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TEW4855 Datasheet(PDF) 1 Page - Filtran LTD

Part No. TEW4855
Description  ISDN U-BUS Input/Output Transformer
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Maker  FILTRAN [Filtran LTD]
Homepage  http://www.filtran.com
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TEW4855 Datasheet(HTML) 1 Page - Filtran LTD

   
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TEW4855 is designed to inter-
face with the subscribers prem-
ises (NT) and the 2- wire line
side of the Central Office Equip-
ment (LT) in the ISDN Network.
TEW4855 meets the electrical
specifications of ANSI TI.601-
1988 and is approved for the
Mitel MT8910 DSLIC device.
Exceeds the requirements of:
EN60950 and EN41003
Applications:
High performance 2B1Q line
code.
Up to 50 mA line current.
High insulation between line
and equipment side.
Line Impedance
135
Inductance
(1-4)
11.0 mH
Leakage Inductance
(6-7)
< 75
µH
short (6-7)
Distributed Capacitance
(1-2)+(3-4)
< 500 pF
Winding Resistance
(1-2)+(3-4)
< 3.3
(6-7)
< 3.0
Turns Ratio
(6-7) : (1-2)+(3-4)
1 : 1.3
Longitudinal Balance
1 - 4 KHz
> 60 dB
4 - 160 KHz
> 55 dB
DC Capability (Line Side)
50 mA
100 mA without damage
Dielectric Strength
4000 V rms
P/N
L
W
H
A
B
C
S
TEW4855
0.87 0.83 0.63 0.60 0.20 0.12
0.025
(22.0) (21.0) (16.0) (15.3) (5.1) (3.0)
(0.64)
DIMENSIONS, Inches (mm)
DOT AT
PIN #1
6
7
1
2
3
4
LINE
DEVICE
ISDN
U-BUS Input/Output Transformer
TEW4855
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3
4-11
Tel : (613) 226-1626 Fax : (613) 226-7124
MECHANICAL
ELECTRICAL


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