NVE IL3185-3E

  • NVE

Product Features

  • Low cost passive input RS-485 isolated transceiver
  • Bus ESD protection 15kV
  • Typical common mode rejection of 20 kV/µs
  • Isolation of 2.5 kVRMS(1 minute)
  • No carrier or clock for low EMI emissions and susceptibility
  • Thermal shutdown protection
  • UL 1577 recognized; IEC 60747-5-5 (VDE 0884) certified
  • 0.15″ 16-pin SOIC package


  • Scientific Instrumentation
  • Test and Measurement
  • Compliant


The IL3185-3E low cost passive input RS-485 isolated transceiver from NVE is designed to galvanically isolate bidirectional data communication over balanced transmission lines. The IL3185 series delivers at least 1.5V into a 54Ω load for excellent data integrity over long cables, and is also compatible with 3V input supplies, allowing interfacing to standard microcontrollers without additional level shifting. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life. This particular device uses NVE’s patented IsoLoop spintronic Giant Magnetoresistance (GMR) technology and comes in a 0.15″ 16-pin SOIC package.

  • Surface-mount low cost passive input RS-485 isolated transceiver
  • Power supply VDD1 3.3V to 5V, VDD2 4.5V to 5.5V
  • Data rate of 5Mbps
  • Bus ESD protection of 15kV
  • Isolation of 2,500 VRMS (1 minute)
  • Temperature range of −40°C to +85°C
  • Typical common mode rejection 20kV/μs
  • No carrier or clock for low EMI emissions and susceptibility
  • Thermal shutdown protection
  • Typical propagation delay of 90ns (5V)
  • Coil input resistance of 85Ω typical
  • UL 1577 recognised; IEC 60747-5-5 (VDE 0884) certified
  • 0.15″ 16-pin SOIC package

The IL3185 has current limiting and thermal shutdown features to protect against output short circuits and bus contentions that may cause excessive power dissipation, and also incorporate a “fail-safe if open” design, ensuring a logic high on R if the bus lines are disconnected or “floating.”

Typical applications for the IL3185 series include:

  • P.O.S. Systems
  • Security networks
  • Building environmental controls
  • Industrial control networks
  • Gaming systems
  • Factory automation

The below table gives the recommended operating conditions for the NVE IL3185 high speed passive input RS-485 differential bus transceiver series including the IL3185-3E:

NVE IL3185-3E Specifications


Weight 0.02500 kg
Dimensions 10.00 × 3.99 × 1.40 mm
Series / Model

Additional Features

Low cost passive input RS-485 isolated transceiverBus ESD protection 15kVTypical common mode rejection of 20 kV/µsIsolation of 2.5 kVRMS(1 minute)No carrier or clock for low EMI emissions and suscep

Temperature Range (°C)

Supply Voltage


Maximum Data Rate

Propagation Delay

Creepage Distance

RoHS Compliant Product – NVE

This product is available fully compliant to the RoHS EU directive 2011/65/EU.

NVE IL31 Series Technical Library

We are pleased to provide you with a range of additional content including videos, product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:



NVE IL3185 & IL3122 Passive isolated transceivers series datasheet
Isolated logic level shifters
Isolated RS485 and RS422
Making RS485 system work
Package, tape-and-reel and pad layout specifications
GMR in isolation
Isolator high voltage safety standards
Isolated data converter
Power supply bypass capacitor selection
Pb free and S-Pb solder profiles
IsoLoop isolators for high efficiency power control
Isoloop isolators have low emissions, low emissions, low EMI susceptibility and excellent magnetic immunity
Isolating data converters
Isolated I S minimises distortion
IsoLoop isolators have best in class endurance voltage
Profibus complianc, a hardware design guide
Isolated CAN reference design
IsoLoop isolators have best-in-Class transient immunity
NVE isolators feature eight millimeter creepage
Isoloop isolators enable next generation switching mode power suppliers
Isoloop isolators have excellent thermal characteristics
Glossary terms

NVE IL3185-3E

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