JAJSFJ7A May   2018  – September 2018 HD3SS3202

PRODUCTION DATA.  

  1. 1     特長
  2. 2     アプリケーション
  3. 3     概要
  4. DeviceImages
    1. 概略回路図 5
  5. 4     改訂履歴
  6. 5     Pin Configuration and Functions
    1. Pin Functions
  7. 6     Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 High-Speed Performance Parameters
    7. 6.7 Switching Characteristics
    8. 6.8 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 Output Enable and Power Savings
    4. 8.4 Device Functional Modes
  10. 9     Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Down Facing Port for USB3.1 Type C
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
    3. 9.3 Systems Examples
      1. 9.3.1 Up Facing Port for USB3.1 Type C
      2. 9.3.2 PCIE/USB
      3. 9.3.3 PCIE/eSATA
      4. 9.3.4 USB/eSATA
      5. 9.3.5 MIPI Camera Serial Interface
  11. 10    Power Supply Recommendations
  12. 11    Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12    デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントの更新通知を受け取る方法
    2. 12.2 コミュニティ・リソース
    3. 12.3 商標
    4. 12.4 静電気放電に関する注意事項
    5. 12.5 Glossary
  14. 13    メカニカル、パッケージ、および注文情報

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

Application Information

The HD3SS3202 is a generic 2-channel high-speed mux/demux type of switch that can be used for routing high-speed signals between two different locations on a circuit board. The HD3SS3202 supports several high-speed data protocols with a differential amplitude of <1800 mVpp and a common mode voltage of < 2 V, as with USB 3.1 and DisplayPort 1.2. The device has one select input (SEL) pin that can be controlled by an available GPIO pin within a system or from a microcontroller.

The HD3SS3202 with its adaptive common mode tracking technology can support applications where the common mode is different between the RX and TX pair. The two USB3.1 Type C connector applications show both a host and device side. The cable between the two connectors swivels the pairs to properly route the signals to the correct pin. The other applications are more generic because different connectors can be used.

Many interfaces require AC coupling between the transmitter and receiver. The 0201 capacitors are the preferred option to provide AC coupling; 0402 size capacitors also work. Avoid the capacitors greater than 0402 and C-packs. When placing AC coupling capacitors, symmetric placement is best. The designer should place them along the TX pairs on the system board, which are usually routed on the top layer of the board.

The AC coupling capacitors have several placement options. Because the HD3SS3202 requires a bias voltage, the designer must place the capacitors on one side of the switch. If they are placed on both sides of the switch, a biasing voltage should be provided. Figure 5 shows a few placement options. The coupling capacitors are placed between the HD3SS3202 and endpoint. In this situation, the HD3SS3202 is biased by the system/host controller.

HD3SS3202 sch_ac_switch_ep_laseo1.gifFigure 5. AC Coupling Capacitors between HD3SS3202 TX and Endpoint TX

In Figure 6, the coupling capacitors are placed on the host transmit pair and endpoint transmit pair. In this situation, the switch on top is biased by the endpoint and the lower switch is biased by the host controller.

HD3SS3202 sch_ac_host_ep_laseo1.gifFigure 6. AC Coupling Capacitors on Host TX and Endpoint TX

If the common mode voltage in the system is higher than 2 V, the coupling capacitors are placed on both sides of the switch (shown in Figure 7). A biasing voltage of < 2 V is required in this case.

HD3SS3202 sch_ac_both_laseo1.gif
VBIAS can be GND
Capacitor and resistor values depend upon application.
Figure 7. AC Coupling Capacitors on Both Sides of Switch

The HD3SS3202 can be used with the USB Type C connector to support the connector’s flip ability. Figure 8 provides the generic location for the AC coupling capacitors for this application.

HD3SS3202 sch_ac_for_USB_C_slaseo1.gifFigure 8. AC Coupling Capacitors for USB Type C