SLLSFJ3C February   2021  – December 2021 TCAN1044A-Q1 , TCAN1044AV-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  ESD Ratings - IEC Specifications
    4. 7.4  Recommended Operating Conditions
    5. 7.5  Thermal Characteristics
    6. 7.6  Supply Characteristics
    7. 7.7  Dissipation Ratings
    8. 7.8  Electrical Characteristics
    9. 7.9  Switching Characteristics
    10. 7.10 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Pin Description
        1. 9.3.1.1 TXD
        2. 9.3.1.2 GND
        3. 9.3.1.3 VCC
        4. 9.3.1.4 RXD
        5. 9.3.1.5 VIO
        6. 9.3.1.6 CANH and CANL
        7. 9.3.1.7 STB (Standby)
      2. 9.3.2 CAN Bus States
      3. 9.3.3 TXD Dominant Timeout (DTO)
      4. 9.3.4 CAN Bus short-circuit current limiting
      5. 9.3.5 Thermal Shutdown (TSD)
      6. 9.3.6 Undervoltage Lockout
      7. 9.3.7 Unpowered Device
      8. 9.3.8 Floating pins
    4. 9.4 Device Functional Modes
      1. 9.4.1 Operating Modes
      2. 9.4.2 Normal Mode
      3. 9.4.3 Standby Mode
        1. 9.4.3.1 Remote Wake Request via Wake-Up Pattern (WUP) in Standby Mode
      4. 9.4.4 Driver and Receiver Function
  10. 10Application Information Disclaimer
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
        1. 10.2.1.1 CAN Termination
      2. 10.2.2 Detailed Design Procedures
        1. 10.2.2.1 Bus Loading, Length and Number of Nodes
    3. 10.3 System Examples
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Receiving Notification of Documentation Updates
    2. 13.2 Support Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary

Package Options

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

9.4.4 Driver and Receiver Function

The TCAN1044A-Q1 logic I/Os support CMOS levels with respect to either VCC for 5-V systems (TCAN1044A-Q1) or VIO for compatibility with MCUs that support 1.8-V, 2.5-V, 3.3-V, or 5-V systems (TCAN1044AV-Q1).

Table 9-5 Driver Function Table
Device Mode TXD Input(2) Bus Outputs Driven Bus State(2)
CANH CANL
Normal Low High Low Dominant
High or open High impedance High impedance Biased recessive
Standby X High impedance High impedance Biased to ground
(2) X = irrelevant
(2) For bus state and bias see Figure 9-2 and Figure 9-3
Table 9-6 Receiver Function Table Normal and Standby Mode
Device ModeCAN Differential Inputs VID = VCANH – VCANLBus StateRXD Pin
NormalVID ≥ 0.9 VDominantLow
0.5 V < VID < 0.9 VUndefinedUndefined

VID ≤ 0.5 V

RecessiveHigh
StandbyVID ≥ 1.15 VDominantHigh
Low if a remote wake event occurred
See Figure 9-5
0.4 V < VID < 1.15 VUndefined
VID ≤ 0.4 VRecessive
AnyOpen (VID ≈ 0 V)OpenHigh