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请教隔离IC IS07221A可以用于USART和I2C吗？
您好，
IS07221A 可以用于UART中，
但是不能用于I2C，因为I2C的数字信号线有应答信号，需要是双向通信，下面链接是TI I2C 隔离产品，您可以从中选择：
https://www.ti.com.cn/zh-cn/isolation/isolated-interfaces/i2c/products.html#
好的，我们已经采用ISO1540方案。
