Product details

Duplex Full Data rate (Max) (Mbps) 0.5 Isolation rating (Vrms) 5000 Integrated isolated power No Operating temperature range (C) -40 to 125 Fail safe Idle, Open, Short HBM ESD (kV) 30 Surge voltage capability (Vpk) 10000, 6000
Duplex Full Data rate (Max) (Mbps) 0.5 Isolation rating (Vrms) 5000 Integrated isolated power No Operating temperature range (C) -40 to 125 Fail safe Idle, Open, Short HBM ESD (kV) 30 Surge voltage capability (Vpk) 10000, 6000
SOIC (DW) 16 77 mm² 10.3 x 7.5
  • Compatible with TIA/EIA-485-A
  • PROFIBUS compatible at 5-V bus-side supply
  • Bus I/O protection
    • ± 30 kV HBM
    • ±16 kV IEC 61000-4-2 Contact discharge
    • ± 4 kV IEC 61000-4-4 Electrical fast transient
  • Low-EMI 500-kbps, 12 Mbps and 50 Mbps Data Rates
  • 1.71-V to 5.5-V logic-side supply (VCC1), 3-V to 5.5-V bus-side supply (VCC2)
  • Failsafe receiver for bus open, short, and idle
  • 1/8 Unit load up to 256 nodes on bus
  • 100-kV/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:
    • 7071-VPK VIOTM and 1500-VPK VIORM (reinforced and basic options) per DIN VDE V 0884-11:2017-01
    • 5000-VRMS 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 5-V bus-side supply
  • Bus I/O protection
    • ± 30 kV HBM
    • ±16 kV IEC 61000-4-2 Contact discharge
    • ± 4 kV IEC 61000-4-4 Electrical fast transient
  • Low-EMI 500-kbps, 12 Mbps and 50 Mbps Data Rates
  • 1.71-V to 5.5-V logic-side supply (VCC1), 3-V to 5.5-V bus-side supply (VCC2)
  • Failsafe receiver for bus open, short, and idle
  • 1/8 Unit load up to 256 nodes on bus
  • 100-kV/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:
    • 7071-VPK VIOTM and 1500-VPK VIORM (reinforced and basic options) per DIN VDE V 0884-11:2017-01
    • 5000-VRMS 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).

These devices are used for long distance communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. The symmetrical isolation barrier of each device is tested to provide 5000 VRMS of isolation for 1 minute per UL 1577 between the bus-line transceiver and the logic-level interface.

The ISO14xx devices can operate from 1.71 V to 5.5 V on side 1 which lets the devices be interfaced with low voltage FPGAs and ASICs. The wide supply voltage on side 2 from 3 V to 5.5 V eliminates the need for a regulated supply voltage on the isolated side. These devices support a wide operating ambient temperature range from –40°C to +125°C.

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).

These devices are used for long distance communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. The symmetrical isolation barrier of each device is tested to provide 5000 VRMS of isolation for 1 minute per UL 1577 between the bus-line transceiver and the logic-level interface.

The ISO14xx devices can operate from 1.71 V to 5.5 V on side 1 which lets the devices be interfaced with low voltage FPGAs and ASICs. The wide supply voltage on side 2 from 3 V to 5.5 V eliminates the need for a regulated supply voltage on the isolated side. These devices support a wide operating ambient temperature range from –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet ISO14xx 5-kVRMS Isolated RS-485/RS-422 Transceiver with Robust EMC datasheet (Rev. G) PDF | HTML 03 Jun 2020
Application note Isolated RS-485 Transceiver Reference Design (Rev. A) PDF | HTML 23 Sep 2022
Certificate CQC Certificate for ISOxxDWx (Rev. H) 30 Aug 2022
More literature 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 note Robust Isolated RS-485 Enables New Industrial Applications (Rev. C) PDF | HTML 26 Jul 2022
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. R) 12 Jul 2022
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. T) 12 Jul 2022
Application note 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
Certificate CSA Certification (Rev. Q) 14 Jun 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
Application note How to Isolate Signal and Power for an RS-485 System (Rev. C) PDF | HTML 25 May 2021
EVM User's guide ISO1412DWEVM User's Guide 17 Aug 2018
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
Not available on TI.com
Simulation model

ISO1412 IBIS Model

SLLM425.ZIP (103 KB) - IBIS Model
Package Pins Download
SOIC (DW) 16 View options

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