CEPT /T1 TEW5281 Input Transformer TEW5281 is designed and approved to be used as a Receive Transformer in T1 and CEPT applications with the following devices: 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. – Dallas DS2187 Typical applications are: – PMC -Sierra PM4341 T1X PM6431 E1 • Primary rate ISDN network nodes. • PBX or computer to T1/CEPT Digital Trunks. • TDM Multiplexers. – AT&T T729O – EXAR T5683 TEW5281-3 is designed to be used as an input transformer for: – Dallas DS5151Q DS5153Q BABT certified for reinforced insulation to EN60950 & EN41003 Cert #: CR/T/0052 MECHANICAL 6 1 2 Line side 4 WHITE DOT AT PIN 1 5281.chp 97/09/08 3 ELECTRICAL SPECIFICATIONS TEW5281-1 -2 -3 Line Impedance 100, 120 Ω 75 Ω 75,100 120 (1 - 3) (6 - 4) 1.55 0.85 1.11 0.55 0.8 0.7 (6 - 4):(1 - 3) 1:2 1:2 1:1 ( 6 - 4) > 3.5 > 0.7 1.8 T1 & CEPT CEPT T1 & CEPT T1.408 & I.731 I.431 T1.408 & I.731 T1.408 G.703 G.703 BS6328 T1.408 & G.703 4000 4000 4000 DCR (Ohms) ISSUE: D Device nom nom Turns Ratio Inductance (mH) Pulse Mask Longitud. Bal. Return Loss Dielectric Strength (Vrms) Filtran Limited 229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3, Tel : (613) 226 1626 Fax : (613) 226 7124 2-30