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Isolated RS-485 transceivers

ISO1432

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EMC protected, 12-Mbps, full-duplex, 5-kVrms isolated RS-485 & RS-422 transceiver

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Data sheet

ISO1432

ACTIVE
Data sheet Order now

Product details

Rating Catalog Integrated isolated power No Isolation rating Basic, Reinforced Duplex Full Data rate (max) (Mbps) 12 Working isolation voltage (VIOWM) (Vrms) 1060 Surge isolation voltage (VIOSM) (VPK) 6000, 10000 Transient isolation voltage (VIOTM) (VPK) 7071 Withstand isolation voltage (VISO) (Vrms) 5000 VCC1 (min) (V) 1.71 VCC1 (max) (V) 5.5 VCC2 (min) (V) 3 VCC2 (max) (V) 5.5 Fail safe Idle, Open, Short CMTI (min) (kV/µs) 85 Operating temperature range (°C) -40 to 125
Rating Catalog Integrated isolated power No Isolation rating Basic, Reinforced Duplex Full Data rate (max) (Mbps) 12 Working isolation voltage (VIOWM) (Vrms) 1060 Surge isolation voltage (VIOSM) (VPK) 6000, 10000 Transient isolation voltage (VIOTM) (VPK) 7071 Withstand isolation voltage (VISO) (Vrms) 5000 VCC1 (min) (V) 1.71 VCC1 (max) (V) 5.5 VCC2 (min) (V) 3 VCC2 (max) (V) 5.5 Fail safe Idle, Open, Short CMTI (min) (kV/µs) 85 Operating temperature range (°C) -40 to 125
SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • Compatible with TIA/EIA-485-A
  • PROFIBUS compatible at 5V bus-side supply
  • Bus I/O protection
    • ±30kV HBM
    • ±16kV IEC 61000-4-2 Contact discharge
    • ±4kV IEC 61000-4-4 Electrical fast transient
  • Low-EMI 500kbps, 12Mbps and 50Mbps Data Rates
  • 1.71V to 5.5V logic-side supply (VCC1), 3V to 5.5V bus-side supply (VCC2)
  • Failsafe receiver for bus open, short, and idle
  • 1/8 Unit load up to 256 nodes on bus
  • 100kV/µs (typical) high common-mode transient immunity
  • Extended temperature range from –40°C to 125°C
  • Glitch-free power-up and power-down for hot plug-in
  • Wide-body SOIC-16 package
  • Pin compatible to most isolated RS-485 transceivers
  • Safety-related certifications:
    • 7071VPK VIOTM and 1500VPK VIORM (reinforced and basic options) per DIN VDE V 0884-11:2017-01
    • 5000VRMS isolation for 1 minute per UL 1577
    • IEC 60950-1, IEC 62368-1, IEC 60601-1 and IEC 61010-1 certifications
    • CQC, TUV, and CSA approvals
  • Compatible with TIA/EIA-485-A
  • PROFIBUS compatible at 5V bus-side supply
  • Bus I/O protection
    • ±30kV HBM
    • ±16kV IEC 61000-4-2 Contact discharge
    • ±4kV IEC 61000-4-4 Electrical fast transient
  • Low-EMI 500kbps, 12Mbps and 50Mbps Data Rates
  • 1.71V to 5.5V logic-side supply (VCC1), 3V to 5.5V bus-side supply (VCC2)
  • Failsafe receiver for bus open, short, and idle
  • 1/8 Unit load up to 256 nodes on bus
  • 100kV/µs (typical) high common-mode transient immunity
  • Extended temperature range from –40°C to 125°C
  • Glitch-free power-up and power-down for hot plug-in
  • Wide-body SOIC-16 package
  • Pin compatible to most isolated RS-485 transceivers
  • Safety-related certifications:
    • 7071VPK VIOTM and 1500VPK VIORM (reinforced and basic options) per DIN VDE V 0884-11:2017-01
    • 5000VRMS isolation for 1 minute per UL 1577
    • IEC 60950-1, IEC 62368-1, IEC 60601-1 and IEC 61010-1 certifications
    • CQC, TUV, and CSA approvals

The ISO14xx devices are galvanically-isolated differential line transceivers for TIA/EIA RS-485 and RS-422 applications. These noise-immune transceivers are designed to operate in harsh industrial environments. The bus pins of these devices can endure high levels of IEC electrostatic discharge (ESD) and IEC electrical fast transient (EFT) events which eliminates the need for additional components on bus for system-level protection. The devices are available for both basic and reinforced isolation (see Reinforced and Basic Isolation Options).

The ISO14xx devices are galvanically-isolated differential line transceivers for TIA/EIA RS-485 and RS-422 applications. These noise-immune transceivers are designed to operate in harsh industrial environments. The bus pins of these devices can endure high levels of IEC electrostatic discharge (ESD) and IEC electrical fast transient (EFT) events which eliminates the need for additional components on bus for system-level protection. The devices are available for both basic and reinforced isolation (see Reinforced and Basic Isolation Options).
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Type Title Date
* Data sheet ISO14xx 5kVRMS Isolated RS-485/RS-422 Transceiver With Robust EMC datasheet (Rev. H) PDF | HTML 04 Jun 2024
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. S) 29 Feb 2024
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. W) 31 Jan 2024
Certificate CQC Certificate for ISOxxDWx (Rev. J) 27 Mar 2023
Certificate CSA Certificate for ISO14xxDW 16 Feb 2023
Application note Isolated RS-485 Transceiver Reference Design (Rev. A) PDF | HTML 23 Sep 2022
Product overview Isolation for RS-485 PDF | HTML 21 Aug 2022
Certificate TUV Certificate for Isolation Devices (Rev. K) 05 Aug 2022
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. P) 05 Aug 2022
Application brief Robust Isolated RS-485 Enables New Industrial Applications (Rev. C) PDF | HTML 26 Jul 2022
Application brief How to Isolate RS-485 for Smallest Size and Highest Reliability (Rev. C) PDF | HTML 06 Jul 2022
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
Technical article 4 common questions when isolating signal and power PDF | HTML 01 Jun 2021
Application brief How to Isolate Signal and Power for an RS-485 System (Rev. C) PDF | HTML 25 May 2021
More literature Blog: Top 7 design questions about isolated RS-485 transceivers 06 Aug 2018

Design & development

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Evaluation board

ISO1412DWEVM — ISO1412DW high-performance, robust-EMC isolated full-duplex RS-485 evaluation module

The ISO1412DWEVM is an evaluation module (EVM) used to evaluate the high-performance, reinforced isolated RS-485 ISO1412 in a 16-pin package (package code DW). The EVM features enough test points and jumper options for you to evaluate the device with minimal external components.
User guide: PDF
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Simulation model

ISO1432 IBIS Model

SLLM430.ZIP (103 KB) - IBIS Model
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SOIC (DW) 16 Ultra Librarian
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