TEW4921 Datasheet, PDF (1/1 Pages) Filtran LTD – CEPT /T1 Output Transformer

CEPT /T1
Output Transformer
TEW4921 is designed and ap-
proved to be used as a transmit
transformer with the Mitel
MT89760/-60B and MT89790/-
90B devices in T1 and CEPT ap-
plications.
Complies with ANSI T1.408 and
CCITT I.431., with regards to
Longitudinal Balance.
TEW4921-2 is designed for
MT89790B when operating from
a single 5 Vdc supply.
Typical applications are:
• Primary rate ISDN network
nodes.
• PBX or computer to
T1/CEPT Digital Trunks.
• TDM Multiplexers.
Fully encapsulated in epoxy.
BABT certified for reinforced in-
sulation to EN60950 & EN41003.
Cert #: CR/T/0052
TEW4921
MECHANICAL
6
Line side
4
TEW4921 & -1
1
2 ^Device
3
6
WHITE
DOT
AT PIN 1
Line side
5
4
TEW4921-2
ELECTRICAL SPECIFICATIONS
Impedance
DCR
(Ohms)
Turns ratio
Inductance (mH)
Pulse Mask
Longitud. Bal. (dB)
(1 - 3)
(6 - 4)
(1-2):(2-3):(6 -4)
(1-2):(2-3):(6 -5)
(6 - 4)
50 - 1544 KHz
Dielectric Strength, (Vrms)
Temperatures Operating
Storage
0^o to 50^o C
-20^o to 80^o C
TEW4921
100 & 120 Ω
3.5
0.35
1 : 1 : 0.53
n/a
> 1.0
T1 & CEPT
> 40 dB
4000 V
TEW4921-1
75 Ω
3.5
0.25
1 : 1 : 0.39
n/a
> 0.57
CEPT
> 40 dB
4000 V
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3,
Tel : [phone] Fax : [phone]
1
2 ^Device
3
TEW4921-2
75/120 Ω
3.5
0.35
1 : 1 : 1.37
1 : 1 : 1.12
> 1.5
CEPT
> 40 dB
4000 V
2-15