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Single Chip Telephone IC

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Part number Pin to Pin Compatibility Function Features Package
IL2533DW AS2533 Multi-Standart CMOS Single Chip Telephone IC with Dual Soft Clipping
Line/speech circuit, LD/MF repertory dialler and tone ringer on one 28 pin CMOS chip
Operating range from 13 to 100 mA (down to 5mA with reduced performance)
Soft clipping to avoid harsh distortion
Volume control of receive signal
Line loss compensation selectable by pin option
Low noise (max. - 72 dBmp)
Real or complex impedance
NET 4 compatible.
LD/MF switchable dialling
Pacifier tone during programming
31 digit last number redial
Sliding cursor protocol with comparison
Pause key for access pause or wait function
3 flash keys, 100 ms, 280 ms and 375/600 ms
On chip MF filter (CEPT CS 203 compatible)
Ring frequency discrimination
3-tone melody generator
Oscillator Frequency (Resonator: Murata CSA 3.58MG312AM)-3.58MHz
4х4…4х8 Keyboard
SO-28
IL2533N AS2533 Multi-Standart CMOS Single Chip Telephone IC with Dual Soft Clipping
Line/speech circuit, LD/MF repertory dialler and tone ringer on one 28 pin CMOS chip
Operating range from 13 to 100 mA (down to 5mA with reduced performance)
Soft clipping to avoid harsh distortion
Volume control of receive signal
Line loss compensation selectable by pin option
Low noise (max. - 72 dBmp)
Real or complex impedance
NET 4 compatible.
LD/MF switchable dialling
Pacifier tone during programming
31 digit last number redial
Sliding cursor protocol with comparison
Pause key for access pause or wait function
3 flash keys, 100 ms, 280 ms and 375/600 ms
On chip MF filter (CEPT CS 203 compatible)
Ring frequency discrimination
3-tone melody generator
Oscillator Frequency (Resonator: Murata CSA 3.58MG312AM)-3.58MHz
4х4…4х8 Keyboard
DIP-28

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