TISP61089S

DUAL FORWARD-CONDUCTING P-GATE THYRISTORS

PROGRAMMABLE OVERVOLTAGE PROTECTORS

PR O D UC T

I N FO R M A T IO N

1

JULY 1999

Copyright © 1999, Power Innovations Limited, UK

Information is current as of publication date. Products conform to specifications in accordance

with the terms of Power Innovations standard warranty. Production processing does not

necessarily include testing of all parameters.

PROGRAMMABLE SLIC OVERVOLTAGE PROTECTION FOR LSSGR ‘1089

q

Dual Voltage-Programmable Protectors

- Wide 0 to -85 V Programming Range

- Low 5 mA max. Gate Triggering Current

- High 150 mA min. Holding Current

q

Rated for LSSGR ‘1089 Conditions

q

2/10 Protection Voltage Specified

q

Also Rated for ITU-T 10/700 impulses

q

Small Outline Surface Mount Package

- Available Ordering Options

WAVE SHAPE

‘1089 TEST CLAUSE

AND TEST #

A

2/10 µs

4.5.8 Second-Level 1

120

10/1000 µs

4.5.7 First-Level 3

30

60 Hz POWER

FAULT TIME

‘1089 TEST CLAUSE

AND TEST #

A

100 ms

4.5.13 Second-Level 2

11

1 s

4.5.13 Second-Level 2

4.5

5 s

4.5.13 Second-Level 2

2.4

300 s

4.5.13 Second-Level 1

0.95

900 s

4.5.13 Second-Level 1

0.93

ELEMENT

FIRST-LEVEL

V @ 56 A

SECOND-LEVEL

V @ 100 A

Diode

6

8

Crowbar

-57

-60

CARRIER

ORDER #

Tube

TISP61089SD

Taped and reeled

TISP61089SDR

q

Single-Lead Line Connection Version of

Feed-Through TISP61089D

- Ground Lead Creepage Distance . . > 3 mm

description

The TISP61089S is a dual forward-conducting buffered p-gate overvoltage protector. It is designed to protect

monolithic SLICs (Subscriber Line Interface Circuits) against overvoltages on the telephone line caused by

lightning, a.c. power contact and induction. The TISP61089S limits voltages that exceed the SLIC supply rail

voltage. The TISP61089S parameters are specified to allow equipment compliance with Bellcore GR-1089-

CORE, Issue 1.

The SLIC line driver section is typically powered from 0 V (ground) and a negative voltage in the region of

-10 V to -75 V. The protector gate is connected to this negative supply. This references the protection

(clipping) voltage to the negative supply voltage. As the protection voltage will then track the negative supply

voltage the overvoltage stress on the SLIC is minimised.

Positive overvoltages are clipped to ground by diode forward conduction. Negative overvoltages are initially

clipped close to the SLIC negative supply rail value. If sufficient current is available from the overvoltage, then

device symbol

K1

K2

A

A

G1,G2

Terminals K1, K2 and A correspond to the alternative

line designators of T, R and G or A, B and C. The

negative protection voltage is controlled by the

voltage, V

SD6XAP

MD6XBA

D PACKAGE

(TOP VIEW)

NC - No internal connection

Terminal typical application names shown in

parenthesis

1

2

3

4

5

6

7

8

A

A

G

K1

K2

NC

(Ground)

(Ground)

(Gate)

(Tip)

(Ring)

NC

NC