0123_Form

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xls

Material_Report

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Test Correlation Report
Other

pdf

Qualification Results Summary

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Software & Part Ecosystem

Parts Product Life Cycle Description

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6500VRMS Isolated RS485/RS422 μModule Transceiver + Power

Evaluation Kits 4

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DC1746A-B

LTM2881-5 Low EMI Test Board (For EMI Evaluation Purposes Only, No VL & No GPIO)

reference details image

DC1503A-B

LTM2881-5 RS485 | µModule Isolator Demo Board (5.0V Supply)

reference details image

DC1746A-A

LTM2881-3 Low EMI Test Board (For EMI Evaluation Purposes Only, No VL & No GPIO)

reference details image

DC1503A-A

LTM2881-3 RS485 | µModule Isolator Demo Board (3.3V Supply)

Evaluation Kits4

evaluation kit item images

DC1746A-B

LTM2881-5 Low EMI Test Board (For EMI Evaluation Purposes Only, No VL & No GPIO)
evaluation kit item images

DC1503A-B

LTM2881-5 RS485 | µModule Isolator Demo Board (5.0V Supply)
evaluation kit item images

DC1746A-A

LTM2881-3 Low EMI Test Board (For EMI Evaluation Purposes Only, No VL & No GPIO)
evaluation kit item images

DC1503A-A

LTM2881-3 RS485 | µModule Isolator Demo Board (3.3V Supply)

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