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

7.3.3 Driver Equivalent Schematics

The driver input is represented by a CMOS inverter stage with a 7V Zener diode. The input stage is high-impedance, and includes an internal pulldown to ground. If the driver input is left open, the driver input provides a low-level signal to the rest of the driver circuitry, resulting in a low-level signal at the driver output pins. The Zener diode provides ESD protection. The driver output stage is a differential pair, one half of which is shown in Figure 7-1. Like the input stage, the driver output includes Zener diodes for ESD protection. The schematic shows an output stage that includes a set of current sources (nominally 3.5mA) that are connected to the output load circuit based upon the input stage signal. To the first order, the output stage acts a constant-current source.

SN55LVTA4-SEP Equivalent Input and Output Schematic DiagramsFigure 7-1 Equivalent Input and Output Schematic Diagrams