ISOW1412: use case of general purpose logic

Hi Ryoma,

Thanks for reaching out.

Table 10-5 table lists the truth table of the General Purpose Input/Output (GPIO) of ISOW1412, i.e., the channel with IN and OUT pin names. The table specifies the expected output logic level at OUT pin for given input state at IN pin. This table is similar to the one that is usually listed in digital isolator devices like ISO7741.

Ryoma Ohashi said:

Can the leave both 7pin(OUT) and 14pin(IN) open?

Please see below an FAQ that talks about this for logic channels, this is equally applicable to the GPIO in ISOW1412 as well. Thanks.

https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/732667/faq-can-unused-channel-pins-on-a-digital-isolator-be-left-floating

Regards,
Koteshwar Rao

Hi Ohashi,

Thanks for the follow-up question.

The GPIO is generally not required by most customers but a few customers use it for monitoring the status of supply or other components on the bus side. That seemed like the most common use we have seen but it is completely upto customer to use it for anything they need and not use it if they do not need.

Let me know if you have any further questions, thanks.

Regards,
Koteshwar Rao