ULN2003 unused input and output pins

Shinichi Inoue

Guru 20926 points

Dear Specialists

My customer wants to know how to treat unused channel properly.

Could you please advise?

What should we do with the ULN2003 unused input and output pins ?

What is your recommendation ?

Best Regards,

Shinichi

over 10 years ago

0 Michael J Schultis over 10 years ago

TI__Mastermind 24915 points

Hello Shinichi,

Typically you can just leave the input and output pins open.
If something like a stepper motor is used and there are negative transients then grounding the inputs and outputs may help more.

Best,
Michael

0 Shinichi Inoue over 10 years ago in reply to Michael J Schultis

Guru 20926 points

Dear Michael

Thank you for your reply.

I send your answer to the customer.

I appreciate your great help.

Best regards,

Shinichi

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ULN2003 unused input and output pins