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| TCM1030_99 Datasheet, PDF (5/6 Pages) Texas Instruments – DUAL TRANSIENT-VOLTAGE SUPPRESSORS | |||
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TCM1030, TCM1060
DUAL TRANSIENT-VOLTAGE SUPPRESSORS
APPLICATION INFORMATION
SCTS040A â JUNE 1989 â REVISED MAY 1996
Line short-circuits to external power sources can damage the suppressor due to excessive power dissipation.
Conventional protection techniques, such as fuses or PTC (positive temperature coefficient) thermistors, should
be used to eliminate or reduce the fault current.
Control
Recieve
Voice
Transmit
Voice
T
Subscriber Line TP
Interface Circuit
(SLIC)
RP
VBAT
GND R
48 V
1 TIP
TIP 8
2
VS
TCM1030, GND 7
TCM1060
6
GND
4
RING
5
RING
TIP
RP (see Note A)
RP (see Note A)
RING
0.47 µF
(see Note B)
0.1 µF
(see Note C)
NOTES: A. RP is 100 ⦠minimum for TCM1030 and 50 ⦠minimum for TCM1060.
B. 0.47 µF, 100 V stacked film metalized plastic capacitor
C. 0.1 µF, 100 V ceramic capacitor
Figure 2. Typical Line-Card Application Circuit
⢠POST OFFICE BOX 655303 DALLAS, TEXAS 75265
5
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