SLLSFW3A April   2025  – June 2025 SN55LVTA4-SEP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Unused Enable Pins
      2. 7.3.2 Driver Disabled Output
      3. 7.3.3 Driver Equivalent Schematics
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Typical Application
        1. 8.1.1.1 Detailed Design Procedure
          1. 8.1.1.1.1 Interconnecting Media
        2. 8.1.1.2 Design Requirements
        3. 8.1.1.3 Application Curve
      2. 8.1.2 Cold Sparing
      3. 8.1.3 Power Supply Recommendations
        1. 8.1.3.1 Supply Bypass Capacitance
      4. 8.1.4 Layout
        1. 8.1.4.1 Layout Guidelines
          1. 8.1.4.1.1 Microstrip vs. Stripline Topologies
          2. 8.1.4.1.2 Dielectric Type and Board Construction
          3. 8.1.4.1.3 Recommended Stack Layout
          4. 8.1.4.1.4 Separation Between Traces
          5. 8.1.4.1.5 Crosstalk and Ground Bounce Minimization
        2. 8.1.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Related Documentation
  11. 10Receiving Notification of Documentation Updates
  12. 11Support Resources
  13. 12Trademarks
  14. 13Electrostatic Discharge Caution
  15. 14Glossary
  16. 15Revision History
  17. 16Mechanical, Packaging, and Orderable Information
8.1.4.1.1 Microstrip vs. Stripline Topologies

As per the LVDS Application and Data Handbook, printed-circuit boards usually offer designers two transmission line options: Microstrip and stripline. Microstrips are traces on the outer layer of a PCB, as shown in Figure 8-5.

SN55LVTA4-SEP Microstrip TopologyFigure 8-5 Microstrip Topology

Also, striplines are traces between two ground planes. Striplines are less prone to emissions and susceptibility problems because the reference planes effectively shield the embedded traces. However, from the standpoint of high-speed transmission, juxtaposing two planes creates additional capacitance. TI recommends routing LVDS signals on microstrip transmission lines, if possible. The PCB traces allow designers to specify the necessary tolerances for ZO based on the overall noise budget and reflection allowances.

SN55LVTA4-SEP Stripline TopologyFigure 8-6 Stripline Topology