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TCA9539-Q1 Automotive Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset Pin, and Configuration Registers
SCPS254D
January 2014 – October 2021
TCA9539-Q1
PRODUCTION DATA
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TCA9539-Q1 Automotive Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset Pin, and 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
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
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
I/O Port
8.3.2
RESET Input
8.3.3
Interrupt ( INT) Output
8.4
Device Functional Modes
8.4.1
Power-On Reset
8.5
Programming
8.5.1
I2C Interface
8.6
Register Maps
8.6.1
Device Address
8.6.2
Control Register And Command Byte
8.6.3
Register Descriptions
8.6.3.1
Bus Transactions
8.6.3.1.1
Writes
8.6.3.1.2
Reads
9
Power Supply Recommendations
9.1
Power-On Reset Requirements
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
Support Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
PW|24
MPDS363A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
scps254d_oa
scps254d_pm
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DATA SHEET
TCA9539-Q1 Automotive Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset Pin, and Configuration Registers
1
Features
AEC-Q100 (Grade 1): Qualified for automotive applications
Functional Safety-Capable
Documentation available to aid in functional safety system design
I
2
C to parallel port expander
Open-drain active-low interrupt output
Active-low reset input
5 V tolerant input and output ports
Compatible with most microcontrollers
400 kHz Fast I
2
C bus
Polarity inversion register
Internal power-on reset
No glitch on power up
Address by two hardware address pins for use of up to four devices
Latched outputs for directly driving LEDs
Latch-up performance exceeds 100 mA Per JESD 78, class II
ESD protection exceeds JESD 22
2000-V Human-body model (A114-A)
1000-V Charged-device model (C101)
