SLVSLJ4A April   2026  – July 2026 TCA9847

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics (Global)
    6. 5.6 I2C Interface Timing Requirements
    7. 5.7 Reset Timing Requirements
    8. 5.8 Switching Characteristics
    9. 5.9 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 RESET Input
      2. 7.4.2 Power-On Reset
    5. 7.5 Programming
      1. 7.5.1 I2C Interface
      2. 7.5.2 Device Address
      3. 7.5.3 Bus Transactions
        1. 7.5.3.1 Writes
        2. 7.5.3.2 Reads
      4. 7.5.4 Control Register
      5. 7.5.5 RESET Input
      6. 7.5.6 Power-On Reset
      7. 7.5.7 Software Reset
      8. 7.5.8 Device ID
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Voltage Translation Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power-On Reset Requirements
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.5.2 Device Address

The last bit of the target address defines the operation (read or write) to be performed. When high (1), a read is selected, while a low (0) selects a write operation.

For a read and write routine in software world for TCA984x, the actual address is 7 bit. For Example, 0xE2 = Write Operation on 0x71 I2C address (Address = 0x71 and then we shift left and add last bit for read/write, which has the I2C bus address write of 0xE2).

Table 7-1 shows the TCA9847 address reference.

Table 7-1 Address Reference
INPUTSI2C BUS TARGETADDRESS
A1A0
LSCL0xE0h (hexadecimal)
LL0xE2h (hexadecimal)
LSDA0xE4h (hexadecimal)
L:H0xE6h (hexadecimal)
HSCL0xE8h (hexadecimal)
HL0xEAh (hexadecimal)
HSDA0xECh (hexadecimal)
HH0xEEh (hexadecimal)
SCLSCL0xB0h (hexadecimal)
SCLL0xB2h (hexadecimal)
SCLSDA0xB4h (hexadecimal)
SCLH0xB6h (hexadecimal)
SDASCL0xB8h (hexadecimal)
SDAL0xBAh (hexadecimal)
SDASDA0xBCh (hexadecimal)
SDA10xBEh (hexadecimal)