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Analog Devices Digital Isolators: ADuM121N has 2 circuits, how do I handle unused pins when only 1 circuit is used?
In general, please refer to the following content for unused pin handling.
1. Input-only pin: fixed (pull-up/pull-down/power connection/ground connection)
2. Output-only terminal: open
3. I/O pin: Set to input pin and fixed (pull-up/pull-down), or set to output and open
I think there is no problem with pin 3 of the logic input being fixed and pin 6 of the logic output being open.
Finally, please check the characteristics with the actual device just in case.
(Published in March 2022)
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