analogue switch TS3A4742

Nick Ng

Prodigy 20 points

Other Parts Discussed in Thread: TS3A4742

Hi,

dose anyone know that if do not provide power supply to the normally closed analogue switch TS3A4742,

what would be the state of NCx to COMx, will it still connected with a very low resistance ?

Thanks

over 10 years ago

0 Andrew_Mason over 10 years ago

TI__Expert 6395 points

Hello Nick,

The states of the switches will be open. However this does not mean that the switch supports having voltages greater than the absolute maximum ratings on the pins while the device is not powered.

Regards,

Andrew

0 Nick Ng over 10 years ago in reply to Andrew_Mason

Prodigy 20 points

Hello Andrew,

Thanks for your reply!

Did you mean it will be "normally opened"?

Regards,

Nick

0 Andrew_Mason over 10 years ago in reply to Nick Ng

TI__Expert 6395 points

Hello Nick,

I mean that without power, there will nothing driving the gate bias to close the switch and connect the input to the output. I wouldn't use the term "normally open" because when the device is powered it is actually normally closed until you drive the respective IN pin high.

Regards,

Andrew

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analogue switch TS3A4742