ZHCSOM7H
July 2001 – September 2024
PCF8574A
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
I2C Interface Timing Requirements
5.7
Switching Characteristics
5.8
Typical Characteristics
6
Parameter Measurement Information
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.2.1
Simplified Block Diagram of Device
7.2.2
Simplified Schematic Diagram of Each P-Port Input/Output
7.3
Feature Description
7.3.1
I2C Interface
7.3.2
Interface Definition
7.3.3
Address Reference
7.4
Device Functional Modes
8
Application Information Disclaimer
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.1.1
Minimizing ICC When I/Os Control LEDs
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
8.3
Power Supply Recommendations
8.3.1
Power-On Reset Requirements
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Glossary
9.2
Receiving Notification of Documentation Updates
9.3
支持资源
9.4
Trademarks
9.5
静电放电警告
9.6
术语表
10
Revision History
11
Mechanical, Packaging, and Orderable Information
1
特性
低待机流耗,最大值为 10μA
I
2
C 至并行端口扩展器
开漏中断输出
兼容大多数微控制器
具有高电流驱动能力的锁存输出,用于直接驱动 LED
闩锁性能超过 100mA,符合 JESD 78 II 类规范的要求