SLLSEM7D January   2015  – January 2017 HD3SS460

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 High Speed Port Performance Parameters
    7. 7.7 High Speed Signal Path Switching Characteristics
    8. 7.8 Timing Diagrams
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 High Speed Differential Signal Switching
      2. 8.3.2 Low Speed SBU Signal Switching
      3. 8.3.3 Output Enable and Power Savings
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device High Speed Switch Control Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 USB SS and DP as Alternate Mode
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Critical Routing
      2. 11.1.2 General Routing/Placement Rules
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

8 Detailed Description

8.1 Overview

The HD3SS460 is a high-speed bi-directional passive 4-6 cross-point switch in mux or demux configurations. Based on control pin POL the device provides switching to accommodate USB Type-C plug flipping. The device provides multiple signal switching options that allow system implementation flexibility.

The HD3SS460 is a generic analog, differential passive switch that can work for any high speed interface applications as long as it is biased at a common mode voltage range of 0-2 V and has differential signaling with differential amplitude up to 1800 mVpp. It employs an adaptive tracking that ensures the channel remains unchanged for entire common mode voltage range

Excellent dynamic characteristics of the device allow high speed switching with minimum attenuation to the signal eye diagram with very little added jitter.

8.2 Functional Block Diagram

HD3SS460 FP_schem_SLLSEM7.gif

8.3 Feature Description

8.3.1 High Speed Differential Signal Switching

Based on control pin AMSEL the device provides muxing options of:

  1. 1 port (RX and TX) USB3.1 SS data / 2Ch video (or any other Alternate Mode data)
  2. All 4Ch video (or any other Alternate Mode data)
  3. 1 port (RX and TX) USB3.1 SS data
  4. 1 port (RX and TX) USB3.1 SS data / 2Ch video (or any other Alternate Mode data) with option of choosing video from two different source/sink
  5. 1 port (RX and TX) USB3.1 SS data / 2Ch video (or any other Alternate Mode data) with option of choosing video 2 Ln Video or 1 Ln Video from two different source/sink

8.3.2 Low Speed SBU Signal Switching

The device also provides cross point muxing for low speed SBU signals as needed in USB Type-C flippable connector implementation. The device provides the option to choose the USB only implementation where SBU ports are in tri-state.

8.3.3 Output Enable and Power Savings

The HD3SS460 has two power modes, active/normal operating mode and standby/shutdown mode. During standby mode, the device consumes very little current to save the maximum power. To enter standby mode, the EN control pin is pulled low and must remain low. For active/normal operation, the EN control pin should be pulled high to VDD through a resistor or dynamically controlled to switch between H or M.

HD3SS460 consumes <2 mW of power when operational and <5 µW in shutdown mode, exercisable by the EN pin.

8.4 Device Functional Modes

8.4.1 Device High Speed Switch Control Modes

Table 1. MUX Control for High Speed and Low Speed SBU Channels

POL AMSEL EN CONFIGURATIONS HIGH SPEED SIGNAL FLOW(1) SBU SIGNAL FLOW
L L H 2CH USBSS + 2CH AM (Normal)
HD3SS460 D001_SLLSEM7.gif
HD3SS460 D002_SLLSEM7.gif
H L H 2CH USBSS + 2CH AM (Flipped)
HD3SS460 D003_SLLSEM7.gif
HD3SS460 D004_SLLSEM7.gif
L H H 4CH AM (Normal)
HD3SS460 D005_SLLSEM7.gif
HD3SS460 D002_SLLSEM7.gif
H H H 4CH AM (Flipped)
HD3SS460 D006_SLLSEM7.gif
HD3SS460 D004_SLLSEM7.gif
L M H 2CH USBSS (Normal)
HD3SS460 D007_SLLSEM7.gif
All Low Speed SBU Ports HighZ
H M H 2CH USBSS (Flipped)
HD3SS460 D008_SLLSEM7.gif
All Low Speed SBU Ports HighZ
L M M 2CH USBSS + 2CH AM (Normal)
HD3SS460 D009_SLLSEM7.gif
HD3SS460 D002_SLLSEM7.gif
H M M 2CH USBSS + 2CH AM (Flipped)
HD3SS460 D010_SLLSEM7.gif
HD3SS460 D004_SLLSEM7.gif
L L M 2CH USBSS + 2CH AM from alternate GPU (Normal)
HD3SS460 D011_SLLSEM7.gif
HD3SS460 D002_SLLSEM7.gif
H L M 2CH USBSS + 2CH AM from alternate GPU (Flipped)
HD3SS460 D012_SLLSEM7.gif
HD3SS460 D004_SLLSEM7.gif
L H M Reserved Reserved Reserved
H H M Reserved Reserved Reserved
X X L All High Speed Ports HighZ All High Speed Ports HighZ All Low Speed SBU Ports HighZ
(1) All positive signals connect to positive and negative to negative