ISO1540: VCC1 and VCC2 voltage level

Antony Lin

Part Number: ISO1540

Hi,

Is there a rule that VCC1 voltage level must be higher than VCC2 voltage level? I didn't see such rule from the datasheet, but not sure if it's ok that VCC2(5V) is higher than VCC1(3.3V). Please help to double confirm this.

Thanks!

Antony

over 7 years ago

0 Clemens Ladisch over 7 years ago

Guru 243980 points

Everything is symmetrical; and figure 30 shows that VCC1 < VCC2 is allowed.

0 Tejas Hommaradi over 7 years ago

TI__Intellectual 2855 points

HI Clemens Ladisch,

Thank you for replying to the query.

Antony,

Yes, As Clemens mentioned VCC1 < VCC2 is allowed,

The supplies VCC1 and VCC2 are independent. You may choose any value of VCC1 and VCC2 from recommended operating range.

Regards

Tejas

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ISO1540: VCC1 and VCC2 voltage level