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參數資料
| 型號： | MH88400 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Line Interface Circuit Preliminary Information |
| 中文描述： | 線路接口電路的初步信息 |
| 文件頁數： | 1/10頁 |
| 文件大?。?/td> | 120K |
| 代理商： | MH88400 |
2-11
Features
FAX and Modem interface
Suitable for V.29 FAX & V.22 bis Data
Allows caller identification
Variants match German, UK, 600
& 900
network impedances
Isolation circuitry conforms to international PTT
requirements
Transformerless 2-4 Wire conversion
Loop start operation
Pulse and DTMF operation
Accommodates external monitor phone
Line state detection outputs:
-loop current/ringing outputs
-monitor phone switch hook
Single +5V operation
Applications
Interface to Central Office for:
DAA
Modem
FAX
Answering Machine
Terminal Equipment
Description
The Mitel MH88400 Line Interface Circuit provides a
complete audio and signalling link between audio
equipment and central office. The functions provided
by the MH88400 include 2-4 Wire conversion, loop
seizure, external monitor phone switch hook status
and ringing voltage and loop current detection. The
device is fabricated as a thick film hybrid which
incorporates various technologies for optimum circuit
design, high voltage isolation and very high
reliability.
Variants are provided to meet German (-1) and UK
(-3) and general 600
(-2) line impedance (see
section on Line Impedances).
Ordering Information
MH88400-1
14 Pin DIL Package
MH88400-2
14 Pin DIL Package
MH88400-3
14 Pin DIL Package
0
°
C to 70
°
C
Power
Supply
Opto-
Isolation
Logic Input
Buffer
Opto-
Isolation
Opto-
Isolation
Audio
Buffer
Audio
Buffer
Ring &
Buffer
Active
Termination
Audio Input
Buffer
Input
Buffer
Isolation Barrier
VDD
AGND
LC
VR
VX
RVLC
TIP
RING
TXIN
TF
RLS
USER CONNECTIONS
NETWORK CONNECTIONS
Opto-
Isolation
PHS
SHK
Switch Hook
Buffer
Opto-
Isolation
Transformer
Isolation
Loop
Figure 1 - Functional Block Diagram
MH88400
Line Interface Circuit
Preliminary Information
ISSUE 1
April 1995
相關PDF資料 |
PDF描述 |
|---|---|
| MH88400-1 | Line Interface Circuit Preliminary Information |
| MH88400-2 | Line Interface Circuit Preliminary Information |
| MH88400-3 | Line Interface Circuit Preliminary Information |
| MH88500IN | 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之間提供一個接口）) |
| MH88500 | 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之間提供一個接口）) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MH88400-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Line Interface Circuit Preliminary Information |
| MH88400-2 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Line Interface Circuit Preliminary Information |
| MH88400-3 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Line Interface Circuit Preliminary Information |
| MH88422 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Line Interface Circuit Preliminary Information |
| MH88422-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Line Interface Circuit Preliminary Information |
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