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MH88612B Datasheet(PDF) 1 Page - Zarlink Semiconductor Inc

Part # MH88612B
Description  Subscriber Line Interface Circuit (SLIC)
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Manufacturer  ZARLINK [Zarlink Semiconductor Inc]
Direct Link  http://www.zarlink.com
Logo ZARLINK - Zarlink Semiconductor Inc

MH88612B Datasheet(HTML) 1 Page - Zarlink Semiconductor Inc

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SEMICMF.019
1
Features
•
Transformerless 2-wire to 4-wire conversion
•
Battery and ringing feed to line
•
Off-hook and dial pulse detection.
•
Ring ground over-current protection
•
Adjustable constant current feed.
•
Relay driver
•
Power Denial
•
Wide Operating Range
Applications
Line interface for:
•
PABX
•
Intercoms
•
Key Telephone Systems
•
Control Systems
Description
The SLIC provides a complete interface between a
switching system and a subscriber loop. Functions
provided include battery feed and ringing feed to the
subscriber line, 2-Wire to 4-Wire hybrid interfacing,
constant current feed and dial pulse detection. The
device is fabricated using thick film hybrid technology
in a 20-pin single in-line package.
DS5752
Issue 1
May 2002
Ordering Information
MH88612BV-2
20 Pin SIL Package
0
°C to 70°C
MH88612B
Subscriber Line Interface Circuit (SLIC)
Data Sheet
Figure 1 - Block Diagram
Current and
Voltage
Sensing
Relay
Drive
Circuit
Constant
Current
Feed
Over Current
Protection
2-Wire to
4-Wire
Conversion
Loop
Supervision
Power
Management
TF
TIP
RING
RF
RV
VRLY
RC
RD
CD
LPGND
VBAT
PD VCC VEE AGND
VR
VX
CAP
SHK
VREF


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