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ISOW7841-Slide14

Although this presentation has been discussing the ISOW7841, there are other devices in this family. This slide shows the different configurations of the ISOW784x family. The naming convention is that ISOW stands for the isolated data and power. The number 78 stands for the TI’s isolator generation, the third digit is the total number of channels, and the fourth digit is the number of reverse channels. For example, an ISOW7840 has four forward channels and no reverse channels, while an ISOW7841 will have three forward channels and one reverse channel. All these devices are in the SOIC 16-pin package with the different pinouts shown in the slide. All these devices are available in fail safe high and fail safe low options. Fail safe is the output state of the device in any fault condition. The parts with the “F” in the naming convention imply fail safe low device, one that will default to a low state in case of a fault. The part without the “F” in the naming convention will default to a high state in the fault condition. Depending on the application and the circuitry that follows the isolators, the user may select a fail-safe high or low device.

PTM Published on: 2017-10-20