MAX3243: lowest supply voltage

[FAE] Andrew Wang

Genius 10685 points

Part Number: MAX3243

Hi Team,

Customer would like to double check what is lowest legal supply voltage for this device?

The lowest voltage customer observed on their system during power rail swap is about 3.9V.

They found at this voltage, communication seems still fine, thanks for checking.

The spec said Vcc = 3.3V, MIN is 3V, Vcc = 5V, MIN is 4.5V. So if lowest voltage is 3V or 4.5V?

Thanks.

Andrew

over 4 years ago

+1 Clemens Ladisch over 4 years ago

Guru 321710 points

This device works with any supply voltage betwen 3 V and 5.5 V.

The recommended operating conditions table lists two ranges because certain eletrical characteristics are specified for those ranges. For voltages in between, those electrical charactericstics will have values in between.

+1 Eric Hackett over 4 years ago in reply to Clemens Ladisch

TI__Guru 74372 points

Thanks for the help Clemens!

Andrew,

As Clemens said, this device is rated to work at supply voltages between 3V and 5.5V. Please let us know if you have any questions.

Regards,

Eric Hackett

0 [FAE] Andrew Wang over 4 years ago in reply to Eric Hackett

TI__Genius 10685 points

Thank you both, got it!

Andrew

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MAX3243: lowest supply voltage