Datasheet > MH89625C-6

MH89625C-6

更新时间： 2024-09-25 03:49:27

品牌	Logo	应用领域
MITEL		电池电信集成电路光电二极管 PC
页数	文件大小	规格书
16页	137K
描述
OPS/DID PCM SLIC Preliminary Information

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MH89625C-6 数据手册

MH89625C

OPS/DID PCM SLIC

Preliminary Information

ISSUE 4

May 1995

Features

Ordering Information

•

Input impedance variants:

- 600Ω

- 200Ω + 680Ω // 0.1µF

- 200Ω + 560Ω // 0.1µF

Operates with a wide range of battery voltages

MH89625C

MH89625C- 5

MH89625C- 6

600Ω

200Ω + 680Ω // 0.1µF

200Ω + 560Ω // 0.1µF

•

Constant current battery feed with constant

voltage fallback for long loop drive capabilities

Overvoltage and short circuit protection

Off-hook detection and LED indicator drive

Dial pulse detection

Ring trip filter with auto ring trip

Ring relay driver plus three more uncommitted

relay drivers

40 Pin DIL Package

•

Description

The Mitel MH89625C SLIC (Subscriber Line

Interface Circuit) provides a complete interface

between an off-premise telephone line and a digital

switching system. All BORSCHT functions of Battery

Feed, Overvoltage Protection, Ringing Feed, Line

Supervision, Codec, 2-4 Wire Hybrid and Test are

provided requiring only a few external components.

The input impedance conforms with Chinese

standard requirements. The device is fabricated

using thick film hybrid technology which incorporates

various technologies for high voltage capability,

optimum circuit design and very high reliability.

•

Transformerless 2W to 4W conversion

A/D and D/A conversion

Conforms to A-Law PCM

Analog and digital loopback

Conforms to CCITT k.20 overvoltage surge

requirements with external primary protection

circuitry

Applications

•

Off premise digital PBX line cards

DID (Direct Inward Dial) line cards

PABX, Key Systems, Central Office Equipment

VBat

LGND

LCA

VREF

DSTi

Gain

Adjust

Tip

Drive

DSTo

DSTi

TIP

DSTo

CSTi

F1i

CODEC

SD0 SD1 SD2

2w/4w

hybrid

Current

F1i

SD3

Constant

Current &

Voltage

Control

& Voltage

Sensing

C2i

Impedance

Matching

Ring

Drive

RING

Ring

Trip

RF2

RF1

Filter

Relay

Driver 4

Relay

Driver 1

Relay

Driver 2

Relay

Driver 3

Line

Supervision

LED

RD2

RD3

RD4

SHK

RD1

Figure 1 - Functional Block Diagram

2-269

12 3 4 5 6 7...16

中文翻译

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