ZHCSJ22B October   2017  – July 2019 ISO7041

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化应用电路原理图
      2.      电压为 3.3V 时的数据速率与功耗间的关系
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Power Ratings
    6. 7.6  Insulation Specifications
    7. 7.7  Safety-Related Certifications
    8. 7.8  Safety Limiting Values
    9. 7.9  Electrical Characteristics 5V Supply
    10. 7.10 Supply Current Characteristics 5V Supply
    11. 7.11 Electrical Characteristics 3.3V Supply
    12. 7.12 Supply Current Characteristics 3.3V Supply
    13. 7.13 Electrical Characteristics 2.5V Supply
    14. 7.14 Supply Current Characteristics 2.5V Supply
    15. 7.15 Switching Characteristics
    16. 7.16 Insulation Characteristics Curves
    17. 7.17 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Refresh Enable
      2. 9.3.2 Electromagnetic Compatibility (EMC) Considerations
    4. 9.4 Device Functional Modes
      1. 9.4.1 Device I/O Schematics
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Insulation Lifetime
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 PCB Material
    2. 12.2 Layout Example
  13. 13器件和文档支持
    1. 13.1 文档支持
      1. 13.1.1 相关文档
    2. 13.2 接收文档更新通知
    3. 13.3 社区资源
    4. 13.4 商标
    5. 13.5 静电放电警告
    6. 13.6 Glossary
  14. 14机械、封装和可订购信息

9.4 Device Functional Modes

Table 2 shows the functional modes for the device.

Table 2. Function Table(1)

VCCI VCCO INPUT
(INx)(3) 		REFRESH ENABLE
(ENx)		 OUTPUT
(OUTx)		 COMMENTS
PU PU H L H Normal Operation:
A channel output assumes the logic state of its input.
L L L
X H Undetermined The device needs an input signal transition to validate the output tracks the input state. Without a signal edge transition, the output will be in an undetermined state.
PD PU X L Default When VCCI is unpowered, a channel output assumes the logic state based on the selected default option. Default is High for the device without the F suffix and Low for device with the F suffix.
When VCCI transitions from unpowered to powered-up, a channel output assumes the logic state of the input.
When VCCI transitions from powered-up to unpowered, channel output assumes the selected default state.
H Undetermined When VCCI is unpowered, a channel output assumes the logic state based on the previous state of the output before VCCI powered down.
X PD X L Undetermined When VCCO is unpowered, a channel output is undetermined(2).
When VCCO transitions from unpowered to powered-up, a channel output assumes the logic state of the input.
H Undetermined When VCCO is unpowered, a channel output is undetermined(2).
When VCCO transitions from unpowered to powered-up, a channel output assumes the selected default option.
X X X Open Undetermined When ENx is unconnected or open, the device output will be in an undetermined and unknown state. ENx must be connected high or low for the device to behave correctly.
(1) VCCI = Input-side VCC; VCCO = Output-side VCC; PU = Powered up (VCC ≥ 2.25 V); PD = Powered down (VCC ≤ 1.54); X = Irrelevant; H = High level; L = Low level ; Z = High Impedance
(2) The outputs are in undetermined state when 2.25 V < VCCI, VCCO < 2.25 V.
(3) A strongly driven input signal can weakly power the floating VCC through an internal protection diode and cause undetermined output.
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