SLLSEX9A December   2016  – February 2020 SN65MLVD206B

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic, SN65MLVD206B
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. Table 1.  Absolute Maximum Ratings
    2. Table 2.  ESD Ratings
    3. Table 3.  Recommended Operating Conditions
    4. Table 4.  Thermal Information
    5. Table 5.  Electrical Characteristics
    6. Table 6.  Electrical Characteristics – Driver
    7. Table 7.  Electrical Characteristics – Receiver
    8. Table 8.  Electrical Characteristics – BUS Input and Output
    9. Table 9.  Switching Characteristics – Driver
    10. Table 10. Switching Characteristics – Receiver
    11. 6.1       Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 Power-On-Reset
      2. 8.3.2 ESD Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operation with VCC < 1.5 V
      2. 8.4.2 Operations with 1.5 V ≤ VCC < 3 V
      3. 8.4.3 Operation with 3 V ≤ VCC < 3.6 V
      4. 8.4.4 Device Function Tables
      5. 8.4.5 Equivalent Input and Output Schematic Diagrams
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Multipoint Communications
      2. 9.2.2 Design Requirements
      3. 9.2.3 Detailed Design Procedure
        1. 9.2.3.1  Supply Voltage
        2. 9.2.3.2  Supply Bypass Capacitance
        3. 9.2.3.3  Driver Input Voltage
        4. 9.2.3.4  Driver Output Voltage
        5. 9.2.3.5  Termination Resistors
        6. 9.2.3.6  Receiver Input Signal
        7. 9.2.3.7  Receiver Input Threshold (Failsafe)
        8. 9.2.3.8  Receiver Output Signal
        9. 9.2.3.9  Interconnecting Media
        10. 9.2.3.10 PCB Transmission Lines
      4. 9.2.4 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Microstrip vs. Stripline Topologies
      2. 11.1.2 Dielectric Type and Board Construction
      3. 11.1.3 Recommended Stack Layout
      4. 11.1.4 Separation Between Traces
      5. 11.1.5 Crosstalk and Ground Bounce Minimization
      6. 11.1.6 Decoupling
        1.       (a)
        2.       (b)
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
    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

Package Options

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

11.1.4 Separation Between Traces

The separation between traces depends on several factors; however, the amount of coupling that can be tolerated usually dictates the actual separation. Low noise coupling requires close coupling between the differential pair of an M-LVDS link to benefit from the electromagnetic field cancellation. The traces should be 100-Ω differential and thus coupled in the manner that best fits this requirement. In addition, differential pairs should have the same electrical length to ensure that they are balanced, thus minimizing problems with skew and signal reflection.

In the case of two adjacent single-ended traces, one should use the 3-W rule, which stipulates that the distance between two traces must be greater than two times the width of a single trace, or three times its width measured from trace center to trace center. This increased separation effectively reduces the potential for crosstalk. The same rule should be applied to the separation between adjacent M-LVDS differential pairs, whether the traces are edge-coupled or broad-side-coupled.

SN65MLVD206B lo_3wrsedt_sllsen0.gifFigure 26. 3-W Rule for Single-Ended and Differential Traces (Top View)

You should exercise caution when using autorouters, because they do not always account for all factors affecting crosstalk and signal reflection. For instance, it is best to avoid sharp 90° turns to prevent discontinuities in the signal path. Using successive 45° turns tends to minimize reflections.