Uc =3.0 6.5 V
Icc=5.0 mA
Improved Attenuator Gain Range: 52 dB Between

Transmit and Receive
Low Voltage Operation for Line-Powered Applications

(3.0-6.5 V)
4-Point Signal Sensing for Improved Sensitivity Background Noise Monitors for Both Transmit and

Receive Paths
Microphone Amplifier Gain Set by External Resistors –

Mute Function Included
Chip Disable for Active/Standby Operation
On Board Filter Pinned-Out for User Defined Function Dial Tone Detector to Inhibit Receive Idle Mode During

Dial Tone Presence
Standard 28-Pin Plastic Dip Package and SOIC

Package Available