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廬

LCDP1511D

DUAL LINE PROGRAMMABLE TRANSIENT

VOLTAGE SUPPRESSOR FOR SLIC PROTECTION

Application Specific Discretes

A.S.D.

TM

FEATURES

Dualline programmable transient suppressor

Wide negative firing voltage range : V

MGL

= -80V

Low dynamic switching voltages : V

FP

and V

DGL

Low gate triggering current : I

GT

= 5mA max

Peak pulse current : I

PP

= 15 A (10/1000

碌s)

Holding current : I

H

> 150 mA

DESCRIPTION

The LCDP1511D is a dual line protector which pro-

tects subscriber line interface circuits (SLIC)

against transient overvoltages.

Positive overvoltages are clamped with diodes to-

wards GND, while negative overvoltages are sup-

pressed by thyristors connected to GND. The

breakdown voltage of the thyristors is determined

by the voltage applied to the gate, generally -V

bat

.

SO8

FUNCTIONAL DIAGRAM

TIP 1

1

8

RING 1

GATE

2

7

GND

GATE

3

6

GND

TIP 2

4

5

RING 2

COMPLIES WITH THE

FOLLOWING STANDARDS:

ITU-T K20

VDE0433

VDE0878

IEC1000-4-5

FCC Part 68

BELLCORE NWT-001089-CORE

Peak Surge

Voltage

(V)

1000

2000

1500

level 2

level 2

1500

800

2500

1000

Voltage

Waveform

(碌s)

10/700

10/700

1.2/50

10/700

1.2/50

10/160

10/560

2/10

10/1000

Current

Waveform

(碌s)

5/310

5/310

1/20

5/310

8/20

10/160

10/560

2/10

10/1000

Admissible

Ipp

(A)

25

25

40

25

25

30

20

70

15

Necessary

Resistor

(鈩?

-

40

-

-

-

-

5

25

45

1/6

September 1999 - Ed:2A

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