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| ISDN U-BUS Input/Output Transformer TEW4914 TEW4914 is designed to interface with the subscribers premises (NT) and the 2- wire line side of the Central Office Equipment (LT) in the ISDN Network. TEW4914 & -1 meet the electrical requirements for the MOTOROLA MC145472 device. Applications: * * * Low profile construction. Up to 50 mA line current. TEW4914-1 is certified to EN60950 and EN41003. MECHANICAL 1 6 DEVICE 2 LINE 7 DOT AT PIN #1 3 4 DIMENSIONS, Inches (mm) P/N TEW4914 L W H A B C S 0.025 (0.64) 0.87 0.83 0.63 0.60 0.20 0.12 (22.0) (21.0) (16.0)(15.3) (5.1) (3.0) TEW4914.chp ELECTRICAL Line Impedance Inductance Leakage Inductance Winding Resistance Turns Ratio Longitudinal Balance DC Capability (Line Side) Dielectric Strength TEW4914 135 > 25 mH < 20 H 3.8 2.9 1:2 > 60 dB > 55 dB 25 mA 1500 V rms TEW4914-1 135 > 25 mH < 20 H 4.9 3.3 1:2 > 60 dB > 55 dB 50 mA 4000 V rms (1-4) (6-7) (1-2) & (3-4) (6-7) (6-7) : (1-4) 1 - 4 KHz 4 - 160 KHz (1-4) Issue; C 94/12/14 Filtran Limited 229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3 Tel : (613) 226-1626 Fax : (613) 226-7124 4-13 |
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