SLLSFX4B February   2025  – October 2026 TCAN857-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  ESD Ratings, IEC Specification
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Thermal Information
    6. 6.6  Power Supply Characteristics
    7. 6.7  Dissipation Ratings
    8. 6.8  Electrical Characteristics
    9. 6.9  Switching Characteristics
    10. 6.10 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Pin Description
        1. 8.3.1.1 TXD
        2. 8.3.1.2 GND
        3. 8.3.1.3 VCC
        4. 8.3.1.4 RXD
        5. 8.3.1.5 VIO
        6. 8.3.1.6 CANH and CANL
        7. 8.3.1.7 S (Silent)
      2. 8.3.2 CAN Bus States
      3. 8.3.3 TXD Dominant Timeout (DTO)
      4. 8.3.4 CAN Bus Short-circuit Current Limiting
      5. 8.3.5 Thermal Shutdown (TSD)
      6. 8.3.6 Undervoltage Lockout
      7. 8.3.7 Unpowered Device
      8. 8.3.8 Floating pins
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operating Modes
      2. 8.4.2 Normal Mode
      3. 8.4.3 Silent Mode
      4. 8.4.4 Driver and Receiver Function
  10. 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 CAN Termination
      2. 9.2.2 Detailed Design Procedures
        1. 9.2.2.1 Bus Loading, Length and Number of Nodes
      3. 9.2.3 System Examples
      4. 9.2.4 Application Curve
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

6.8 Electrical Characteristics

Over recommended operating conditions with TJ = -40°C to 150°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Driver Electrical Characteristics
VCANH(D) Bus output voltage (dominant) CANH VTXD = 0V, RL = 50Ω to 65Ω, CL = open, RCM = open 2.75 4.5 V
VCANL(D) Bus output voltage (dominant) CANL VTXD = 0V, RL = 50Ω to 65Ω, CL = open, RCM = open 0.5 2.25 V
VCANH(R)
VCANL(R)		 Bus output voltage (recessive) VTXD = VCC, RL = open (no load), RCM = open 2 3 V
VSYM Driver symmetry
(VO(CANH) + VO(CANL))/VCC		 STB = 0 V, RL = 60Ω, CSPLIT = 4.7nF, CL = open, RCM = open, TXD = 250kHz, 1MHz, 2.5MHz 0.9 1.1 V/V
VSYM_DC DC output symmetry
(VCC - VO(CANH) - VO(CANL))		 RL = 60 Ω, CL = open –400 400 mV
VDIFF(D) Differential output voltage normal mode
Dominant		 VTXD = 0V, RL = 50Ω to 65Ω, CL = open, RCM = open 1.5 3 V
VTXD = 0V, 45Ω ≤ RL ≤ 70Ω, CL = open 1.4 3.3 V
VTXD = 0V, RL = 2240Ω, CL = open 1.5 5 V
VDIFF(R) Differential output voltage normal mode
Recessive		 VTXD = VCC, RL = 60Ω, CL = open –120 12 mV
Normal mode, TXD = VCC, RL = open, CL = open –50 50 mV
ICANH(OS) Short-circuit steady-state output current, Dominant  –3V ≤ VCANH ≤ +18V, CANL = open, VTXD = 0V –115 mA
ICANL(OS)  –3V ≤ VCANL ≤ +18V, CANH = open, VTXD = 0V 115 mA
IOS_REC Short-circuit steady-state output current; Recessive –40V ≤ VBUS ≤ +40V, VBUS = VCANH = VCANL –5 5 mA
Receiver Electrical Characteristics
VDIFF_RX(D) Receiver dominant state differential input voltage range, bus biasing active –12V ≤ VCANL ≤ +12V
–12V ≤ VCANH ≤ +12V		 0.9 8 V
VDIFF_RX(R) Receiver recessive state differential input voltage range, bus biasing active –12V ≤ VCANL ≤ +12V
–12V ≤ VCANH ≤ +12V		 –3 0.5 V
VHYS Hysteresis voltage for input-threshold, normal mode –12V ≤ VCM ≤ 12V 80 mV
VCM Common mode range –12 12 V
ILKG(IOFF) Power-off (unpowered) bus input leakage current CANH = CANL = 5V, VCC = VIO = GND 5 µA
CI Input capacitance to ground (CANH or CANL) VTXD = VCC, VIO = VCC 20 pF
CID Differential input capacitance VTXD = VCC, VIO = VCC 10 pF
RDIFF Differential input resistance during recessive state VTXD = VIO, normal mode
–2V ≤ VCANH ≤ +7V
–2V ≤ VCANL ≤ +7V		 18 90 kΩ
RSE_CANH
RSE_CANL		 Single-ended input resistance during recessive state –2V ≤ VCANH ≤ +7V
–2V ≤ VCANL ≤ +7V		 9 45 kΩ
mR Input resistance matching: [1 – (RIN(CANH) / RIN(CANL))] × 100% VCANH = VCANL = 5V –2% 2%
TXD Terminal (CAN Transmit Data Input)
VIH High-level input voltage TCAN857-Q1 0.7 × VCC V
VIH High-level input voltage TCAN857V-Q1 0.7 × VIO V
VIL Low-level input voltage TCAN857-Q1 0.3 × VCC V
VIL Low-level input voltage TCAN857V-Q1 0.3 × VIO V
IIH High-level input leakage current VTXD = VCC = VIO = 5.25V –2.5 0 1 µA
IIL Low-level input leakage current VTXD = 0V, VCC = VIO = 5.25V –200 –20 µA
ILKG(OFF) Unpowered leakage current VTXD = 5.25V, VCC = VIO = 0V –1 0 1 µA
CI Input Capacitance 2 pF
RXD Terminal (CAN Receive Data Output)
VOH High-level input voltage TCAN857-Q;1 IO = –2mA 0.8 × VCC V
VOH High-level input voltage TCAN857V-Q1; IO = –2mA 0.8 × VIO   V
VOL Low-level input voltage TCAN857-Q1; IO = 2mA 0.2 × VCC V
VOL Low-level input voltage TCAN857V-Q1; IO = 2mA   0.2 × VIO V
ILKG(OFF) Unpowered leakage current VRXD = 5.25V, VCC = VIO = 0V –1 0 1 µA
S Terminal (Silent Mode Input)
VIH High-level input voltage
TCAN857-Q1

 0.7 × VCC V
VIH High-level input voltage TCAN857V-Q1 0.7 × VIO V
VIL Low-level input voltage
TCAN857-Q1

 0.3 × VCC V
VIL Low-level input voltage TCAN857V-Q1 0.3 × VIO V
IIH High-level input leakage current S VCC = VIO = S = 5.25V –2 2 µA
IIL Low-level input leakage current S VCC = VIO = 5.25V, S = 0V –20 –2 µA
ILKG(OFF) Unpowered leakage current S = 5.25V, VCC = VIO = 0V –1 0 1 µA