INTRODUCTION
The KA567 is monolithic phase locked loop system designed to provide a saturated transistor switch to GND, when an input signal is present whitin the passband. External components are used to independently set center frequency bandwidth and output delay.

APPLICATIONS
• Touch Tone Decoder.
• Wireless Intercom.
• Communications paging decoders.
• Frequency monitoring and control.
• Ultrasonic controls. (remote TV etc.)
• Carrier current remote controls.
• Precision oscillator.