TISP6L7591 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – DUAL FORWARD-CONDUCTING P-GATE THYRISTORS PROGRAMMABLE OVERVOLTAGE PROTECTORS

*RoHS ^{VCEOARMVSAPIOILLINAASBNLTE}
TISP6L7591
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
TISP6L7591 SLIC Protector
Rated for Standard Lightning Wave Shapes
D Package (Top View)
Wave Shape
Standard
I_PP
A
2/10
GR-1089-CORE ±80
10/700 ITU-T K.20 & K.21 ±40
10/1000 GR-1089-CORE ±30
TIP 1
V_S
2
NC 3
RING 4
8 PT
7 GND
6 GND
5 PR
MD6XAND
Rated for AC Fault Currents
AC Time I_TSM
Hz s A
0.01 ±5
50/60
1 ±3.5
Gate Trigger Current ............................................... 15 mA max.
Device Symbol
TIP (1)
V_S (2)
PT (8)
GND (7)
GND (6)
High V_S Voltage ......................................................... -80 V max.
High Holding Current ............................................. 150 mA min.
RING (4)
PR (5)
SD6XAEE
............................................ UL Recognized Components
Description
The TISP6L7591 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 TISP6L7591 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, V_S, in the region of -20 V to -80 V. The
protector gate is connected to this negative supply. This
references the protection (clipping) voltage to the negative supply
voltage. The negative protection voltage will then track the
negative supply voltage and the overvoltage stress on the SLIC is
minimized.
Pin Symbol Comment Pin Symbol Comment
Protected TIP
1
TIP Line-side TIP 8
PT
to SLIC
Supply voltage
2
V_S
to Gate
7 GND
Ground
3
NC
No Internal
6 GND
connection
Ground
4 RING Line-side RING 5
Protected RING
PR
to SLIC
Note: Pins 1 and 4 must always be connected to the protection
resistors shown in Figures 2 and 3 (Line Feed Circuitry).
The SLIC can be connected either to the protected
outputs (pins 5 and 8) or to the inputs (pins 1 and 4).
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 switch into a low voltage on-state
condition. As the overvoltage subsides the high holding current of TISP6L7591 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 TISP6L7591 is available in 8-pin plastic small-outline surface mount package.
How To Order
Device
Package
Carrier
For Standard
For Lead Free
Termination Finish Termination Finish
Order As
Order As
TISP6L7591 D (8-pin Small-Outline) R (Embossed Tape Reeled) TISP6L7591DR TISP6L7591DR-S
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
MAY 2002 - REVISED FEBRUARY 2005
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.