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TCA9537 Remote 4-Bit I2C and SMBus I/O Expander with Configuration Registers
SCPS279
February 2022
TCA9537
PRODUCTION DATA
CONTENTS
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TCA9537 Remote 4-Bit I2C and SMBus I/O Expander with Configuration Registers
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
I2C Bus Timing Requirements
6.8
Switching Characteristics
6.9
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
I/O Port
8.3.2
Interrupt (INT) Output
8.3.3
RESET Input
8.4
Device Functional Modes
8.4.1
Power-On Reset
8.4.2
Powered-Up
8.5
Programming
8.5.1
I2C Interface
8.5.1.1
Writes
8.5.1.2
Reads
8.5.2
Software Reset Call
8.6
Register Maps
8.6.1
Device Address
8.6.2
Control Register and Command Byte
8.6.3
Register Descriptions
9
Application Information Disclaimer
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.1.1
Minimizing ICC When I/Os Control LEDs
9.2.2
Detailed Design Procedure
9.2.3
Application Curves
10
Power Supply Recommendations
10.1
Power-On Reset
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Receiving Notification of Documentation Updates
12.3
Support Resources
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
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