SCPS234A September   2016  – February 2023 TCA6408A-Q1

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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 Reset Timing Requirements
    8. 6.8 Switching Characteristics
    9. 6.9 Typical Characteristics
  7. Parameter Measurement Information
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 Voltage Translation
      2. 8.3.2 I/O Port
      3. 8.3.3 Interrupt Output ( INT)
      4. 8.3.4 Reset Input ( RESET)
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-On Reset (POR)
      2. 8.4.2 Powered-Up
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
      2. 8.5.2 Bus Transactions
        1. 8.5.2.1 Writes
        2. 8.5.2.2 Reads
    6. 8.6 Register Map
      1. 8.6.1 Device Address
      2. 8.6.2 Control Register and Command Byte
      3. 8.6.3 Register Descriptions
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Calculating Junction Temperature and Power Dissipation
        2. 9.2.1.2 Minimizing ICC When I/O is Used to Control LEDs
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 Power-On Reset Requirements
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Trademarks
    3. 10.3 Electrostatic Discharge Caution
    4. 10.4 Glossary
  11. 11Support Resources
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Electrical Characteristics

over recommended operating free-air temperature range, VCCI = 1.65 V to 3.6 V (unless otherwise noted)
PARAMETERTEST CONDITIONSVCCPMINTYP(1)MAXUNIT
VIKInput diode clamp voltageII = –18 mA1.65 V to 3.6 V–1.2V
VPORRPower-on reset voltage, VCCP rising(2)VI = VCCP or GND, IO = 01.65 V to 3.6 V1.21.5V
VPORFPower-on reset voltage, VCCP falling(2)VI = VCCP or GND, IO = 01.65 V to 3.6 V0.61V
VOHP-port high-level output voltageIOH = –8 mA1.65 V1.2V
2.3 V1.8
3 V2.6
3.6 V3.3
IOH = –10 mA1.65 V1.0
2.3 V1.7
3 V2.5
3.6 V3.2
VOLP-port low-level output voltageIOL = 8 mA1.65 V0.45V
2.3 V0.25
3 V0.25
3.6 V0.23
IOL = 10 mA1.65 V0.6
2.3 V0.3
3 V0.25
3.6 V0.23
IOLSDAVOL = 0.4 V1.65 V to 3.6 V3mA
INT315
IISCL, SDA, RESETVI = VCCI or GND1.65 V to 3.6 V±0.1μA
ADDRVI = VCCP or GND±0.1
IIHP-portVI = VCCP1.65 V to 3.6 V1μA
IILP-portVI = GND1.65 V to 3.6 V1μA
ICC
(ICCI + ICCP)
Operating modeSDA,
P-port,
ADDR,
RESET
VI = VCC or GND, I/O = inputs,
fSCL = 400 kHz, No load
2.3 V to 3.6 V936μA
1.65 V to 2.3 V533
Standby modeSCL, SDA,
P-port,
ADDR,
RESET
VI = VCC or GND, I/O = inputs,
fSCL = 0 kHz, No load
2.3 V to 3.6 V1.210
1.65 V to 2.3 V0.67
ΔICCIAdditional current in standby modeSCL, SDAOne input at VCCI – 0.6 V,
Other inputs at VCCI or GND
1.65 V to 3.6 V610μA
RESETRESET at VCCI – 0.6 V,
Other inputs at VCCI or GND
655
ΔICCPP-port, ADDROne input at VCCP – 0.6 V,
Other inputs at VCCP or GND
1.65 V to 3.6 V680μA
CiSCLVI = VCCI or GND1.65 V to 3.6 V79pF
CioSDAVIO = VCCI or GND1.65 V to 3.6 V810.5pF
P-portVIO = VCCP or GND78
All typical values are at nominal supply voltage (1.8-V, 2.5-V, or 3.3-V VCC) and TA = 25°C.
When power (from 0 V) is applied to VCCP, an internal power-on reset holds the TCA6408A-Q1 in a reset condition until VCCP has reached VPORR. At that time, the reset condition is released, and the TCA6408A-Q1 registers and I2C/SMBus state machine initialize to their default states. After that, VCCP must be lowered to below VPORF and back up to the operating voltage for a power-reset cycle.