產品詳細資料

Rating Catalog Isolation rating Basic Data rate (max) (Mbps) 1 Working isolation voltage (VIOWM) (Vrms) 400 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 2500 CMTI (min) (kV/µs) 25 Operating temperature range (°C) -40 to 85 Type RS-485
Rating Catalog Isolation rating Basic Data rate (max) (Mbps) 1 Working isolation voltage (VIOWM) (Vrms) 400 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 2500 CMTI (min) (kV/µs) 25 Operating temperature range (°C) -40 to 85 Type RS-485
SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • Designed for RS-485 and RS-422 Applications
  • Signaling Rates up to 1 Mbps
  • 1/8 Unit Load – up to 256 Nodes on a Bus
  • Thermal Shutdown Protection
  • Typical Efficiency > 60% (I LOAD = 100 mA) - See SLUU470
  • Low-Driver Bus Capacitance 16 pF (Typical)
  • Fail-Safe Receiver for Bus Open, Short, Idle
  • Logic Inputs are 5-V Tolerant
  • 50-kV/µs Typical Transient Immunity
  • Bus-Pin ESD Protection
    • 16-kV HBM Between Bus-Pins and GND2
    • 6-kV HBM Between Bus-Pins and GND1
  • Safety and Regulatory Approvals
    • 4242 V PK Basic Insulation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 2500 V RMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 Standards

  • Designed for RS-485 and RS-422 Applications
  • Signaling Rates up to 1 Mbps
  • 1/8 Unit Load – up to 256 Nodes on a Bus
  • Thermal Shutdown Protection
  • Typical Efficiency > 60% (I LOAD = 100 mA) - See SLUU470
  • Low-Driver Bus Capacitance 16 pF (Typical)
  • Fail-Safe Receiver for Bus Open, Short, Idle
  • Logic Inputs are 5-V Tolerant
  • 50-kV/µs Typical Transient Immunity
  • Bus-Pin ESD Protection
    • 16-kV HBM Between Bus-Pins and GND2
    • 6-kV HBM Between Bus-Pins and GND1
  • Safety and Regulatory Approvals
    • 4242 V PK Basic Insulation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 2500 V RMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 Standards

The ISO35T 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 4242V PK of isolation per VDE for 60s 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. The ISO35T can significantly reduce the risk of data corruption and damage to expensive control circuits.

The ISO35T is specified for use from –40°C to 85°C.

The ISO35T 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 4242V PK of isolation per VDE for 60s 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. The ISO35T can significantly reduce the risk of data corruption and damage to expensive control circuits.

The ISO35T is specified for use from –40°C to 85°C.

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ISO1432 現行 具 EMC 保護、12-Mbps、全雙工、5-kVrms 隔離式 RS-485 和 RS-422 收發器 This is a non-power integrated 12-Mbps device with higher isolation rating, increased transceiver EMC protection, wider supply range and stronger CMTI

技術文件

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類型 標題 日期
* Data sheet ISO35T Isolated 3.3V RS-485 Transceiver With Integrated Transformer Driver datasheet (Rev. E) PDF | HTML 2023年 8月 18日
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. W) 2024年 1月 31日
Certificate CSA Certificate for ISOxxTDW 2023年 2月 21日
Product overview Isolation for RS-485 PDF | HTML 2022年 8月 21日
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 2 2022年 8月 10日
Application brief Robust Isolated RS-485 Enables New Industrial Applications (Rev. C) PDF | HTML 2022年 7月 26日
Application brief How to Isolate RS-485 for Smallest Size and Highest Reliability (Rev. C) PDF | HTML 2022年 7月 6日
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 2021年 11月 16日
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 2021年 6月 11日
Application brief How to Isolate Signal and Power for an RS-485 System (Rev. C) PDF | HTML 2021年 5月 25日
Analog Design Journal 3Q 2011 Issue Analog Applications Journal 2011年 9月 16日
Analog Design Journal Isolated RS-485 transceivers support DMX512 stage lighting & special-effects app 2011年 9月 16日
User guide ISO35T EVM-434 Description. (Rev. B) 2011年 6月 1日
EVM User's guide ISO1176T/35T/3086T Evaluation Module User's Guide (Rev. A) 2010年 7月 13日

設計與開發

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開發板

ISO1176TEVM — ISO1176T 評估模組

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 (...)

使用指南: PDF
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開發板

ISO35TEVM — ISO35T 評估模組

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 (...)

使用指南: PDF
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開發板

ISO35TEVM-434 — ISO35T 小型 EVM

The smaller EVM version shows the customer the spaced required for their design. This circuit provides an isolated, 20 Mbps. 3.3V to 3.3V RS-485 interface using the ISO35T, isolated RS-485 transceiver and the TPS76333 high accuracy linear regulator. This circuit achieves signal and power (...)

使用指南: PDF
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模擬型號

ISO35T IBIS MODEL (Rev. A)

SLLM134A.ZIP (187 KB) - IBIS Model
參考設計

TIDA-00057 — 1Mbps 隔離 RS-485 參考設計

This reference design provides an isolated, 1-Mbps, 3.3-V to 3.3-V RS-485 interface using the ISO35T, isolated RS-485 transceiver and the TPS76333 high-accuracy linear regulator. This board achieves signal and power isolation and at the same time decreases board space and power consumption.
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (DW) 16 Ultra Librarian

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