SCPS205B April   2014  – November 2019 TCA9546A

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
  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 TCA9546A 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(2)

over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCC MIN TYP(1) MAX UNIT
VPORR Power-on reset voltage, VCC rising No load, VI = VCC or GND(4) 1.2 1.5 V
VPORF Power-on reset voltage, VCC falling(3) No load, VI = VCC or GND(4) 0.8 1
Vpass Switch output voltage VSWin = VCC, ISWout = –100 μA 5 V 3.6 V
4.5 V to 5.5 V 2.6 4.5
3.3 V 1.9
3 V to 3.6 V 1.6 2.8
2.5 V 1.4
2.3 V to 2.7 V 1.0 1.8
1.8 V 0.8
1.65 V to 1.95 V 0.5 1.1
IOL SDA VOL = 0.4 V 1.65 V to 5.5 V 3 7 mA
VOL = 0.6 V 6 10
II SCL, SDA VI = VCC or GND(4) 1.65 V to 5.5 V ±1 μA
SC3–SC0, SD3–SD0 ±1
A2–A0 ±1
RESET ±1
ICC Operating mode fSCL = 400 kHz VI = VCC or GND(4)
IO = 0
tr,max = 300 ns		 5.5 V 50 μA
3.6 V 20
2.7 V 11
1.65 V 6
fSCL = 100 kHz VI = VCC or GND(4)
IO = 0
tr,max = 1 µs		 5.5 V 35
3.6 V 14
2.7 V 5
1.65 V 2
Standby mode Low inputs VI = GND(4)
IO = 0		 5.5 V 1.6 2
3.6 V 1.0 1.3
2.7 V 0.7 1.1
1.65 V 0.4 0.55
High inputs VI = VCC
IO = 0		 5.5 V 1.6 2
3.6 V 1.0 1.3
2.7 V 0.7 1.1
1.65 V 0.4 0.55
ΔICC Supply-current change SCL, SDA SCL or SDA input at 0.6 V,
Other inputs at VCC or GND(4) 		1.65 V to 5.5 V 2 15 μA
SCL or SDA input at VCC – 0.6 V,
Other inputs at VCC or GND(4) 		1.65 V to 5.5 V 2 15
Ci A2–A0 VI = VCC or GND(4) 1.65 V to 5.5 V 4.5 6 pF
RESET 4.5 5.5
Cio(OFF)(5) SCL, SDA VI = VCC or GND(4) Switch OFF 1.65 V to 5.5 V 15 19 pF
SC3–SC0, SD3–SD0 6 8
RON Switch on-state resistance VO = 0.4 V IO = 15 mA 4.5 V to 5.5 V 4 10 16 Ω
3 V to 3.6 V 5 13 20
VO = 0.4 V IO = 10 mA 2.3 V to 2.7 V 7 16 45
1.65 V to 1.95 V 10 25 70
(1) All typical values are at nominal supply voltage (1.8-V, 2.5-V, 3.3-V, or 5-V VCC), TA = 25°C.
(2) For operation between specified voltage ranges, refer to the worst-case parameter in both applicable ranges.
(3) The power-on reset circuit resets the I2C bus logic with VCC < VPORF.
(4) RESET = VCC (held high) when all other input voltages, VI = GND.
(5) Cio(ON) depends on internal capacitance and external capacitance added to the SCn lines when channels(s) are ON.