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https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/757531/faq-what-is-the-current-consumption-of-the-isolated-i2c-devices-iso1540-and-iso1541
隔离式 I2C 器件 ISO1540和 ISO1541的电流消耗是多少？
ISO154x 数据表中的表6.10电源电流特性中提供了 ISO1540和 ISO1541在没有任何上拉电阻器的情况下的电流消耗。 添加上拉电阻器时、将从电阻器汲取额外的电流。 例如、当 SDa2/SCL2上的上拉电阻为1kΩ Ω、而在 ISO154x 的 SDa1/SCL1上的上拉电阻为10kΩ Ω 且 VCC1 = VCC2 = 5V 时、上拉电阻器消耗的额外电流对于 SDa1/SCL1为~5mA、对于 SDa2/SCL2为~0.5mA。
