TCA9539_15 Datasheet, PDF (2/42 Pages) Texas Instruments – Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander

TCA9539
SCPS202B – OCTOBER 2009 – REVISED OCTOBER 2015
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 I²C Interface Timing Requirements........................... 7
6.7 RESET Timing Requirements................................... 7
6.8 Switching Characteristics .......................................... 7
6.9 Typical Characteristics .............................................. 8
7 Parameter Measurement Information ................ 11
8 Detailed Description ............................................ 15
8.1 Overview ................................................................. 15
8.2 Functional Block Diagram ....................................... 16
8.3 Feature Description................................................. 17
8.4 Device Functional Modes........................................ 18
8.5 Programming .......................................................... 18
8.6 Register Maps ........................................................ 20
9 Application and Implementation ........................ 25
9.1 Application Information............................................ 25
9.2 Typical Application ................................................. 25
10 Power Supply Recommendations ..................... 28
10.1 Power-On Reset Requirements ........................... 28
11 Layout................................................................... 30
11.1 Layout Guidelines ................................................. 30
11.2 Layout Example .................................................... 31
12 Device and Documentation Support ................. 32
12.1 Community Resources.......................................... 32
12.2 Trademarks ........................................................... 32
12.3 Electrostatic Discharge Caution ............................ 32
12.4 Glossary ................................................................ 32
13 Mechanical, Packaging, and Orderable
Information ........................................................... 32
4 Revision History
Changes from Revision A (September 2009) to Revision B
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section. ................................................................................................ 1
• Added RGE package.............................................................................................................................................................. 1
• Added Thermal Information table .......................................................................................................................................... 5
• Added "Time to reset; VCC = 1.65 - 2.3 V" parameter to RESET Timing Requirements table. ........................................... 7
• Added "Output data valid; VCC = 1.65 - 2.3 V" to Switching Characteristics table. ............................................................. 7
2
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