BS804B key equivalent, (bs801b - bs808b) touch key.
* Operating voltage: 2.2V~5.5V
* Ultra low standby current: 1.5mA at 3V
* Auto-calibration
* High reliability touch detections
* High PSRR
* Outpu.
to be implemented with a minimum number of external components. The BS804B and BS808B are equipped with a One-line seria.
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