JULY 1995 — REVISED MARCH 2006

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

TISP61511D Gated Protectors

TISP61511D

DUAL FORWARD-CONDUCTING P-GATE THYRISTORS

PROGRAMMABLE OVERVOLTAGE PROTECTORS

Device Symbol

Dual Voltage-Programmable Protectors.

– Wide 0 to -80 V Programming Range

– Low 5 mA max. Triggering Current

– High 150 mA min. Holding Current

Rated for International Surge Wave Shapes

D Package (Top View)

Description

The TISP61511D is a dual forward-conducting buffered p-gate over-

voltage protector. It is designed to protect monolithic Subscriber Line

Interface Circuits, SLICs, against overvoltages on the telephone line

caused by lightning, ac power contact and induction. The TISP61511D

limits voltages that exceed the SLIC supply rail voltage.

The SLIC line driver section is typically powered from 0 V (ground)

and a negative voltage in the region of -10 V to -70 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 track the negative supply voltage the overvoltage

stress on the SLIC is minimized.

Voltage Wave

Shape

Standard

A

2/10 µs

TR-NWT-001089

170

1.2/50 µs

ETS 300 047-1

90

0.5/700 µs

RLM88/I3124

40

10/700 µs

K17, K20, K21

40

10/1000 µs

TR-NWT-001089

30

Functional Replacements for

.............................................. UL Recognized Component

MD6XANB

NC - No internal connection

Terminal typical application names shown in

parenthesis

1

2

3

4

5

6

7

8

K1

A

A

K2

G

K1

K2

NC

(Tip)

(Ground)

(Ground)

(Ring)

(Gate)

(Tip)

(Ring)

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

SD6XAE

A

K1

G

K2

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 the protector will crowbar into a low voltage on-state condition. As

the current subsides the high holding current of the crowbar prevents d.c. latchup.

These monolithic protection devices are fabricated in ion-implanted planar vertical power structures for high reliability and in normal system

operation they are virtually transparent. The buffered gate design reduces the loading on the SLIC supply during overvoltages caused by

power cross and induction.

*RoHS Directive 2002/95/EC Jan 27 2003 including Annex

Device Type

Package

Type

LCP1511,

LCP1511D,

ATTL7591AS,

MGSS150-1

8-pin

Small-

Outline

TISP61511D

or TISP61511DR

for Taped and

Reeled

TISP61511D-S

or TISP61511DR-S

for Taped and

Reeled

Functional

Replacement

With Standard

Termination Finish

Order As

Functional

Replacement

With Lead Free

Termination Finish

Order As