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QT140 series datasheets. Manufacturer: QRG.

QT140-AS0.5-7.0V; 20mA; 4 and 5 key QTouch sensor IC. For industrial panels, security systems, access systems, pointing devices, PC peripherals, backlighted buttons in 28-pin SSOP package. Operational temperature range from -40°C to 105°C.Datasheet*)
QT140-D0.5-7.0V; 20mA; 4 and 5 key QTouch sensor IC. For industrial panels, security systems, access systems, pointing devices, PC peripherals, backlighted buttons in 28-pin DIP package. Operational temperature range from 0°C to 70°C.Datasheet*)
QT150-AS0.5-7.0V; 20mA; 4 and 5 key QTouch sensor IC. For industrial panels, security systems, access systems, pointing devices, PC peripherals, backlighted buttons in 28-pin SSOP package. Operational temperature range from -40°C to 105°C.Datasheet*)
QT150-D0.5-7.0V; 20mA; 4 and 5 key QTouch sensor IC. For industrial panels, security systems, access systems, pointing devices, PC peripherals, backlighted buttons in 28-pin DIP package. Operational temperature range from 0°C to 70°C.Datasheet*)
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