SCPS147E October   2005  – March 2021 PCA9545A

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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
  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
        1. 8.4.1.1 RESET Errata
          1. 8.4.1.1.1 23
          2. 8.4.1.1.2 24
      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 Information Disclaimer
    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 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

6.5 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)
PARAMETERTEST CONDITIONSVCCMINTYP(1)MAXUNIT
VPORRPower-on reset voltage, VCC risingNo load,VI = VCC or GND1.21.5V
VPORFPower-on reset voltage, VCC falling(2)No load,VI = VCC or GND0.81

V

VpassSwitch output voltageVSWin = VCC,ISWout = –100 μA5 V3.6V
4.5 V to 5.5 V2.64.5
3.3 V1.9
3 V to 3.6 V1.62.8
2.5 V1.5
2.3 V to 2.7 V1.12
IOHINTVO = VCC2.3 V to 5.5 V10μA
IOLSCL, SDAVOL = 0.4 V2.3 V to 5.5 V37mA
VOL = 0.6 V610
INTVOL = 0.4 V3
IISCL, SDAVI = VCC or GND2.3 V to 5.5 V±1μA
SC3–SC0, SD3–SD0±1
A1, A0±1
INT3– INT0±1
RESET±1
ICCOperating modefSCL = 100 kHzVI = VCC or GND,IO = 05.5 V312μA
3.6 V311
2.7 V310
Standby modeLow inputsVI = GND,IO = 05.5 V1.6

2

3.6 V

1

1.3

2.7 V0.71.1
High inputsVI = VCC,IO = 05.5 V1.62
3.6 V11.3
2.7 V0.71.1
ΔICCSupply-current changeINT3– INT0One INT3– INT0 input at 0.6 V,
Other inputs at VCC or GND		2.3 V to 5.5 V820μA
One INT3– INT0 input at VCC – 0.6 V,
Other inputs at VCC or GND		820
SCL, SDASCL or SDA input at 0.6 V,
Other inputs at VCC or GND		815
SCL or SDA input at VCC – 0.6 V,
Other inputs at VCC or GND		815
CiA1, A0VI = VCC or GND2.3 V to 5.5 V4.56pF
INT3– INT04.56
RESET4.55.5
Cio(OFF)(3)SCL, SDAVI = VCC or GND,Switch OFF2.3 V to 5.5 V1519pF
SC3–SC0, SD3–SD068
RONSwitch on-state resistanceVO = 0.4 V,IO = 15 mA4.5 V to 5.5 V41016Ω
3 V to 3.6 V51320
VO = 0.4 V,IO = 10 mA2.3 V to 2.7 V71645
(1) All typical values are at nominal supply voltage (2.5-V, 3.3-V, or 5-V VCC), TA = 25°C.
(2) The power-on reset circuit resets the I2C bus logic when Vcc < VPORF.
(3) Cio(ON) depends on the device capacitance and load that is downstream from the device.