LTM2885
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LTM2885

6500VRMS Isolated RS485/RS422 μModule Transceiver + Power

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Info: : PRODUCTION tooltip
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Part Details
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
Part Models 3
1ku List Price Starting From $14.10

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

LTM2885CY#PBF

PRODUCTION

LTM2885HY#PBF

PRODUCTION

LTM2885IY#PBF

PRODUCTION

Feb 28, 2020

- 20_0123

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

LTM2885CY#PBF

PRODUCTION

LTM2885HY#PBF

PRODUCTION

LTM2885IY#PBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jul 21, 2021

- 21_0159

arrow down

Ink Mark to Laser Mark Conversion for µModule

LTM2885CY#PBF

PRODUCTION

LTM2885HY#PBF

PRODUCTION

LTM2885IY#PBF

PRODUCTION

Feb 28, 2020

- 20_0123

arrow down

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

LTM2885CY#PBF

PRODUCTION

LTM2885HY#PBF

PRODUCTION

LTM2885IY#PBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

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

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

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.


 


Tools & Simulations

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