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U3761MB

Features: Speech Circuit· Adjustable DC characteristic· Symmetrical input of microphone amplifier· Receiving amplifier for dynamic or piezo-electric earpieces· Automatic line loss compensationDialer· DTMF / pulse switchable· Pulse dialling 66/33 or 60/40 or DTMF dialling selectable by pin· Selecta...

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SeekIC No. : 004534820 Detail

U3761MB: Features: Speech Circuit· Adjustable DC characteristic· Symmetrical input of microphone amplifier· Receiving amplifier for dynamic or piezo-electric earpieces· Automatic line loss compensationDialer...

U3761MB Data Sheet

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Part Number:
U3761MB
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/27

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Product Details

Description



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 dialling 66/33 or 60/40 or DTMF dialling selectable by pin
· Selectable flashing duration by key pad
· Pause function
· Last number redial up to 32 digits
· Three by 32 digits direct (one touch) memory
· Ten by 16 digits indirect (two touch) memory
· Notice function up to 32 digits
· Standard low-cost crystal 3.57 MHz or ceramic resonator

Tone Ringer
· 2 Tone ringer
· Adjustable volume
· RC oscillator
· Adjustable threshold


Pinout

Connection Diagram


Specifications

Parameters
Symbol
Value
Unit
Line current
IL
140
mA
DC line voltage
VL
14
V
Junction temperature
Tj
+125
°C
Ambient temperature
Tamb
25 to +75
°C
Storage temperature
Tstg
55 to +150
°C
Total power dissipation, Tamb = 60°C SSO44
SDIP40
Ptot
0.9
W
Ptot
1.3
W
Junction ambient SSO44
SDIP40
RthJA
70
K/W
RthJA
50
K/W



Description

TEMIC's low voltage telephone circuit, U3761MB performs all the speech and line interface functionsrequired in an electronic telephone set, the tone ringer, the pulse and DTMF dialing with redial, notice function, and 13 memories.




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