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Key Features

- Line/speech handsfree circuit, LD/MF repertory dialler, and tone ringer on one 44 pin CMOS chip

- Operating range from 15 to 100 mA line current (down to 5 mA with slightly reduced performance)

- All significant parameters programmable with external EEPROM

- Volume control of receiver signal

- Handsfree function with enhanced voice switching

- Low noise (max. -72 dBmp)

- Unique EMC performance

- LD/MF switchable dialing with temporary MF mode

- Repertory dialing with last number redial and memory dialing (8 x 2 direct and 12 indirect)

- Call restriction with PIN code

- Serial interface for EEPROM and LCD driver

- 2-tone/3-tone ringer with ring frequency detection