MH88615 Datasheet, PDF (1/6 Pages) Mitel Networks Corporation – ONS Subscriber Line Interface Circuit Advance Information

MH88615
®
ONS Subscriber Line Interface Circuit
Advance Information
Features
• ONS SLIC
• Variants
- 1 Germany
- 3 UK
- 7 North America
• Transformerless 2W to 4W conversion
• Battery Feed to line
• Off-Hook and dial pulse detection
• Tip and Ring ground over-current protection
• Power Denial
• Integral Ringing Amplifier
• Programmable Loop Current
• Wide V_BAT Operating Range
Applications
Line Interface for
• PABX
• Pair Gain Systems
• Satellite Communication Systems
• Key Telephone Systems
• Marine Systems
• Cordless Local Loop
ISSUE 1
April 1995
Ordering Information
MH88615-1
MH88615-3
MH88615-7
20 Pin SIL Package
20 Pin SIL Package
20 Pin SIL Package
0°C to 70°C
Description
The Mitel MH88615 ONS SLIC provides a complete
interface between a switching system and a
subscriber loop. The functions provided by the
MH88615 include battery feed and integral ringing
amplifier feed to the subscriber line, 2W to 4W
conversion current feed, off-hook and dial pulse
detection. The device is fabricated as a thick film
hybrid in a 20 pin single-in-line package.
PD
VBat
DCRI
RV
TIP
RING
Power Denial
Tip &
Ring
Drivers
Constant
Current Feed
Ringing Control
2-Wire to 4-Wire
Conversion
Loop
Supervision
RC
VR
VX
VRef
CAP
SHK
Figure 1 - Block Diagram
2-139