ISO3086T

ACTIVE

20-Mbps full-duplex 2.5-kVrms isolated RS-485/RS-422 transceiver with integrated transformer driver

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Product details

Parameters

Duplex Full Data rate (Max) (Mbps) 20 Isolation rating (Vrms) 2500 Integrated isolated power Transformer driver Operating temperature range (C) -40 to 85 Fail safe Idle, Open, Short HBM ESD (kV) 11 Surge voltage capability (Vpk) 4000 open-in-new Find other Isolated RS-485 transceivers

Package | Pins | Size

SOIC (DW) 16 77 mm² 10.3 x 7.5 open-in-new Find other Isolated RS-485 transceivers

Features

  • Meets or Exceeds TIA/EIA-485-A
  • Signaling Rate up to 20 Mbps
  • 1/8 Unit Load – Up to 256 Nodes on a Bus
  • Thermal Shutdown Protection
  • Typical Efficiency > 60% (ILOAD = 100 mA) -
    see SLUU469
  • Low Bus Capacitance 7 pF (Typ)
  • 50-kV/µs Typical Transient Immunity
  • Fail-safe Receiver for Bus Open, Short, Idle
  • Logic Inputs are 5-V Tolerant
  • Bus-Pin ESD Protection
    • 11-kV HBM Between Bus-Pins and GND2
    • 6-kV HBM Between Bus-Pins and GND1
  • Safety and Regulatory Approvals
    • 4242 VPK Basic Insulation per DIN V VDE V
      0884-10 and DIN EN 61010-1
    • 2500 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC
      60950-1 and IEC 61010-1 Standards
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Description

The ISO3086T is an isolated differential line transceiver with integrated oscillator outputs that provide the primary voltage for an isolation transformer. The device is a full-duplex differential line transceiver for RS-485 and RS-422 applications that can easily be configured for half-duplex operation by connecting pin 11 to pin 14, and pin 12 to pin 13.

These devices are ideal for long transmission lines since the ground loop is broken to allow for a much larger common-mode voltage range. The symmetrical isolation barrier of the device is tested to provide 4242 VPK of isolation for 1 minute per VDE between the bus-line transceiver and the logic-level interface.

Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can cause damage to the transceiver and/or near-by sensitive circuitry if they are of sufficient magnitude and duration. These isolated devices can significantly increase protection and reduce the risk of damage to expensive control circuits.

The ISO3086T is specified for use from –40°C to 85°C.

open-in-new Find other Isolated RS-485 transceivers
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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet ISO3086T Isolated 5-V RS-485 Transceiver With Integrated Transformer Driver datasheet (Rev. D) Oct. 21, 2015
More literature CSA Certification (Rev. P) Nov. 19, 2019
More literature VDE certificate for basic isolation for DIN VDE V 0884-11:2017-01 (Rev. Q) Sep. 20, 2019
More literature UL Certification (Rev. N) Jul. 30, 2019
Application note How to isolate RS-485 for smallest size and highest reliability (Rev. A) Oct. 18, 2018
Application note How to isolate signal and power for an RS-485 system (Rev. B) Oct. 16, 2018
Application note Robust isolated RS-485 enables new industrial applications (Rev. A) Aug. 13, 2018
More literature Blog: Top 7 design questions about isolated RS-485 transceivers Aug. 06, 2018
Application note 3Q 2011 Issue Analog Applications Journal Sep. 16, 2011
Application note Isolated RS-485 transceivers support DMX512 stage lighting & special-effects app Sep. 16, 2011
Application note Журнал по применению аналоговых компонентов 3Q 2011 Sep. 01, 2011
User guide ISO3086T EVM-436 Description Nov. 09, 2010
User guide ISO1176T/35T/3086T Evaluation Module User's Guide (Rev. A) Jul. 13, 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
49
Description

This document describes the ISO1176T/35T/3086T Evaluation Module (EVM). It is used to evaluate the ISO1176T PROFIBUS Transceiver, the ISO35T RS-485 transceiver, or ISO3086T RS-485 Transceiver. Because the devices are similar transceivers, and the printed-circuit board is the same for all three EVMs (...)

Features

400V peak Isolation, 560V peak VIORM

- UL 1577, IEC 60747-5-2 (VDE 0884,Rev. 2),

- IEC 61010-1, IEC 60950-1 and CSA Apporoved

Meets or Exceeds the Requirments of EN 50170 and TIA/EIA RS-485

Signaling Rate up to 40 Mbps

Differential Output exceeds 2.1V (54 ohm Load)

Low Bus Capacitance-10pF (MAX)

50kV/us (...)

EVALUATION BOARD Download
ISO3086T EVM
ISO3086TEVM
49
Description

This document describes the ISO1176T/35T/3086T Evaluation Module (EVM). It is used to evaluate the ISO1176T PROFIBUS Transceiver, the ISO35T RS-485 Transceiver or the ISO3086T RS-485 Transceiver. Because the devices are similar the same printed-circuit board is used for all three EVMs. One manual (...)

Features
  • 4000-Vpeak Isolation
  • Bus-pin ESD Protection
  • -16 kV HBM Between Bus-Pins and GND2
  • -6 kV HBM Between logic-Pins and GND1
  • 1/8 Unit Load-Up to 256 Nodes on a Bus
  • Designed for RS-485 and RS-422 Applications
  • Signaling rates up to 20 Mbps
  • Thermal Shutdown protection
  • Low Bus Capacitance-7 pF (Typ)
  • 50 kV/us Typical (...)
EVALUATION BOARD Download
ISO3086T Small EVM
ISO3086TEVM-436
49
Description

The smaller EVM version shows the customer the space required for their design. This circuit provides an isolated, 20 Mbps, 3.3V to 5V RS-485 interface using the ISO3086T isolated RS-485 transceiver and the TPS76350 high accuracy linear regulator. This circuit achieves signal and power isolation and (...)

Features
  • 4000V peak Isolation
  • Bus pin ESD protection
    - 11KV HBM between bus pins and GND2
    - 6KV HBM between bus pins and GND1
  • 1/8 Unit load - Up to 256 nodes on a bus
  • Designed for RS-485 and RS-422 applications
  • Signaling rates up to 20 Mbps
  • Thermal shutdown protection
  • Low bus capacitance 7 pF (typ)
  • 50KV/us typical (...)
  • EVALUATION BOARD Download
    49
    Description

    This document describes the ISO1176T/35T/3086T Evaluation Module (EVM). It is used to evaluate the ISO1176T PROFIBUS Transceiver, the ISO35T RS-485 transceiver, or ISO3086T RS-485 Transceiver. Because the devices are similar transceivers, and the printed-circuit board is the same for all three EVMs (...)

    Features

    4000 Vpeak Isolation

    Bus-Pin ESD Protection

    - 16 kV HBM Betweent Bus-Pins and GND2

    - 6 kV HBM Between Bus-Pins and GND1

    1/8 unit Load - Up to 256 Nodes on a Bus

    Designed for RS-458 and RS-422 Applications

    Signaling Rates up to 1 Mbps

    Thermal Shutdown Protection

    Low Bus Capacitance - 16 pF (Typ)

    50 kV/us (...)

    Design tools & simulation

    SIMULATION MODEL Download
    SLLM135.ZIP (327 KB) - IBIS Model

    Reference designs

    REFERENCE DESIGNS Download
    Current Sense Reference Design for High-Switching Transient Three-Phase Inverter for Servo Drives
    TIDA-01455 — The TIDA-01455 is a reinforced isolated, in-line, shunt-based, precision-phase current sensing reference design for three-phase inverters. One of the challenges with GaN or SiC inverters at high PWM switching is accurate phase current sensing across the shunt in presence of noise due to the high PWM (...)
    document-generic Schematic
    REFERENCE DESIGNS Download
    20Mbps Isolated RS-485 Reference Design
    TIDA-00058 This reference design provides an isolated, 20-Mbps, 3.3-V to 5-V RS-485 interface using the ISO3086T isolated RS-485 transceiver and the TPS76350 high-accuracy linear regulator. This circuit achieves signal and power isolation and at the same time decreases board space and power consumption.
    document-generic Schematic

    CAD/CAE symbols

    Package Pins Download
    SOIC (DW) 16 View options

    Ordering & quality

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