TISP4070H3LM THRU TISP4095H3LM, TISP4125H3LM THRU TISP4220H3LM,

TISP4240H3LM THRU TISP4400H3LM

BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS

10

NOVEMBER 1997 - REVISED APRIL 1999

P R OD U C T

INF O RMA T ION

typical circuits

Figure 14. MODEM INTER-WIRE PROTECTION

Figure 15. PROTECTION MODULE

Figure 16. ISDN PROTECTION

Figure 17. LINE CARD RING/TEST PROTECTION

FUSE

TISP4350

OR

TISP4400

AI6XBM

RING DETECTOR

HOOK SWITCH

D.C. SINK

SIGNAL

MODEM

RING

WIRE

TIP

WIRE

R1a

R1b

RING

WIRE

TIP

WIRE

Th3

Th2

Th1

PROTECTED

EQUIPMENT

E.G. LINE CARD

AI6XBK

R1a

R1b

Th3

Th2

Th1

AI6XBL

SIGNAL

D.C.

TEST

RELAY

RING

RELAY

SLIC

RELAY

TEST

EQUIP-

MENT

RING

GENERATOR

S1a

S1b

R1a

R1b

RING

WIRE

TIP

WIRE

Th3

Th2

Th1

Th4

Th5

SLIC

SLIC

PROTECTION

RING/TEST

PROTECTION

OVER-

CURRENT

PROTECTION

S2a

S2b

S3a

S3b

V

BAT

C1

220 nF

AI6XBJ

TISP6xxxx,

TISPPBLx,

½TISP6NTP2