U3761MB-T
| Model | U3761MB-T |
| Description | Universal Telephone IC - All Functions Integrated |
| PDF file | Total 27 pages (File size: 335K) |
| Chip Manufacturer | ATMEL |
Features
Speech Circuit
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Adjustable DC Characteristic
Symmetrical Input of Microphone Amplifier
Receiving Amplifier for Dynamic or Piezo-electric Earpieces
Automatic Line-loss Compensation
Dialer
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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
Universal
Telephone IC -
All Functions
Integrated
U3761MB-T
Tone Ringer
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2-tone Ringer
Adjustable Volume
RC Oscillator
Adjustable Threshold
Benefits
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Low Number of External Components
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High Quality through One IC Solution
Electrostatic sensitive device.
Observe precautions for handling.
Description
Atmel’s 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. 4744A–CORD–09/03
Related PDFs
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|---|---|---|---|
 U3761MB-TFN
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Universal Telephone IC - All Functions Integrated | ATMEL | Preview |
|
U3761MB-TFNG3
|
Universal Telephone IC - All Functions Integrated | ATMEL | Preview |
