1. Features
• Working voltage: 2.2V~5.5V
• Low standby current
• Auto-calibration function
• Reliable touch button detection
• Auto switch standby/working mode
• Longest button output time detection
• With anti-voltage fluctuation function
• Level Hold, optional High effective or low effective
• NMOS output built-in pull-up resistor/CMOS direct output
• Support serial and parallel output
• External capacitor to adjust the sensitivity
• Few peripheral components

2. Overview
The BS81x series chips have 2 to 16 touch buttons, which can be used to detect the touch action of a human hand on an external touch button. The chips of this series have a high degree of integration, and only a few external components are needed to realize the detection of touch buttons.
The BS81x series provides serial and parallel output functions, which facilitate communication with external MCUs, and realize the purpose of device installation and touch pin monitoring. A special integrated circuit is used inside the chip, which has a high power supply voltage rejection ratio, which can reduce the occurrence of key detection errors. This feature ensures that the chip still has high reliability in applications with unfavorable environmental conditions.
This series of touch chips have automatic calibration function, low standby current, resistance to voltage fluctuations and other characteristics, providing a simple and effective implementation method for various touch button applications

3. Pin diagram

4. Pin description

5.Q1. What is your terms of packing?A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your MOQ?A:We provide you small MOQ for each item, it depends your specific order!
Q3. Do you test or check all your goods before delivery?A: Yes, we have 100% test and check all goods before delivery.
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