SCPS292
July 2025
TCA9539A-Q1
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
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
RESET Timing Requirements
5.8
Switching Characteristics
5.9
Typical Characteristics
6
Parameter Measurement Information
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
I/O Port
7.3.2
RESET Input
7.3.3
Interrupt ( INT) Output
7.4
Device Functional Modes
7.4.1
Power-On Reset
7.5
Programming
7.5.1
I2C Interface
7.6
Register Map
7.6.1
Device Address
7.6.2
Control Register And Command Byte
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Calculating Junction Temperature and Power Dissipation
8.2.2.2
Minimizing ICC When I/Os Control LEDs
8.2.3
Application Curves
8.3
Power Supply Recommendations
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
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
9.1.1
Related Documentation
For related documentation see the following:
Texas Instruments,
Understanding the I2C Bus
Texas Instruments,
I2C Pull-up Resistor Calculation
Texas Instruments,
Introduction to Logic
Texas Instruments,
Maximum Clock Frequency of I2C Bus Using Repeaters
Texas Instruments,
I2C Bus Pull-Up Resistor Calculation