TEW4977 FILTRAN | Alldatasheet
Document overview
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Technical content
TEW4977 & -1 are designed and approved to be used as an Input transformer with the following devices. Crystal CS61534, 61535, 61574, 6158, 61535A, 61574A, 61575, 6158A. Level One LXT 300, 301, 305, 304A,305A Also as an Output transformer for: Crystal CS61534, 61535, 61574 & 6158. Level One LXT 300, 301, 305 TEW4977-2 is designed to be used as an Output transformer, and TEW4977-3 as an Input trf. for: Brooktree BT8069B device Fully encapsulated in epoxy. Typical applications are:
- Primary rate ISDN network nodes.
- PBX or computer to T1/CEPT Digital trunks.
- High speed data link using T1/CEPT Digital trunk.
- TDM Multiplexers. BABT certified for reinforced insulation toEN60950 & EN41003 Cert # CR/T/0052 Line Impedance (Ohms) 75, 100 75 75, 100 75, 100 75 & 120 & 120 & 120 & 120 I.431 I.431 I.431 Return Loss T1.40 G.703 n/a G.703 G.703 G.703 BS6328 Dielectric Strength (Vrms) 4000 4000 4000 4000 4000 WHITE DOT AT PIN 1
2 Device
CEPT/T1 Input/Output Transformer TEW4977 Filtran Limited 229 Colonnade Road, Nepean, Ontario, Canada, K2E 7K3 2-18 Tel: (613) 226-1626 Fax: (613) 226-7124 ISSUE: F 97/10/22 4977.chp All dimensions are in inches ELECTRICAL SPECIFICATION TEW4977 -1 -2 -3 -4 MECHANICAL