MILPITAS, CA – November 15, 2016 – Linear Technology Corporation introduces the
LTM2885, an isolated RS485 µModule® transceiver for guarding against large ground-to-grounddifferentials. Many industrial, utility, medical, military, and intrinsic safety applications requireisolation components with increased voltage and spatial separation for human safety. TheLTM2885 provides 6500VRMS reinforced isolation between the logic level interface and thetransceiver bus pins, far surpassing the IEC 60747 basic and reinforced isolation standards. Withcreepage and clearance distances greater than 14mm and a distance through insulation (DTI)greater than 0.2mm, the LTM2885 exceeds many overvoltage category II and material groupIIIA equipment requirements, including the provision of two means of patient protection
(MOPP) for medical equipment per IEC 60601-1.

The LTM2885 provides an extensive feature set to support its robust isolation. A ±15kV
ESD-protected RS485 transceiver operates at 20Mbps or low EMI 250kbps, with uninterrupted
communication guaranteed for common mode transients up to 50kV/µs. An internal low EMI
DC/DC converter powers the transceiver and provides an isolated 1W supply output for
powering external support components. Integrated selectable termination allows cables to be
properly terminated, with the flexibility to add or remove termination anywhere on the bus via
software control. Operating from a 5V supply, the LTM2885 requires no additional external
components, providing a self-contained µModule solution for isolated RS485 serial data
communications.

The LTM2885 is offered in commercial, industrial and automotive versions, supporting
operating temperature ranges from 0°C to 70°C, –40°C to 85°C, and –40°C to 105°C,
respectively. The LTM2885 is offered in a 22mm x 9mm x 5.16mm surface mount BGA
package; all integrated circuits and passive components are housed in this Linear Technology,
RoHS-compliant µModule package. Pricing starts at $11.98 each in 1,000-piece quantities.
Please visit www.linear.com/product/LTM2885 for more product selection and information.

Summary of Features: LTM2885

。 Isolated RS485/RS422 Transceiver: 6500VRMS

。Isolated DC Power: 5V at Up to 200mA

。Reinforced Insulation & Creepage > 14mm

。 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

。1.62V to 5.5V Logic Supply Pin for Flexible Digital Interface

。General Purpose CMOS Isolated Channel

。 22mm x 9mm x 5.16mm Surface Mount BGA Package

The USA list pricing shown is for budgetary use only. International prices may differ due to
local duties, taxes, fees and exchange rates.

Source：http://www.linear.com/