參數(shù)資料
型號: MH88500IN
廠商: Mitel Networks Corporation
英文描述: Hybrid Subscriber Line Interface Circuit (SLIC)(混合用戶線接口電路(SLIC)(在電話線和語音開關(guān)之間提供一個接口))
中文描述: 混合用戶線接口電路(SLIC)(混合用戶線接口電路電路(SLIC)(在電話線和語音開關(guān)之間提供一個接口))
文件頁數(shù): 1/11頁
文件大小: 64K
代理商: MH88500IN
2-63
Features
Differential to single ended conversion
No transformers required
Minimum installation space
Off-Hook detection and LED indicator drive
Relay drive output
Battery and ringing feed to line
Logic interface: MUTE, OFHK, RC
Mute of incoming audio
Dial pulse detection
Voltage surge protection
Applications
Line Interface for:
PABX
Intercoms
Key Systems
Description
The Mitel MH88500IN Subscriber Line Interface
Circuit provides a complete interface between the
telephone line and a speech switch requiring only
single bidirectional switch per crosspoint. The
functions provided by the MH88500IN include
bidirectional differential to single ended conversion in
the speech path, line battery feed, ringing feed and
loop and dial pulse detection. The device is
fabricated as a thick film hybrid in a 20-pin ‘single-in-
line’ package allowing optimum circuit board packing
density.
Figure 1 - Functional Block Diagram
JUNCTOR
MUTE
OFHK
LED
THRESH ADJ
V
C2
V
A2
V
B
V
C1
GND
VA
1
TIP
RING
RING
FEED
CD
RD
RC
RGND
V
A2
V
B
Speech Circuit
Loop Detection
Loop Feed/
Ring Feed
Relay Drive
Circuit
ISSUE 1
April 1995
Ordering Information
MH88500IN
20 Pin SIL Package
0
°
C to 70
°
C
MH88500IN
Hybrid Subscriber Line Interface Circuit (SLIC)
Preliminary Information
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