參數(shù)資料
型號: MH88620IN
廠商: Mitel Networks Corporation
英文描述: C.O. SLIC Preliminary Information
中文描述: 二氧化碳用戶接口的初步信息
文件頁數(shù): 1/14頁
文件大?。?/td> 147K
代理商: MH88620IN
2-159
Features
600 ohm input impedance
Externally selectable network balances
Transformerless 2-4 wire conversion
Programmable constant resistance feed
Off-hook and dial pulse detection
High immunity to externally induced longitudinal
currents
Auto ring trip
On-hook transmission (ANI) capability
Minimum protection circuitry required
Compatible with requirements of CDOT DOC/
FCC, CSA/UL,CCITT
Excellent power dissipation (SIL vertical
mounting)
Applications
On/Off-Premise PBX Line Cards
Central Office Line Cards
Description
The Mitel MH88620IN SLIC provides all of the
functions required to interface 2-wire off premise
subscriber loops to a serial TDM, PCM, switching
network of a modern PBX. The MH88620IN is
manufactured using thick film hybrid technology
which offers high voltage capability, reliability and
high density resulting in significant printed circuit
board area savings. A complete line card can be
implemented with very few external components.
Figure 3 - Functional Block Diagram
VBat
VDD
VEE
AGND
N1
N2
SHK
TRD
TF2
TF1
RING
TIP
RF2
RF1
LCA
LGND
TRC RGND
TX
GTX0
GTX1
RX
GRX0
GRX1
Z2
Z1
RRD
RNGC
VRLY
Matched
Feed
Resistors
Auto Ring
Trip
Test Relay
Driver
Driver
Circuitry
and
Speech
Circuit
Ring Relay
Driver
Loop
Current
Set
Switch-Hook
Threshold Set
Ring
Filter
Switch-Hook
Detect
2W/4W
conversion
Impedance
Network
Gain Adjust
ISSUE 3
April 1995
Ordering Information
MH88620IN 40 Pin SIL Package
0
°
C to 70
°
C
MH88620IN
C.O. SLIC
Preliminary Information
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