TEW4855 Datasheet, PDF (1/1 Pages) Filtran LTD – ISDN U-BUS Input/Output Transformer

ISDN
U-BUS Input/Output Transformer
TEW4855
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.
MECHANICAL
DOT AT
PIN #1
6
DEVICE
7
1
2
LINE
3
4
DIMENSIONS, Inches (mm)
P/N
LWH 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)
ELECTRICAL
Line Impedance
Inductance
Leakage Inductance
(1-4)
(6-7)
Distributed Capacitance
Winding Resistance
Turns Ratio
Longitudinal Balance
DC Capability (Line Side)
Dielectric Strength
(1-2)+(3-4)
(1-2)+(3-4)
(6-7)
(6-7) : (1-2)+(3-4)
1 - 4 KHz
4 - 160 KHz
135 Ω
11.0 mH
< 75 µH
< 500 pF
< 3.3 Ω
< 3.0 Ω
1 : 1.3
> 60 dB
> 55 dB
50 mA
4000 V rms
short (6-7)
100 mA without damage
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3
Tel : [phone] Fax : [phone]
4-11