CHIP DATA

Wide frequency range (0.01 Hz to 500 kHz)
Supply voltage: 5v typical
High stability of center frequency
Independently controllable bandwidth (up to 14pct)
High out-band signal and noise rejection
Logic-compatible output with 100mA current sinking capability
Inherent immunity to false signals
Frequency adjustment over a 20-to-1 range with an external resistor

Touch-Tone decoding
Carrier current remote controls
Ultrasonic controls (remote TV, etc.)
Communications paging
Frequency monitoring and control
Wireless intercom
Precision oscillator

The NE567 or SE567 is a Phase Locked Loop (PLL) Tone Decoder.
It is highly stable with synchronous AM lock detection and power output circuitry.
Its primary function is to drive a load whenever a sustained frequency within its detection band is present at the self-biased input.
The bandwidth center frequency and output delay are independently determined by means of four external components.