MH88612BV-4K View Datasheet(PDF) - Mitel Networks

Part Name

Description

View to exact match

MH88612BV-4K

Subscriber Line Interface Circuit (SLIC)

Mitel Networks 

MH88612BV-K

Subscriber Line Interface Circuit (SLIC)

Advance Information

Features

DS5066

ISSUE 2

January 1999

• Transformerless 2-wire to 4-wire conversion

• Battery and ringing feed to line.

• Off-hook and dial pulse detection.

.

• Ring ground over-current protection.

• Constant current feed with constant voltage

foldover.

• Relay driver.

• Power Denial.

• Wide Operating Range.

• Pin for pin compatible 600R and 900R variants.

Applications

Line interface for:

• PABX

• Intercoms

• Key Telephone Systems

• Control Systems

Ordering Information

MH88612BV-K

MH88612BV-4K

20 Pin SIL Package (600R)

20 Pin SIL Package (900R)

0°C to 70°C

Description

The SLIC provides a complete interface between a

switching system and a subscriber loop. Functions

provided include battery feed and ringing feed to the

subscriber line, 2-Wire to 4-Wire hybrid interfacing,

constant current feed with constant voltage foldback,

and dial pulse detection. The device is fabricated

using thick film hybrid technology in a 20-pin single

in-line package.

TF

TIP

RING

RF

RV

VRLY

RC

RD

CD

Constant

Voltage

Foldback

LPGND

VBAT PD VCC VEE AGND

Power

Management

Current and

Voltage

Sensing

2-Wire to

4-Wire

Conversion

Relay

Drive

Circuit

Constant

Current

Feed

Over Current

Protection

Loop

Supervision

SHK

Figure 1 - Functional Block Diagram

VR

VX

CAP

1

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