TCA9546A: Power supplying sequence

Antony Lin

Part Number: TCA9546A

Hi,

The application we have now will have the same voltage level at Vdpum and Vdpu0~vdpu3. The question is, does it matter if Vdpum is supplied before Vdpu0~vdpu3?

Thanks!

Antony

over 7 years ago

0 BOBBY over 7 years ago

TI__Guru 72090 points

Hey Anthony,

Our device will be high impedance between the channels if Vcc is GND and channels are not enabled so the pull up voltages can power up in any order.

-Bobby

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TCA9546A: Power supplying sequence