ADM2486 2.5 kV Signal Isolated, High Speed (20 Mbps), Half Duplex RS-485 Transceiver

The ADM2486 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and complies with ANSI EIA/TIA-485-A and ISO 8482: 1987(E).

The device employs Analog Devices iCoupler® technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. The logic side of the device is powered with either a 5 V or a 3 V supply, and the bus side uses an isolated 5 V supply.

The ADM2486 driver has an active-high enable feature. The driver differential outputs and the receiver differential inputs are connected internally to form a differential input/output port that imposes minimal loading on the bus when the driver is disabled or when VDD1 or VDD2 = 0 V. Also provided is an active-high receiver disable feature that causes the receive output to enter a high impedance state.

The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention may cause excessive power dissipation. The part is fully specified over the industrial temperature range and is available in a 16-lead, wide body SOIC package.

Applications

Features and Benefits
  • Half-duplex, isolated RS-485 transceiver
  • PROFIBUS® compliant
  • ANSI EIA/TIA 485-A and ISO 8482: 1987(E) compliant
  • 20 Mbps data rate
  • 5 V or 3 V operation (VDD1)
  • High common-mode transient immunity: >25 kV/μs
  • Isolated DE status output
  • Receiver open-circuit, fail-safe design
  • Thermal shutdown protection
  • 50 nodes on bus
  • Safety and regulatory approvals
    • UL recognition—2500 Vrms for 1 minute per UL 1577
    • CSA Component Acceptance Notice #5A IEC 609501 800 Vrms (basic), 400 Vrms (reinforced)
    • VDE Certificate of Conformity DIN V VDE 0884-10 (VDE V 0884-10): 2006-12
  • UL recognition—2500 Vrms for 1 minute per UL 1577
  • CSA Component Acceptance Notice #5A
    • IEC 609501 800 Vrms (basic), 400 Vrms (reinforced)
  • IEC 609501 800 Vrms (basic), 400 Vrms (reinforced)
  • VDE Certificate of Conformity
    • DIN V VDE 0884-10 (VDE V 0884-10): 2006-12
  • DIN V VDE 0884-10 (VDE V 0884-10): 2006-12
  • VIORM = 560 V peak
  • Operating temperature range: −40°C to +85°C
  • Wide body, 16-lead SOIC package
    • Interface & Isolation
    Data Sheets
    Documentnote
    ADM2486: High Speed, Half-Duplex iCoupler® Isolated RS-485 Transceiver Data Sheet (Rev. E)PDF 554 kB
    Application Notes
    Documentnote
    AN-1179: Junction Temperature Calculation for Analog Devices RS-485/RS-422, CAN, and LVDS/M-LVDS Transceivers (Rev. A)PDF 156.87 K
    AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices (Rev. C)PDF 406 kB
    AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format (Rev. 0)PDF 671 kB
    AN-960: RS-485/RS-422 Circuit Implementation Guide (Rev. 0)PDF 245 kB
    AN-727: iCoupler® Isolation in RS-485 Applications (Rev. 0)PDF 282 kB
    AN-740: iCoupler® Isolation in RS-232 Applications (Rev. 0)PDF 716 kB
    AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (Rev. A)PDF 246 kB
    AN-825: Power Supply Considerations in iCoupler® Isolation Products (Rev. 0)PDF 181 kB
    User Guides
    Documentnote
    UG-240: Evaluation Board for the ADM2486 High Speed, Half-Duplex iCoupler Isolated RS-485 TransceiverPDF 179 kB
    Frequently Asked Questions
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADM2486BRW Production16 ld SOIC - WideOTH 47-40 to 85C6.435.83N
    ADM2486BRW-REEL Obsolete16 ld SOIC - WideREEL 1000-40 to 85C00N
    ADM2486BRWZ Production16 ld SOIC - WideOTH 47-40 to 85C4.033.5Y
    ADM2486BRWZ-REEL Production16 ld SOIC - WideREEL 1000-40 to 85C03.5Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    AD-FMCMOTCON2-EBZEvaluation Board999Y
    EVAL-ADM2486EBZEvaluation Board75Y
    Reference Materials
    ADM2486: High Speed, Half-Duplex iCoupler® Isolated RS-485 Transceiver Data Sheet (Rev. E) adm2486
    AN-1179: Junction Temperature Calculation for Analog Devices RS-485/RS-422, CAN, and LVDS/M-LVDS Transceivers (Rev. A) adn4670
    AN-0971: isoPower器件的辐射控制建议 (Rev. C) adum1233
    AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices (Rev. C) ad7400
    AN-1176：二进制.Bxl文件格式的元件尺寸和符号 (Rev. 0) adn4670
    AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format (Rev. 0) adn4670
    AN-793: iCoupler®隔离产品的ESD/闩锁考虑因素 (Rev. A) adum1233
    AN-740: RS-232应用中的Coupler® 隔离 (Rev. 0) adum1233
    AN-960: RS-485/RS-422电路实施指南 (Rev. 0) adm2486
    AN-727: RS-485应用中的iCoupler®隔离 (Rev. 0) adum1233
    AN-960: RS-485/RS-422 Circuit Implementation Guide (Rev. 0) adm2486
    AN-727: iCoupler® Isolation in RS-485 Applications (Rev. 0) ad7400
    AN-740: iCoupler® Isolation in RS-232 Applications (Rev. 0) ad7400
    AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (Rev. A) ad7400
    AN-825: iCoupler®隔离产品的电源考虑因素 (Rev. 0) adum1233
    AN-825: Power Supply Considerations in iCoupler® Isolation Products (Rev. 0) ad7400
    UG-240: Evaluation Board for the ADM2486 High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver adm2486
    数字隔离器产品选型与资源指南 adum1233
    Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4 ad7656
    Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3 ad7780
    RS-232 Transceivers Cross Reference Guide adm2486
    ADI RS-485/RS-422 Cross Reference Guide adm2486
    MS-2155: Options and Solutions for Partitioning Isolated Power in Isolated... adm2486
    MS-2127: 在太阳能逆变器中利用 i Coupler 数字隔离器进行设计 adum3220
    Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with ad7400
    NAppkin Note: Lowering the Power of the ADuM524x ad7400
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