TCA9554_15 Datasheet, PDF (2/38 Pages) Texas Instruments – TCA9554 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers

TCA9554
SCPS233D – MARCH 2012 – REVISED AUGUST 2015
www.ti.com
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....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 I²C Interface Timing Requirements........................... 7
6.7 Switching Characteristics .......................................... 7
6.8 Typical Characteristics .............................................. 8
7 Parameter Measurement Information ................ 10
8 Detailed Description ............................................ 13
8.1 Overview ................................................................. 13
8.2 Functional Block Diagram ....................................... 14
8.3 Feature Description................................................. 15
8.4 Device Functional Modes........................................ 16
8.5 Programming........................................................... 16
8.6 Register Map........................................................... 18
9 Application and Implementation ........................ 22
9.1 Application Information............................................ 22
9.2 Typical Application ................................................. 22
10 Power Supply Recommendations ..................... 25
10.1 Power-On Reset Requirements ........................... 25
11 Layout................................................................... 27
11.1 Layout Guidelines ................................................. 27
11.2 Layout Example .................................................... 27
12 Device and Documentation Support ................. 28
12.1 Community Resources.......................................... 28
12.2 Trademarks ........................................................... 28
12.3 Electrostatic Discharge Caution ............................ 28
12.4 Glossary ................................................................ 28
13 Mechanical, Packaging, and Orderable
Information ........................................................... 28
4 Revision History
Changes from Revision C (May 2015) to Revision D
Page
• Added DB package................................................................................................................................................................. 1
Changes from Revision B (October 2014) to Revision C
Page
• Added standby mode current for V_I = V_CC test condition........................................................................................................ 6
• Changed ΔI_CC for one P-port input at V_I = V_CC - 0.6, and other P-port I/O at V_I = V_CC or GND. ............................................ 6
• Added clarification in datasheet that raising voltage above V_CC on P-port I/O will result in current flow from P-port to
V_CC. ...................................................................................................................................................................................... 15
Changes from Revision A (March 2012) to Revision B
Page
• Added Handling Rating 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
• Updated I_OL PARAMETER in the Electrical Characteristics table. ......................................................................................... 5
Changes from Original (September 2014) to Revision A
Page
• Initial release of full version. .................................................................................................................................................. 1
2
Submit Documentation Feedback
Product Folder Links: TCA9554
Copyright © 2012–2015, Texas Instruments Incorporated