TEW4914 Datasheet, PDF (1/1 Pages) Filtran LTD – ISDN U-BUS Input/Output Transformer

ISDN
U-BUS Input/Output Transformer
TEW4914 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.
TEW4914 & -1 meet the electri-
cal requirements for the
MOTOROLA MC145472 de-
vice.
Applications:
• Low profile construction.
• Up to 50 mA line current.
• TEW4914-1 is certified to
EN60950 and EN41003.
TEW4914
MECHANICAL
DOT AT
PIN #1
ELECTRICAL
Line Impedance
Inductance
Leakage Inductance
Winding Resistance
Turns Ratio
Longitudinal Balance
DC Capability (Line Side)
Dielectric Strength
(1-4)
(6-7)
(1-2) & (3-4)
(6-7)
(6-7) : (1-4)
1 - 4 KHz
4 - 160 KHz
(1-4)
6
DEVICE
7
1
2
LINE
3
4
DIMENSIONS, Inches (mm)
P/N
LWH A B C
S
TEW4914 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)
TEW4914
135 Ω
> 25 mH
< 20 µH
3.8 Ω
2.9 Ω
1:2
> 60 dB
> 55 dB
25 mA
1500 V rms
TEW4914-1
135 Ω
> 25 mH
< 20 µH
4.9 Ω
3.3 Ω
1:2
> 60 dB
> 55 dB
50 mA
4000 V rms
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3
Tel : [phone] Fax : [phone]
4-13