Call Progress Tone Decoder and ABR Controller

Multi-Purpose Encoders, 30 Keys, PPM Code Method, Supply 2V - 3.6V Internal RC Oscillator

Multi-Purpose Encoders, Max. Active 32 keys PPM Code Method, Three Double-Active Keys 16-Bit Address Code, 8-Bit Data Code

2^12 Series of Encoders Operating Voltage 2.4V - 12V 8 Address Bits and 4 Data Bits

Low Power Real Time Clock and Calendar with EEPROM 4 Bytes, Integrated Oscillator Load Capacitors 12.5pF, I2C Serial Interface.