TEW4921

www.DataSheet4U.com CEPT /T1 TEW4921 is designed and approved to be used as a transmit transformer with the Mitel MT89760/-60B and MT89790/90B devices in T1 and CEPT applications. 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. Output Transformer Typical applications are: Primary rate ISDN network nodes. PBX or computer to T1/CEPT Digital Trunks. TDM Multiplexers. TEW4921 Fully encapsulated in epoxy. BABT certified for reinforced insulation to EN60950 & EN41003. Cert #: CR/T/0052 MECHANICAL 6 Line side 4 TEW4921 & -1 6 WHITE DOT AT PIN 1 1 2 3 Device 1 2 3 TEW4921-2 Device Line side 5 4 ELECTRICAL SPECIFICATIONS Impedance TEW4921.chp TEW4921 100 & 120 Ω TEW4921-1 75 Ω 3.5 0.25 1 : 1 : 0.39 n/a > 0.57 CEPT > 40 dB 4000 V TEW4921-2 75/120 Ω 3.5 0.35 1 : 1 : 1.37 1 : 1 : 1.12 > 1.5 CEPT > 40 dB 4000 V DCR Turns ratio Inductance (Ohms) (1 - 3) (6 - 4) (1-2):(2-3):(6 -4) (1-2):(2-3):(6 -5) 3.5 0.35 1 : 1 : 0.53 n/a > 1.0 T1 & CEPT 94/11/02 (mH) (6 - 4) ISSUE: E Pulse Mask Longitud. Bal. (dB) 50 - 1544 KHz > 40 dB 4000 V Dielectric Strength, (Vrms) Temperatures Operating Storage 0o to 50o C -20o to 80o C Filtran Limited 229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3, Tel : (613) 226 1626 Fax : (613) 226 7124 2-15 ...