TEW5281 FILTRAN | Alldatasheet
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Technical content
TEW5281 is designed and ap- proved to be used as a Receive Transformer in T1 and CEPT ap- plications with the following de- vices: – Dallas DS2187 – PMC -Sierra PM4341 T1X PM6431 E1 – AT&T T729O – EXAR T5683 TEW5281-3 is designed to be used as an input transformer for: – Dallas DS5151Q DS5153Q Complies with ANSI T1.408 and CCITT I.431 with regards to Longitudinal Balance, and with T1.408, G.703 and BS6328 for the Return Loss. Typical applications are:
- Primary rate ISDN network nodes.
- PBX or computer to T1/CEPT Digital Trunks.
- TDM Multiplexers. BABT certified for reinforced insulation toEN60950 & EN41003 Cert #: CR/T/0052 Line Impedance 100, 120 Ω 75 Ω 75,100 120 DCR (Ohms) nom (1 - 3) 1.55 1.11 0.8 nom (6 - 4) 0.85 0.55 0.7 Turns Ratio (6 - 4):(1 - 3) 1 : 2 1 : 2 1 : 1 Inductance (mH) ( 6 - 4) > 3.5 > 0.7 1.8 Pulse Mask T1 & CEPT CEPT T1 & CEPT Return Loss T1.408 G.703 T1.408 & G.703 G.703 BS6328 Dielectric Strength (Vrms) 4000 4000 4000 ISSUE: D 97/09/08 5281.chp WHITE DOT AT PIN 1 Line side Device Filtran Limited 229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3, 2-30 Tel : (613) 226 1626 Fax : (613) 226 7124 CEPT /T1 Input Transformer TEW5281 MECHANICAL ELECTRICAL SPECIFICATIONS TEW5281-1 - 2 -3