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TCA6424A Low-Voltage 24-Bit I2C and SMBus I/O Expander With Interrupt Output, Reset, and Configuration Registers
SCPS193D
July 2010 – January 2023
TCA6424A
PRODUCTION DATA
CONTENTS
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TCA6424A Low-Voltage 24-Bit I2C and SMBus I/O Expander With Interrupt Output, Reset, and Configuration Registers
1
Features
2
Description
3
Revision History
4
Description (continued)
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings (1)
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
I2C Interface Timing Requirements
6.7
Reset Timing Requirements
6.8
Switching Characteristics
6.9
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.1.1
Voltage Translation
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
I/O Port
8.3.2
I2C Interface
8.4
Device Functional Modes
8.4.1
Device Address
8.5
Programming
8.5.1
Power-On Reset
8.5.2
Reset Input ( RESET)
8.5.3
Interrupt Output ( INT)
8.5.4
Bus Transactions
8.5.4.1
Writes
8.5.4.2
Reads
8.6
Register Maps
8.6.1
Control Register and Command Byte
8.6.2
Register Descriptions
9
Application and Implementation
9.1
Typical Application
9.1.1
Detailed Design Procedure
9.1.1.1
Minimizing ICC When I/Os Control LEDs
9.2
Power Supply Recommendation
10
Device and Documentation Support
10.1
Receiving Notification of Documentation Updates
10.2
Support Resources
10.3
Trademarks
10.4
Electrostatic Discharge Caution
10.5
Glossary
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RGJ|32
MPQF183D
Thermal pad, mechanical data (Package|Pins)
Orderable Information
scps193d_oa
scps193d_pm
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