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MAX3232E: Background for add 1μF capacitor on new revision datasheet

Part Number: MAX3232E

Hi Team,

MAX3232E datasheet on new revision (Rev E) is add "1-µF capacitor is required between VCC and GND to meet the specified IEC 16000-4-2 rating" from old revision.

①My customers consider the placement of 1µF capacitors a common design matter. Please tell me the reason why it was added to the data sheet.

②Does the addition of a 1µF capacitor be required for die-changed products?

Your prompt support would be highly appreciated, thank you!