SCPS204D January   2014  – November 2019 TCA9545A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Application Diagram
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Interface Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Interrupt and Reset Timing Requirements
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 RESET Input
      2. 8.4.2 Power-On Reset
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
    6. 8.6 Control Register
      1. 8.6.1 Device Address
      2. 8.6.2 Control Register Description
      3. 8.6.3 Control Register Definition
      4. 8.6.4 Interrupt Handling
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 TCA9545A Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power-On Reset Requirements
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

PW package
20-Pin TSSOP
Top View

Pin Functions

PIN DESCRIPTION
NO. NAME
1 A0 Address input 0. Connect directly to VCC or ground.
2 A1 Address input 1. Connect directly to VCC or ground.
3 RESET Active-low reset input. Connect to VCC or VDPUM(1) through a pull-up resistor if not used.
4 INT0 Active-low interrupt input 0. Connect to VDPU0(1) through a pull-up resistor.
5 SD0 Serial data 0. Connect to VDPU0(1) through a pul-up resistor.
6 SC0 Serial clock 0. Connect to VDPU0(1)through a pull-up resistor.
7 INT1 Active-low interrupt input 1. Connect to VDPU1(1) through a pull-up resistor.
8 SD1 Serial data 1. Connect to VDPU1(1) through a pull-up resistor.
9 SC1 Serial clock 1. Connect to VDPU1(1) through a pull-up resistor.
10 GND Ground
11 INT2 Active-low interrupt input 2. Connect to VDPU2(1) through a pull-up resistor.
12 SD2 Serial data 2. Connect to VDPU2(1) through a pull-up resistor.
13 SC2 Serial clock 2. Connect to VDPU2(1) through a pull-up resistor.
14 INT3 Active-low interrupt input 3. Connect to VDPU3(1) through a pull-up resistor.
15 SD3 Serial data 3. Connect to VDPU3(1) through a pull-up resistor.
16 SC3 Serial clock 3. Connect to VDPU3(1) through a pull-up resistor.
17 INT Active-low interrupt output. Connect to VDPUM(1) through a pull-up resistor.
18 SCL Serial clock line. Connect to VDPUM(1) through a pull-up resistor.
19 SDA Serial data line. Connect to VDPUM(1) through a pull-up resistor.
20 VCC Supply power
(1) VDPUX is the pull-up reference voltage for the associated data line. VDPUM is the master I2C master reference voltage and VDPU0–VDPU3 are the slave channel reference voltages.