ZHCSNL9A May   2021  – December 2021 ISOW1044

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 说明（续）
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  ThermalInformation
    5. 8.5  Power Ratings
    6. 8.6  Insulation Specifications
    7. 8.7  Safety-Related Certifications
    8. 8.8  Safety Limiting Values
    9. 8.9  Electrical Characteristics
    10. 8.10 Supply Current Characteristics
    11. 8.11 Switching Characteristics
    12. 8.12 Insulation Characteristics Curves
    13. 8.13 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Power Isolation
    3. 10.3 Signal Isolation
    4. 10.4 CAN Transceiver
      1. 10.4.1 Remote Wake Request via Wake-Up Pattern (WUP) in Standby Mode
    5. 10.5 Functional Block Diagram
    6. 10.6 Feature Description
      1. 10.6.1 CAN Bus States
      2. 10.6.2 Digital Inputs and Outputs: TXD (Input) and RXD (Output)
      3. 10.6.3 TXD Dominant Timeout (DTO)
      4. 10.6.4 Power-Up and Power-Down Behavior
      5. 10.6.5 Protection Features
      6. 10.6.6 Floating Pins, Unpowered Device
      7. 10.6.7 Glitch-Free Power Up and Power Down
    7. 10.7 Device Functional Modes
    8. 10.8 Device I/O Schematics
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Bus Loading, Length and Number of Nodes
        2. 11.2.2.2 CAN Termination
      3. 11.2.3 Application Curve
      4. 11.2.4 Insulation Lifetime
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Documentation Support
      1. 14.1.1 Related Documentation
    2. 14.2 Receiving Notification of Documentation Updates
    3. 14.3 支持资源
    4. 14.4 Trademarks
    5. 14.5 静电放电警告
    6. 14.6 术语表
  15. 15Mechanical, Packaging, and Orderable Information

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10.7 Device Functional Modes

#GUID-BFA2E4DB-6CB2-407B-8F80-46CBCE9DC3EE/T5414722-16 lists the supply configuration for these devices:

Table 10-1 Supply configuration Function Table
INPUTS OUTPUTS
VDD VIO EN/FLT BUS OUTPUT (CANH/CANL) RXD VISOOUT(2)
< VDD(UVLO+) >VIO(UVLO+) X High-Z Recessive (Default High) OFF
>VDD(UVLO+) <VIO(UVLO+) X High-Z Recessive (Default High) Invalid Operation
5 V 1.71 V to 5.5 V H or Open Per Device Mode (1) and TXD Mirrors Bus 5 V
5 V 1.71 V to 5.5 V L High-Z Recessive (Default High) OFF
(1) At Normal mode (STB = L), BUS OUTPUT follows TXD. Otherwise if at Standby mode (STB = H or Open), BUS OUTPUT is High-Z.
(2) VISOOUT shorted to VISOIN on PCB. GND2 and GISOIN pins are shorted together and EN/FLT = High.

#GUID-BFA2E4DB-6CB2-407B-8F80-46CBCE9DC3EE/T5414722-20 shows the different driver functional modes:

Table 10-2 Driver Functional Table
INPUTS OUTPUTS
VDD(1) VIO EN/FLT STB INPUT TXD CANH (3) CANL (3) DRIVEN BUS STATE
PU PU H or Open L L H L Dominant
H or Open Z Z Recessive
H or Open X Hi-Z Hi-Z Weak pull-down to ground
L X X Hi-Z Hi-Z Weak pull-down to ground
PD PU X X X Hi-Z Hi-Z Weak pull-down to ground
PU PD(2) X X X Invalid Operation
(1) PU=Powered up, PD=Powered down; H=high level; L=Low level; X=Irrelevant; Z = common-mode (recessive) biased to VISOIN/2 , Hi-Z=High impedance state
(2) A strongly driven input signal on TXD can weakly power the floating VIO through an internal protection diode and cause an undetermined output.
(3) VISOOUT shorted to VISOIN on PCB and GND2 and GISOIN pins are shorted together and EN/FLT = High

At Normal mode (STB = L), the CAN outputs follow the logic states at data input, TXD. A logic low at the TXD input causes the CAN output to go dominant. Therefore the differential output voltage defined by Equation 2 is positive. A logic high at the TXD input causes the CAN BUS to go recessive. Therefore the differential output voltage defined by Equation 2 is negative.

Equation 2. VOD = VCANH – VCANL

At Standby mode (STB = H or Open), both outputs go to the high-impedance (Hi-Z) state. The logic state at the TXD pin is irrelevant when this mode. The driver is disabled (bus outputs are in the Hi-Z) by default when the STB pin is left open. The TXD pin has an internal pullup resistor.

#GUID-BFA2E4DB-6CB2-407B-8F80-46CBCE9DC3EE/T5414722-25 shows the different receiver functional modes:

Table 10-3 Receiver Functional Table
INPUTS OUTPUT
VDD(1) VIO EN/FLT STB CAN DIFFERENTIAL INPUTS VID = VCANH- VCANL BUS STATE RXD (3)
PU PU H or Open var tempcontentStr='/Analog & Mixed-Signal/isolation/power for signal isolators/signal isolators with integrated power'; var partNum ='ISOW1044'; var contentStr = replaceSplChars( tempcontentStr )+ "/"+ partNum; var tiContentGroup = contentStr.replace("'",""); function replaceSplChars(content){ var myRegExp=new RegExp("™|®|™","gi"); content=content.replace(myRegExp,""); return content; } var tiProductPathID='/897/193043/193044/'; var tiPageName = 'Literature reader-ZHCSNL9A-zh_CN'; var tiDocType = 'Data Sheet'; var tiLibraryStore = new com.TI.tiLibrary.tiLibraryStore(); var tiLibraryViewerStore = tiLibraryStore.viewer_store; RiotControl.addStore(tiLibraryStore); var subRoutes = riot.route.create(); subRoutes("/document-viewer/*/datasheet/*\\?*#*", function(gpn, url, params, anchor) { RiotControl.trigger("ti_library_open_viewer", { document: tiLibraryViewerStore.document, documentLocale: tiLibraryViewerStore.documentLocale, url: "/document-viewer/" + gpn + "/datasheet/" + url + "#" + anchor, toc: true, set_content: true }); 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var ods_reader = riot.mount('ti-library-viewer', { store: tiLibraryStore.list_store, viewerstore: tiLibraryViewerStore }); riot.route.base('/'); riot.route.start(true); compute_document_locale = function(docName) { var locale = 'en_US'; if (docName) { if (docName.toLowerCase().indexOf('z')===0) { locale = 'zh_CN'; } else if (docName.toLowerCase().indexOf('j') == 0) { locale = 'ja_JP'; } } return locale; } open_reader = function() { var path = window.location.pathname.split('/'); var path_minus_filename = ''; for (var i = 0; i < path.length - 1; i++) { if (i == 0 && path[i] == '') { console.log("double slashes found in beginning of document path; treating document path as local machine path"); continue; } path_minus_filename += "/" + path[i]; } RiotControl.trigger("ti_library_open_viewer", { documentLocale: compute_document_locale( "ZHCSNL9A"), document: { href: path_minus_filename, lit_num: "ZHCSNL9A", doc_type: "Data Sheet", show_toc: "true", translated_doc_type: "数据表", gpn: "ISOW1044", title: "ISOW1044 具有集成式低发射、低噪声、高效直流/直流转换器的隔离式 CAN FD 收发器", disclaimer: "本资源的原文使用英文撰写。 为方便起见，TI 提供了译文；由于翻译过程中可能使用了自动化工具，TI 不保证译文的准确性。 为确认准确性，请务必访问 ti.com 参考最新的英文版本（控制文档）。 ", product: "//www.ti.com.cn/product/cn/ISOW1044", email: 'mailto:?subject=ISOW1044 Datasheet&body=http://www.ti.com.cn/document-viewer/cn/ISOW1044/datasheet', download: '//www.ti.com.cn/cn/lit/gpn/ISOW1044', tistore: '//store.ti.com/Search.aspx?k=ISOW1044&pt=-1', productstatusdescription: 'PRODUCTION DATA' }, url: "/document-viewer/cn/ISOW1044/datasheet/GUID-BFA2E4DB-6CB2-407B-8F80-46CBCE9DC3EE", prepopulated: true, modalOptions: { dismissible: false } }); 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