TUSB3410: TUSB3410 Power Sequence

A.Sakai

Prodigy 120 points

Part Number: TUSB3410

I'm using TUSB3410 with external oscillator and external 1.8V power supply as below URL.

e2e.ti.com/.../572186

I'd like to make sure is there any required sequece for 3.3V and 1.8V power supply.

The current sequence of my circuit keeps 1.8V below 3.3V power supply as following waveform picture.

Is this available?

over 8 years ago

0 Jorge Llamas (SWAT) over 8 years ago

TI__Expert 7395 points

Hello,

This looks good; just make sure to comply with the reset timing detailed on the datasheet at section 4.6.2.

- Reset pulse must last over 100uS and under 30ms
- Clock must be valid for at least 60uS before reset is de-asserted.

Regards,
Jorge

0 Roberto Diaz over 8 years ago

TI__Genius 11255 points

Hello A.Sakai,

They look good, additional for you implementation make sure VDD18 supplies must have 0.1-μF bypass capacitors to VSS (ground) to ensure proper operation. One capacitor per power terminal is sufficient and should be placed as close to the terminal as possible to minimize trace
length.

Regards,
Roberto

0 A.Sakai over 8 years ago

Prodigy 120 points

Hi all,

Thank you for your answers!

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TUSB3410: TUSB3410 Power Sequence