LTM2885
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LTM2885

6500VRMS Isolated RS485/RS422 μModule Transceiver + Power

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IBIS Model LTM2885 IBIS Model Download 297.03 KB
Part Models 3
1ku List Price Starting From $14.10
Features
  • RS485/RS422 Transceiver: 6500VRMS for 1 Minute
  • CSA (IEC/UL) Approved, File #255632
  • Isolated DC Power: 5V at 200mA
  • No External Components Required
  • 20Mbps or Low EMI 250kbps Data Rate
  • High ESD: ±15kV HBM on Transceiver Interface
  • High Common Mode Transient Immunity: 50kV/μs
  • Integrated Selectable 120Ω Termination
  • Extended Creepage and Clearance ~14.6mm
  • 1.62V to 5.5V Logic Supply Pin for Flexible Digital Interface
  • Maximum Continuous Working Voltage: 690VRMS
  • 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
  • 22mm × 9mm × 5.16mm Surface Mount BGA Package
Additional Details
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The LTM2885 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 6500VRMS 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 up to 50kV/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 ±25kV 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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file View Data Sheet (Rev.B)
Documentation View All Documentation
IBIS Model LTM2885 IBIS Model Download 297.03 KB
Part Models 3
1ku List Price Starting From $14.10
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LTM2885

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Data Sheet

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UPDATED 04/27/2017
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LTM2885: 6500VRMS Isolated RS485/RS422 μModule Transceiver + Power Data Sheet (Rev.B)

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UPDATED 01/04/2017
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LTM2885: 6500VRMS、絶縁型RS485/RS422 μModuleトランシーバ＋電源 データシート

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UPDATED 12/13/2016
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DC1794A - Demo Manual redirect icon

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UPDATED 03/26/2018
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UPDATED 01/28/2016
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Documentation

Product Selection Guide 1

Digital Isolation and Interface Technology Selection Guide

Product Selector Card 3

Digital Isolator Product Selection Guide
6.5kV Isolated RS485 + 1W Power
μModule Isolators

Safety and Regulatory Compliance 1

Safety and Regulatory Compliance Information

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2020-10-28

01:00

Protect your Innovations: from High Precision to High Power

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2017-09-18

03:14

Rugged ESD Demonstration

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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
LTM2885CY#PBF 42-Lead BGA (22mm x 9mm x 5.16mm) external-link
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LTM2885HY#PBF 42-Lead BGA (22mm x 9mm x 5.16mm) external-link
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LTM2885IY#PBF 42-Lead BGA (22mm x 9mm x 5.16mm) external-link
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Jul 21, 2021

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Ink Mark to Laser Mark Conversion for µModule

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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

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Jul 21, 2021

- 21_0159

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Ink Mark to Laser Mark Conversion for µModule

LTM2885CY#PBF

PRODUCTION

LTM2885HY#PBF

PRODUCTION

LTM2885IY#PBF

PRODUCTION

pdf

PCN21_0159_Form

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xls

Material_Report

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Delta Qualification Matrix

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Feb 28, 2020

- 20_0123

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

LTM2885CY#PBF

PRODUCTION

LTM2885HY#PBF

PRODUCTION

LTM2885IY#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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Isolated RS485 Transceiver

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LTM2881
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PRODUCTION

Complete Isolated RS485/RS422 μModule Transceiver + Power

Evaluation Kits 1

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DC1794A

LTM2885 Demo Board | 6.5kV Isolated RS485/RS422 μModule Transceiver + Power

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DC1794A

LTM2885 Demo Board | 6.5kV Isolated RS485/RS422 μModule Transceiver + Power

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DC1794A
LTM2885 Demo Board | 6.5kV Isolated RS485/RS422 μModule Transceiver + Power
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Product Detail

Demonstration circuit 1794A is an isolated RS485/RS422 μModule® transceiver + power featuring the LTM2885. The demo circuit is a 6500VRMS galvanically isolated RS485/ RS422 transceiver interface. The demo circuit features an EMI optimized circuit configuration and printed circuit board layout. The demo circuit operates from a single external supply on VCC. The part generates the output voltage VCC2 and communicates all necessary signaling across the isolation barrier using LTC’s isolator μModule technology.


 


Resources

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DC1794A - Design Files Download

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DC1794A - Schematic Download

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DC1794A - Demo Manual Download

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Evaluation Kits1

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DC1794A

LTM2885 Demo Board | 6.5kV Isolated RS485/RS422 μModule Transceiver + Power

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