Datasheet > MH88632B

MH88632B

更新时间： 2024-09-23 22:46:15

品牌	Logo	应用领域
MITEL		/
页数	文件大小	规格书
17页	98K
描述
Central Office Interface Circuit Preliminary Information

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MH88632B 数据手册

MH88632B

Central Ofﬁce Interface Circuit

Preliminary Information

ISSUE 3

September 1997

Features

•

Supports Loop Start and Ground Start protocols

Ordering Information

2-4 Wire conversion

Programmable Input Impedance, Network

Balance Impedance and gains

MH88632B 40 Pin SIL Package

MH88632BT 40 Pin 90˚ Package

0°C to 70°C

•

Three relay drivers

Line state detection outputs

15mA operation allowing long line length

capability

Description

•

On-hook reception for Caller Line Identiﬁcation

Meets FCC Part 68 Leakage Current

Requirements

The Mitel MH88632B Central Ofﬁce Interface Circuit

provides a complete analog and signalling link

between audio switching equipment and a subscriber

line. The device is available in a single in line

package for high packing densities or in a 90˚

package for reduced card clearance.

Applications

Interface to Central Ofﬁce telephone line for

•

PBX

Key Telephone System

Terminal Equipment

Digital Loop Carrier

Wireless Local Loop

The device is fabricated using thick ﬁlm hybrid

technology for optimum circuit design and very high

reliability.

RV FL RL RG TG

VCC

VEE

AGND

GRD GRC BRD BRC LRD LRC

Status

VRLY

Detection

Relay Driver Circuit

RGND

RING

GRX1

GRX0

Receive

Gain

Line

Dummy

Ringer

2-4 Wire

Hybrid

Termination

Transmit

Gain

GTX1

GTX0

TIP

Network

Balance

Impedance

Matching

XLA XLB XLC XLD

Z1 Z2 Z600 Z900

NS N1 N2 NATT

Figure 1 - Functional Block Diagram

2-239

12 3 4 5 6 7...17

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