LTM2881

PRODUCTION

Complete Isolated RS485/RS422 μModule Transceiver + Power

Part Models: 14
1ku List Price: Starting From $9.95

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Overview

RS485/RS422 Transceiver: 2500V_RMS 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: 560V_PEAK
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

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 2500V_RMS 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

Part Models: 14
1ku List Price: Starting From $9.95

Documentation

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)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881CV-5#PBF	32-Lead LGA (15mm x 11.25mm x 2.82mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881CY-3#PBF	32-Lead BGA (15mm x 11.25mm x 3.42mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881CY-5#PBF	32-Lead BGA (15mm x 11.25mm x 3.42mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881HV-3#PBF	32-Lead LGA (15mm x 11.25mm x 2.82mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881HV-5#PBF	32-Lead LGA (15mm x 11.25mm x 2.82mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881HY-3#PBF	32-Lead BGA (15mm x 11.25mm x 3.42mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881HY-5#PBF	32-Lead BGA (15mm x 11.25mm x 3.42mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881IV-3#PBF	32-Lead LGA (15mm x 11.25mm x 2.82mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881IV-5#PBF	32-Lead LGA (15mm x 11.25mm x 2.82mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881IY-3#PBF	32-Lead BGA (15mm x 11.25mm x 3.42mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881IY-5#PBF	32-Lead BGA (15mm x 11.25mm x 3.42mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881MPY-3#PBF	32-Lead BGA (15mm x 11.25mm x 3.42mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM2881MPY-5#PBF	32-Lead BGA (15mm x 11.25mm x 3.42mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 21, 2021 - 21_0159 Ink Mark to Laser Mark Conversion for µModule
		PCN21_0159_Form Material_Report Delta Qualification Matrix
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
LTM2881MPY-5#PBF	PRODUCTION
Feb 28, 2020 - 20_0123 Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia
		PCN20_0123_Form Material_Report Test Correlation Report Other Qualification Results Summary
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
LTM2881MPY-5#PBF	PRODUCTION