EMC protected, 50-Mbps, half-duplex, 5-kVrms isolated RS-485 & RS-422 transceiver


Product details


Duplex Half Data rate (Max) (Mbps) 50 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 open-in-new Find other Isolated RS-485 transceivers

Package | Pins | Size

SOIC (DW) 16 open-in-new Find other Isolated RS-485 transceivers


  • 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

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


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.

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

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) Jun. 03, 2020
More literature UL Certification (Rev. O) Feb. 03, 2021
More literature TUV certificate for isolation devices (Rev. I) Mar. 14, 2020
Application note How high speed isolated interface devices increase reliability of motor drive Feb. 17, 2020
More literature CSA Certification (Rev. P) Nov. 19, 2019
More literature VDE certificate for reinforced isolation for DIN VDE V 0884-11:2017-01 (Rev. N) Nov. 13, 2019
More literature VDE certificate for basic isolation for DIN VDE V 0884-11:2017-01 (Rev. Q) Sep. 20, 2019
More literature CQC Certification (Rev. F) Sep. 13, 2019
Application note Isolated RS-485 Transceiver Reference Design May 10, 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
User guide Isolated RS-485 Half-Duplex Evaluation Module Jul. 18, 2018

Design & development

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Hardware development

document-generic User guide
The ISO1410DWEVM is an evaluaiton module (EVM) used to evaluate the high-performance, reinforced isolated RS-485 ISO1410 in a 16-pin wide-body SOIC package (package code DW). The EVM features enough test points and jumper options for you to evaluate the device with minimal external components.
  • Robust EMC isolated RS-485
  • Wide supply and level translation range: 1.71 V to 5.5 V
  • Isolation barrier life > 25 years

Design tools & simulation

SLLM431.ZIP (123 KB) - IBIS Model

CAD/CAE symbols

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SOIC (DW) 16 View options

Ordering & quality

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