ZHCSJK4G June   2009  – March 2021 PCA9548A

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  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 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 System Impact
          2. 8.4.1.1.2 System Workaround
      2. 8.4.2 Power-On Reset
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
    6. 8.6 Register Maps
      1. 8.6.1 Device Address
      2. 8.6.2 Control Register
      3. 8.6.3 Bus Transactions
        1. 8.6.3.1 Writes
        2. 8.6.3.2 Reads
  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 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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Electrical Characteristics

VCC = 2.3 V to 3.6 V, 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 GND

0.8

1

V

Vo(sw)Switch output voltageVi(sw) = 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
IOLSDAVOL = 0.4 V2.3 V to 5.5 V36mA
VOL = 0.6 V69
IISCL, SDAVI = VCC or GND2.3 V to 5.5 V–11μA
SC7–SC0, SD7–SD0–11
A2–A0–11
RESET–11
ICCOperating modefSCL = 400 kHzVI = VCC or GND, IO = 05.5 V5080μA
3.6 V2035
2.7 V1120
fSCL = 100 kHzVI = VCC or GND, IO = 05.5 V930
3.6 V615
2.7 V48
Standby modeLow inputsVI = GND, IO = 05.5 V0.22
3.6 V0.12
2.7 V0.11
High inputsVI = VCC, IO = 05.5 V0.22
3.6 V0.12
2.7 V0.11
ΔICCSupply-current changeSCL, SDASCL or SDA input at 0.6 V,
Other inputs at VCC or GND
2.3 V to 5.5 V320μA
SCL or SDA input at VCC – 0.6 V,
Other inputs at VCC or GND
320
CiA2–A0VI = VCC or GND2.3 V to 5.5 V45pF
RESET45
SCLVI = VCC or GND, Switch OFF2028
Cio(off)(3)SDAVI = VCC or GND, Switch OFF2.3 V to 5.5 V2028pF
SC7–SC0, SD7–SD05.57.5
RONSwitch-on resistanceVO = 0.4 V, IO = 15 mA4.5 V to 5.5 V41020
3 V to 3.6 V51230
VO = 0.4 V, IO = 10 mA2.3 V to 2.7 V71545
All typical values are at nominal supply voltage (2.5-, 3.3-, or 5-V VCC), TA = 25°C.
The power-on reset circuit resets the I2C bus logic with VCC < VPORF.
Cio(ON) depends on internal capacitance and external capacitance added to the SCn lines when channels(s) are ON.