TCA9539 Partial Power Down I2C State

John Wallace1

Mastermind 38960 points

Other Parts Discussed in Thread: TCA9539

Does the TCA9539 support “Partial power down”, or high Z state on the I2C bus pins when power is off?

over 9 years ago

0 Siby James over 9 years ago

TI__Expert 5140 points

Hi John,

The TCA9539, will not have a known state when the supply voltage is powered off. There is a potential for leakage to a rail, but this goes back to it being in an unknown state.

Thanks,
Siby

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TCA9539 Partial Power Down I2C State