TEW4974 Datasheet, PDF (1/1 Pages) Filtran LTD – 64 Kbit/s data In/Output Transformer

64 Kbit/s data
In/Output Transformer
TEW4974
SCOPE
TEW4974 and TEW4974-1 are
designed to operate in the 64 kbit
mode of the CCITT
recommendation G703 for
Hierarchical Digital Interfaces.
Applications:
Codirectional Interface
Contradirectional Interface
Features:
• TEW4974 is specifically designed
to meet the stringent BS6301
requirements for reinforced barrier
insulation.
• TEW4974 is fully encapsulated in
epoxy to ensure 4000V dielectric
strength.
• TEW4974-1 has an electrostatic
shield for improved noise rejection.
MECHANICAL
6
Line Side
4
1:2
TEW4974
1
2 Device
3
WHITE
DOT
AT PIN 1
All dimensions
are in inches
6
Line Side
4
1:2
TEW4974-1
1
2 Device
3
5
ELECTRICAL SPECIFICATIONS
Line Impedance
Turns Ratio
(6 - 4):(1 - 3)
Winding Resistance
(1 - 3)
(6 - 4)
Inductance @ 0.5V 3000 Hz
(6 - 4)
Leakage Inductance
(6 - 4)
Return Loss @ 0.5 V Application
CCITT G.703
Temperature
Operating
Storage
Dielectric Strength
TEW4974
120 Ω
1:2
5.2 Ω nom.
3.1 Ω nom.
> 16 mH
< 50 µH
Codirectional
para. 1.2.1.3
0 to +50^o C
- 40 to +70^o C
4000 Vrms
TEW4974-1
120 Ω
1:2
8.9 Ω nom.
2.8 Ω nom
> 24 mH
< 20 µH
Co- & Contradirectional
para. 1.2.1.3 & 1.2.3.1.6
0 to +50^o C
- 40 to +70^o C
1500 Vrms
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3,
5-4
Tel : [phone] Fax : [phone]