SLLA626 September 2023
In addition to pinout and package differences, HD3SS460 and TMUXHS4446 also differ in that HD3SS460 supports USB 3.2 Gen 1 x 1 and DP 1.2, and TMUXHS4446 supports USB 3.2 Gen 2 x 1and DP 1.4.
As mentioned in Table 2-4, the loss budget for each device differs in that for HD3SS460, the loss budget depends on the type of connectors used, but for TMUXHS4446, the loss budget is a maximum of 2 3 dB no matter which connectors are used. For a visual depiction and comparison of the loss budgets of USB 3.2 Gen 1 and USB 3.2 Gen 2, see the System Loss topic in USB System Design Considerations: Switches and Redrivers, white paper.
Table 2-4 addresses the primary differences between HD3SS460 and TMUXHS4446 as related to the distinct characteristics of USB 3.2 Gen 1 x 1, DP 1.2, USB 3.2 Gen 2 x 1, and DP 1.4.
Device | HD3SS460 | TMUXHS4446 | ||
---|---|---|---|---|
Protocol | USB 3.2 Gen 1 x 1 | DP 1.2 | USB 3.2 Gen 2 x 1 | DP 1.4 |
Speed | 5Gbps | 5.4Gbps | 10Gbps | 8.1Gbps |
Loss budget | Different for each connector | 23 dB for all connectors |
As evidenced by the ability to support USB 3.2 Gen 2 and DP 1.4, TMUXHS4446 offers customers a design that enables higher bandwidth and a more robust loss budget.