TISP61089A Bourns, Inc., TISP61089A Datasheet - Page 7

• Manufacturer Part Number: TISP61089A
• Description: Dual Forward-conducting P-gate Thyristors Programmable Overvoltage Protectors
• Manufacturer: Bourns, Inc.

protector. The TISP7xxxF3 protector has the same protection voltage for any terminal pair. This protector is used when the ring generator
configuration may be ground or battery-backed. For dedicated ground-backed ringing generators, the TISP3xxxF3 gives better protection as
its inter-conductor protection voltage is twice the conductor to ground value.
Relay contacts 3a and 3b connect the line conductors to the SLIC via the ’61089 protector. The protector gate reference voltage comes from
the SLIC negative supply (V
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
NOVEMBER 1995 - REVISED JULY 2008
Application Circuit (Continued)
WIRE
WIRE
RING
TIP
TISP61089 Gated Protector Series
Figure 4. Negative Overvoltage Condition
PROTEC TION
CURRENT
OVER-
RSa
RSb
I
K
BAT
PROTEC TOR
). A 220 nF gate capacitor sources the high gate current pulses caused by fast rising impulses.
'61089
SLIC
220 nF
Th3
PROTEC TION
C1
RING/TEST
Th5
3xxxF3
7xxxF3
TISP
OR
I
G
Th2
Th1
V
SLIC
AI6XAHC
BAT
APPLICATIONS INFORMATION
Figure 6. Typical Application Circuit
EQUIP-
RELAY
S1a
MENT
TEST
TEST
S1b
S2b
GENERATOR
Figure 5. Positive Overvoltage Condition
RING
RELAY
RING
S2a
I
RELAY
F
SLIC
S3a
S3b
PROTEC TOR
'61089
SLIC
220 nF
C1
Th5
PROTEC TOR
'61089
220 nF
SLIC
C1
Th4
Th5
V
SLIC
AI6XAIC
BAT
V
SLIC
AI6XAJC
BAT