[ DS25CP104A ] Unused Pins

Kenichiro

Other Parts Discussed in Thread: DS25CP104A

Hi,

My customer uses DS25CP104A device just for one ch signalling due to some reason.

(Use IN0+/- to OUT0+/- only)

For this case, how should we do for some unused pins?

1: S11/S10 for OUT1, S21/S20 for OUT2 and S31/30 for OUT3 pins

2: IN1+/-, IN2+/- and IN3+/- pins

3: OUT1+/-, OUT2+/- and OUT3+/- pins

Also, do some of functional setting pins (such as EQx, PEx, Sxx and PWDN) have internal pull up/down resistor?

Thank you for your support in advance.

Regards,

Ken

tanaka-k@clv.macnica.co.jp

0 Gary Melchior over 11 years ago

The unused switch settings, unused inputs, and unused outputs may be left unconnected.

The functional pins do not have internal conditioning, so they must be controlled externally if the feature is needed.

Gary Melchior

0 Kenichiro over 11 years ago in reply to Gary Melchior

Hi Gary, Thanks again!

I will advice customer that unused pins (settings, inputs and outputs) can be loeft open.

Also, external pull-up/down may be needed.

Thanks,

Ken

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