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PDF TPI Data sheet ( Hoja de datos )
| Número de pieza | TPI | |
| Descripción | Tripolar protection | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TPI
Tripolar protection for ISDN interfaces
Features
■ Bidirectional triple crowbar protection
■ Peak pulse current:
IPP = 30 A , 10/1000 µs
■ Breakdown voltage:
– TPI80N: 80 V
– TPI120N: 120 V
■ Available in SO-8 package
■ Low dynamic breakover voltage:
– TPI8011N: 120 V
– TPI12011N: 170 V
Benefits
■ Low capacitance from lines to ground, allowing
high speed transmission without signal
attenuation
■ Good capacitance balance between lines to
ensure longitudinal balance
■ Fixed breakdown voltage in both common and
differential modes
■ The same surge current capability in both
common and differential modes
■ A particular attention has been given to the
internal wire bonding. The “4-point”
configuration ensures a reliable protection,
eliminating overvoltages introduced by the
parasitic inductances of the wiring (LdI/dt),
especially for very fast transient overvoltages
SO-8
Complies with following standards
■ CCITT K17-K20
– 10/700 µs, 1.5 kV
– 5/310 µs, 38 A
■ VDE 0433
– 10/700 µs, 2 kV
– 5/310 µs, 50 A
■ VDE 0878
– 1.2/50 µs, 1.5 kV
– 1/20 µs, 40 A
■ IEC 61000-4-2 level 4
– 0.5/700 µs, 1.5 kV
– 0.2/310 µs, 38 A
Description
Dedicated devices for ISDN interface and high
speed data telecom line protection. Equivalent to
a triple Trisil™ with low capacitance.
Figure 1. Functional diagram
Tip 1
GND 2
GND 3
Ring 4
8 Tip
7 GND
6 GND
5 Ring
TM: Trisil is a trademark of STMicroelectronics
November 2007
Rev 5
1/9
www.st.com
9
1 page  
TPI
2 Application information
Application information
Figure 7. Application circuit - U interface protection
R or PTC
A
TPIxx
GND
B R or PTC
Figure 8. Application circuit - S interface protection
A
TPIxx
B
R or PTC
GND
R or PTC
A
TPIxx
B
R or PTC
GND
R or PTC
This component uses an intemal structure resulting in symetrical characteristics with a good
balanced behaviour. Its topology ensures the same breakdown voltage level for positive and
negative surges in differential and common mode.
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TPI.PDF ] | |
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