Standard 2-Touch Keys BS812A-1 Characteristics Touch Keys : BS812A-1 SOT23-6 Operating voltage : 2.2V ~ 5.5V Low standby current Auto-calibration Reliable touch detections High power supply rejection Standby and normal operating power modes Maximum key on duration time detection Power supply voltage drop rejection function 2 touch inputs 2 output - NMOS with internal pull-highs Level hold, low active Sensitivity adjustment using an external capacitor Minimal number of external components Applications Consumer Products, Home Appliances, Industrial Control, Health Care Products, etc. Application Circuit VDD KEY1 JP1 1 CR2032 BAT1 C1 1 2 OUT1 LED1 CT1 0~25p U1 104 3 VDD KEY1 VSS KEY2 Kout1 KOUT1 Kout2 KOUT2 6 KEY1 5 KEY2 1 4 OUT2 CT2 GND VDD OUT1 OUT2 4 3 2 1 KEY2 0~25p R1 BS812A-1 SOT23-6 R2 LED2 1K 1K VDD