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U3761MB-AFNG3 Datasheet(PDF) 7 Page - TEMIC Semiconductors

Part # U3761MB-AFNG3
Description  Low Voltage Standard Telephone Circuit with 13 Memories
Download  23 Pages
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Manufacturer  TEMIC [TEMIC Semiconductors]
Direct Link  http://www.temic.de
Logo TEMIC - TEMIC Semiconductors

U3761MB-AFNG3 Datasheet(HTML) 7 Page - TEMIC Semiconductors

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U3761MB
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 23-Apr-97
7 (23)
Function
Configuration
Symbol
SSO44
SDIP40
23
25
PRIVACY
PRIVACY
0.6V
VI
PD
6V
6V
40K
Input for handset mute
24
26
ST
ST
PD
16V
The output of the sidetone
cancellation signal, which requires
a balanced impedance of 8 to
10 times the subscribers line
impedance to be connected to
Pin VL.
25
27
THA
THA
VRIAC
1V
PD
6V
6V
12K
20K
140K
Ringer threshold adjustment
26
28
AGC
RDC
AGC
VL
PD
PD
The range of transmit and receive
gain variations between short and
long loops may be adjusted by
connecting a resistor RAGC from
this pin to (GND). This pin can be
left open to set AGC out of action.
27
29
VRIAC
VRIAC
PD
50V
70K
10K
Ringing supply
28
30
VRING
OUT
VRING
PD
PD
30V
50V
200
6.5K
DC supply voltage for the tone
ringer is limited to 30 V with
integrated Z-diode.
29
31
RCK
3.4V
0.8V
RCK
PD
6V
6V
RC clock oscillator for ringer


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