DS26LV31QML: unused channel

daejin kang

Part Number: DS26LV31QML

Dear High Reliability team.

This part has 4 channel. but I use only 3 channel.

Should unused channels (input and output) be connected to GND or VCC?

Otherwise, Can I leave they OPEN?

thankyou

+1 Clemens Ladisch 9 months ago

Guru 276440 points

Unused outputs can be left open.

Unused inputs must not be left floating; you should connect them to GND or V_CC.

0 daejin kang 9 months ago in reply to Clemens Ladisch

thank you for your answer.

I have an additional question.

What happens if unused input be left? the output of used channel occurs abnormal operating?

also, Can I place 10 Kohm pull-down resistor for unused input channel?

+1 Clemens Ladisch 9 months ago in reply to daejin kang

Guru 276440 points

Letting an input float will increase power consumption, and might damage the device; see [FAQ] How does a slow or floating input affect a CMOS device?

The size of the input series resistor does not matter; it might as well be 0 Ω. You need 10 kΩ only if you want to change the level during debugging.

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