ZHCSD31G November   2014  – July 2022 ISO7821

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Power Dissipation Characteristics
    6. 6.6  Electrical Characteristics, 5 V
    7. 6.7  Electrical Characteristics, 3.3 V
    8. 6.8  Electrical Characteristics, 2.5 V
    9. 6.9  Switching Characteristics, 5 V
    10. 6.10 Switching Characteristics, 3.3 V
    11. 6.11 Switching Characteristics, 2.5 V
    12. 6.12 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 High Voltage Feature Description
        1. 8.3.1.1 Regulatory Information
        2. 8.3.1.2 Safety Limiting Values
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device I/O Schematics
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Electromagnetic Compatibility (EMC) Considerations
      3. 9.2.3 Application Performance Curve
        1.       Power Supply Recommendations
  10. 10Layout
    1. 10.1 PCB Material
    2. 10.2 Layout Guidelines
    3. 10.3 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Trademarks
  12. 12Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • DWW|16
  • DW|16
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.4 Device Functional Modes

ISO7821 functional modes are shown in Table 8-6.

Table 8-6 ISO7821 Function Table
VCCIVCCOINPUT
(INx)(2)		OUTPUT ENABLE
(ENx)
(DWW Package Only)		OUTPUT
(OUTx)		COMMENTS
PUPUHH or openHNormal Operation:
A channel output assumes the logic state of its input.
LH or openL
OpenH or openDefaultDefault mode: When INx is open, the corresponding channel output goes to its default high logic state. Default= High for ISO7821 and Low for ISO7821F.
XPUXLZA low value of Output Enable causes the outputs to be high- impedance.
PDPUXH or openDefaultDefault mode: When VCCI is unpowered, a channel output assumes the logic state based on the selected default option.Default= High for ISO7821 and Low for ISO7821F.
When VCCI transitions from unpowered to powered-up, a channel output assumes the logic state of its input.
When VCCI transitions from powered-up to unpowered, channel output assumes the selected default state.
XPDXXUndeterminedWhen VCCO is unpowered, a channel output is undetermined (1).
When VCCO transitions from unpowered to powered-up, a channel output assumes the logic state of its input
(1) The outputs are in undetermined state when 1.7 V < VCCI, VCCO < 2.25 V.
(2) A strongly driven input signal can weakly power the floating VCC via an internal protection diode and cause undetermined output.