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U3761MB-T Datasheet, PDF (1/27 Pages) ATMEL Corporation – Universal Telephone IC - All Functions Integrated | |||
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Features
Speech Circuit
⢠Adjustable DC Characteristic
⢠Symmetrical Input of Microphone Amplifier
⢠Receiving Amplifier for Dynamic or Piezo-electric Earpieces
⢠Automatic Line-loss Compensation
Dialer
⢠DTMF/Pulse Switchable
⢠Pulse Dialing 66/33 or 60/40 or DTMF Dialing Selectable by Pin
⢠Selectable Flashing Duration by Key Pad
⢠Pause Function
⢠Optical Indication of Temporary DTMF Mode
⢠Keytone for Pulse Dialing
⢠Last Number Redial up to 32 Digits
⢠Three by 17 Digits Direct (One-touch) Memory
⢠Ten by 17 Digits Indirect (Two-touch) Memory
⢠Notice Function up to 32 Digits
⢠Standard Low-cost Crystal 3.58 MHz or Ceramic Resonator
⢠Handset Mute (Privacy) with Optical Indication
⢠Additional Toggle Flipflop
⢠Internal Loop Interrupt Detection
Tone Ringer
⢠2-tone Ringer
⢠Adjustable Volume
⢠RC Oscillator
⢠Adjustable Threshold
Benefits
⢠Low Number of External Components
⢠High Quality through One IC Solution
Electrostatic sensitive device.
Observe precautions for handling.
Universal
Telephone IC -
All Functions
Integrated
U3761MB-T
Description
Atmelâs low-voltage telephone circuit U3761MB-T performs all the speech and line
interface functions required in an electronic telephone set, a tone ringer, a pulse and
DTMF dialing with redial, notice function, and 13 memories. Operation below 15 mA is
possible with reduced performance.
Rev. 4744AâCORDâ09/03
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