Current can flow between common and normally closed pins even if the IC has no power

Danilo A.

Hi Team,

We have a customer looking for an analog switch which allows current to flow between common and normally closed pins even if the IC has no power. Do we this type of device?

Regards,

Danilo

over 4 years ago

0 Clemens Ladisch over 4 years ago

Guru 317280 points

This would require a switch with depletion-mode FETs. TI does not make such devices.

0 dimitri james over 4 years ago

TI__Genius 10652 points

Danilo,

Clemens is correct. We do not have such a device. the closest thing you can get to such a device is a discrete diode.

Many of our switches can technnically flow current thru the body diode (PMOS load switch only), but we strongly recommend against that.

Why would you need a switch to flow current even if it has no power? If voltage is present at the input, this insinutates that the IC should have power...

Best

Dimitri

0 Danilo A. over 4 years ago in reply to dimitri james

TI__Mastermind 28750 points

Hi Clemens and Dmitri,

Thank you for the clarification.

Regards,

Danilo

Switches & multiplexers

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Current can flow between common and normally closed pins even if the IC has no power