Product details

Type RS-485 Data rate (Max) (Mbps) 20 Isolation rating (Vrms) 2500 Surge voltage capability (Vpk) 4000 Operating temperature range (C) -40 to 85 Rating Catalog
Type RS-485 Data rate (Max) (Mbps) 20 Isolation rating (Vrms) 2500 Surge voltage capability (Vpk) 4000 Operating temperature range (C) -40 to 85 Rating Catalog
SOIC (DW) 16 77 mm² 10.3 x 7.5
  • 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
  • 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

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.

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.

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Design & development

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

Evaluation board

ISO1176TEVM — ISO1176T Evaluation Module

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 (...)

Not available on TI.com
Evaluation board

ISO3086TEVM — ISO3086T EVM

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 (...)

Not available on TI.com
Evaluation board

ISO3086TEVM-436 — ISO3086T Small EVM

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 (...)

Not available on TI.com
Evaluation board

ISO35TEVM — ISO35T Evaluation Module

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 (...)

Not available on TI.com
Simulation model

ISO3086T IBIS Model ISO3086T IBIS Model

Reference designs

TIDA-00058 — 20Mbps Isolated RS-485 Reference Design

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.
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SOIC (DW) 16 View options

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