TCA9545A Datasheet, PDF (2/30 Pages) Texas Instruments – Low Voltage 4-channel I2C and SMbus Switch With Interrupt Logic and Reset Functions

TCA9545A
SCPS204B – JANUARY 2014 – REVISED MARCH 2014
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Application Diagram............................ 1
5 Revision History..................................................... 2
6 Terminal Configuration and Functions................ 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ..................................... 4
7.2 Handling Ratings....................................................... 4
7.3 Recommended Operating Conditions ...................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 I²C Interface Timing Requirements........................... 6
7.7 Switching Characteristics .......................................... 7
7.8 Interrupt and Reset Timing Requirements ................ 7
7.9 Typical Characteristics .............................................. 8
8 Parameter Measurement Information .................. 9
9 Detailed Description ............................................ 11
9.1 Overview ................................................................. 11
9.2 Functional Block Diagram ....................................... 11
9.3 Feature Description................................................. 12
9.4 Device Functional Modes........................................ 12
9.5 Programming........................................................... 12
9.6 Control Register ...................................................... 15
10 Application and Implementation........................ 17
10.1 Application Information.......................................... 17
10.2 Typical Application ................................................ 17
11 Power Supply Recommendations ..................... 20
11.1 Power-On Reset Requirements ........................... 20
12 Layout................................................................... 22
12.1 Layout Guidelines ................................................. 22
12.2 Layout Example .................................................... 22
13 Device and Documentation Support ................. 23
13.1 Trademarks ........................................................... 23
13.2 Electrostatic Discharge Caution ............................ 23
13.3 Glossary ................................................................ 23
14 Mechanical, Packaging, and Orderable
Information ........................................................... 23
5 Revision History
Changes from Revision A (March 2014) to Revision B
Page
• Updated pin names in graphics. ............................................................................................................................................ 1
Changes from Original (January 2014) to Revision A
Page
• Updated PREVIEW document to full version. ....................................................................................................................... 1
2
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