CTCSS Encoder/Decoder with Voice Signal Circuit

Continuous Tone Controlled Squelch System (CTCSS) Encoder/Decoder
Can be programmed with up to 50 frequencies
Built-in high speed tone decoder (Typ. : 150ms@67Hz)
Integrated voice signal circuits such as limiter, splatter filter, etc.
Built-in tone signal elimination filter
Built-in (3.6864 MHz or 4.194304 MHz) oscillator circuit with crystal oscillator
Low voltage operation: 1.8 V to 5.5 V
24-pin VSOP package