TS3USB221: 4-channel alternative of TS3USB221

Roy Hsu

Genius 9320 points

Part Number: TS3USB221
Other Parts Discussed in Thread: TS3USBCA4

Hi Team,

My customer is now using our TS3USB221 and is asking for a 4-channel input (4:1 and 1:4) alternative.

Do you have any recommendation?

Thanks!

Roy Hsu

over 6 years ago

0 Andrew Wallace over 6 years ago

TI__Prodigy 100 points

Roy,

We do not have a dedicated USB 2.0 (4:1) mux available. I think the best option here is the TS3USBCA420. It is (4:1) bi-directional mux and designed for USB Type-C side-band switching. It is controlled by I2C and may have lower bandwidth on the LnX channels for USB High-Speed. This part will RTM in July. Here is the link to the product page http://www.ti.com/product/TS3USBCA4

Thanks,

Andrew Wallace

0 Roy Hsu over 6 years ago in reply to Andrew Wallace

TI__Genius 9320 points

Hi Andrew,

Could you please share more information on this part? You can send it through my email: royhsu@ti.com

Thanks!
Roy Hsu

0 Andrew Wallace over 6 years ago in reply to Roy Hsu

TI__Prodigy 100 points

Roy,

We like to reply to anything that is not confidential on the E2E forum, this allows for others to use this information for their projects. What other information would you like?

Thanks ,

Andrew Wallace

0 Roy Hsu over 6 years ago in reply to Andrew Wallace

TI__Genius 9320 points

Hi Andrew,

The complete datasheet, please!

Thanks!
Roy Hsu

0 Andrew Wallace over 6 years ago in reply to Roy Hsu

TI__Prodigy 100 points

Roy,

Since the product is in preview you will have to submit a request for the full datasheet on the product page I linked.

Thanks,

Andrew Wallace

0 Roy Hsu over 6 years ago in reply to Andrew Wallace

TI__Genius 9320 points

Hi Andrew,

I have submitted the request. Please help process it!

Thanks!

Roy Hsu

0 Roy Hsu over 6 years ago in reply to Roy Hsu

TI__Genius 9320 points

Hi Andrew,

Seems like the TS3USBCA420 can only support up to 3 channels of high speed signal ( 500 MHz). I think the MIC_GND1 and MIC_GND2 are for low speed signals (audio).

Is my understanding correct?

Thanks!

Roy Hsu

0 Andrew Wallace over 6 years ago in reply to Roy Hsu

TI__Prodigy 100 points

Roy,

The MIC_Ground channel is designed for audio, but it actually has better bandwidth than the Ln channels because of it's lower R_on. I believe the datasheet specifies that channel to have a typical -3dB bandwidth of 630 MHz.

Andrew Wallace

0 Roy Hsu over 6 years ago in reply to Andrew Wallace

TI__Genius 9320 points

Hi Andrew,

I couldn't find the information you mentioned about. Could you point out which page it is?

Thanks!

Roy Hsu

0 Andrew Wallace over 6 years ago in reply to Roy Hsu

TI__Prodigy 100 points

Roy,

The R_{ON_AUDIO} and BW_AUDIO. parameters are near the top of page 7. In section 6.5 of the datasheet.

Andrew Wallace

0 Roy Hsu over 6 years ago in reply to Andrew Wallace

TI__Genius 9320 points

Hi Andrew,

The datasheet I downloaded from the MySecureSoftware page does not have Section 6.5. It jumps into Section 7 right after 6.1.

Could you please send me the one you got?

Thanks!

Roy Hsu

0 Andrew Wallace over 6 years ago in reply to Roy Hsu

TI__Prodigy 100 points

Roy,

I didn't realize that your data sheet did not have that section. Since the part has not RTM we are still finalizing the electrical characteristics and won't be able to release that data yet. I will let you know when it becomes available.

Thanks,

Andrew Wallace

Interface

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TS3USB221: 4-channel alternative of TS3USB221