SMT BS814A-1 MSOP-10 4 Touch Key Chip Reliable touch detections IC
chip
Description
The BS81x is a series of 2~16 key touch key devices which can
detect human body contact using external touch pads. The high level
of device integration enable applications to be implemented with a
minimum number of external components. The BS81x series devices are
equipped with serial or parallel interfaces to allow easy
communication with an external MCU for device setup and for touch
pin monitoring purposes. Special internal circuitry is also
employed to ensure excellent power noise rejection to reduce the
possibility of false detections, increasing the touch switch
application reliability under adverse environmental conditions.
With auto-calibration, low standby current, excellent resistance to
voltage fluctuation and other features, this range of touch key
devices provide a simple and effective means of implementing touch
key operation in a wide variety of applications.
FEATURES and BENEFITS
• Operating voltage: 2.2V~5.5V
• Low standby current
• Auto-calibration
• Reliable touch detections
• Standby and normal operating modes
• Maximum key on duration time detection
• Adaptive voltage drop function
• Level Hold, selectable active level- low or high
• NMOS output with internal pull-high/CMOSDirect Output
• Both serial interface and parallel outputs
• Sensitivity adjustment using an external capacitor
• Minimal number of external components
BS812A-1/BS813A-1/BS814A-1/BS814A-2
BS816A-1/BS818A-2/BS8112A-3/BS8116A-3 Touch Key