ZHCSNF0B
May 2018 – October 2021
ISOW1412
,
ISOW1432
PRODMIX
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Device Comparison Table
7
Pin Configuration and Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
Recommended Operating Conditions
8.3
Thermal Information
8.4
Power Ratings
8.5
Insulation Specifications
8.6
Safety-Related Certifications
8.7
Safety Limiting Values
8.8
Electrical Characteristics
8.9
Supply Current Characteristics at VISOOUT = 3.3 V
8.10
Supply Current Characteristics at VISOOUT = 5 V
8.11
Switching Characteristics at VISOOUT = 3.3 V
8.12
Switching Characteristics at VISOOUT = 5 V
8.13
Insulation Characteristics Curves
8.14
Typical Characteristics
9
Parameter Measurement Information
10
Detailed Description
10.1
Overview
10.2
Power Isolation
10.3
Signal Isolation
10.4
RS-485
10.5
Functional Block Diagram
10.6
Feature Description
10.6.1
Power-Up and Power-Down Behavior
10.6.2
Protection Features
10.6.3
Failsafe Receiver
10.6.4
Glitch-Free Power Up and Power Down
10.7
Device Functional Modes
10.8
Device I/O Schematics
11
Application and Implementation
11.1
Application Information
11.2
Typical Application
11.2.1
Design Requirements
11.2.2
Detailed Design Procedure
11.2.2.1
Data Rate, Bus Length and Bus Loading
11.2.2.2
Stub Length
11.2.2.3
Insulation Lifetime
12
Power Supply Recommendations
13
Layout
13.1
Layout Guidelines
13.2
Layout Example
14
Device and Documentation Support
14.1
Documentation Support
14.1.1
Related Documentation
14.2
Receiving Notification of Documentation Updates
14.3
支持资源
14.4
Trademarks
14.5
Electrostatic Discharge Caution
14.6
术语表
15
Mechanical, Packaging, and Orderable Information
1
特性
符合或超出 TIA/EIA-485A 标准要求
数据速率
ISOW1412:500kbps
ISOW1432:12Mbps
低排放、低噪声的集成式低排放直流/直流转换器
符合 CISPR 32 B 类和 EN 55032 B 类要求,并在两层 PCB 上留有裕度
25MHz 的低频电源转换器可实现低噪声性能
其他 2Mbps GPIO 通道
高效率输出功率
典型效率:46%
V
ISOOUT
精度:±5%
额外输出电流:20mA
用于 RS-485 和直流/直流的独立电源
逻辑电源 (V
IO
):1.71V 至 5.5V
电源转换器电源 (V
DD
):3V 至 5.5V
RS-485 与 PROFIBUS 兼容
开路、短路和空闲总线失效防护
1/8 单位负载:多达 256 个总线节点
上电和断电无干扰
增强型和基础型隔离选项
高 CMTI:100kV/µs(典型值)
高 ESD 总线保护
HBM:±16kV
IEC 61000-4-2 接触放电:±8kV
工作温度范围:-40°C 至 125°C
电流限制和热关断
20 引脚宽体 SOIC 封装
Section 8.6
:
符合 DIN VDE V 0884-11:2017-01 标准的 VDE 增强型和基础型绝缘
UL 1577 组件认证计划
IEC 62368-1、IEC 61010-1、IEC 60601-1 和 GB 4943.1-2011 认证