ISO1540: The GPIO isolation

Zhang Liang

Genius 5325 points

Part Number: ISO1540
Other Parts Discussed in Thread: ISO1640

Hi,

We consider to use the ISO1540 for the GPIO isolation, so please kindly advise if this is available, thanks.

0 Vikas Jeevannavar over 3 years ago

Hi Zhang,

Please elaborate the requirements to suggest the correct part number. GPIO is bidirectional and hence, ISO1640 is the ideal solution for the use case. The customer has to make sure to meet the voltage threshold requirements.
Please refer to the (+) [FAQ] Why is the logic LOW level output voltage, VOL1, up to 0.8V on Side1 of the ISO1540/ISO1541 and ISO1640/ISO1641 bidirectional I2C isolators? .

Thanks

Vikas J

Isolation forum