MH88524 데이터 시트보기 (PDF) - Mitel Networks

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MH88524

Dual 2-4 Wire Circuit

Mitel Networks 

MH88524

®

Dual 2-4 Wire Circuit

Preliminary Information

Features

• Full duplex operation

• Two complete circuits per package

• Transformerless 2-4 Wire (4-2 Wire) conversion

• + 5V operation

• Wide bandwidth (50kHz)

• Small Package Size

Applications

4-2 Wire and 2-4 Wire conversion for:

• MH88630/631, MH88632, MH88500 & MT8840

• PBX

• Key Telephone System

• Channel bank

• Voice Mail

• Terminal Equipment

• Digital Loop Carrier

• Modem

• Intercom

ISSUE 4

April 1995

Ordering Information

MH88524

10 Pin SIL Package

0°C to 70°C

Description

The Mitel MH88524 (Dual 2-4 wire Circuit) provides

two independent interfaces between4-Wire devices

such as the MH88631 COIC (Central Office Interface

CIrcuit) and a speech switch such as the MT8814

(Analog Switch Array), requiring only a single

bidirectional switch per crosspoint. The MH88524

can accommodate two full duplex audio links. The

device is fabricated as a thick film hybrid which

incorporates various technologies for optimum circuit

design and very high reliability.

RX1

TX1

RX2

TX2

Receive Gain

Circuit1

Transmit Gain

Circuit 1

Receive Gain

Circuit 2

Transmit Gain

Circuit 2

2-4 Wire

Circuit 1

2-4 Wire

Circuit 2

VDD VEE AGND

Figure 1 - Functional Block Diagram

JUN1

JUN2

2-73

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