ISDN S-Bus Input / Output Modules 8485 Units matched to leading transceiver IC’s. Meets impedance requirements of CCITT I.430 for both TE and NT over an extended temperature range –40 to + 85°C. IC MFG. FILTRAN P/N SIEMENS PSB 21381/21382/21383/21384 PEB3086 8485 8485 MECHANICAL AND SCHEMATIC UNLESS OTHERWISE SPECIFIED, ALL TOLERANCES ARE ±0.015 (All dimensions in inches) SUGGESTED PAD LAYOUT SCHEMATIC 1 .900 1.125 Max .100 8485 .480 .510 Max YYWWX .660 20 5 19 2 18 4 Sec:Pri .090 3 8 .018±.003 13 7 12 9 .030 .100±.010 .900±.010 6 11 Sec:Pri .610±.015 .300 Max 0°-8° .004 20 Surfaces .010±.005 10 .047 Typ ELECTRICAL SPECIFICATIONS @ 25°C Transformer Part Number 8485 Choke Ratio ±2% L Pri LL Sec Cw/w CD Pri DCR Pri DCR Sec (Pri:Sec) (mH MIN) (µH MAX) (pF MAX) (pF MAX) (Ω +25% MAX) (Ω +25% MAX) 1CT:1CT 30 10 150 100 3.4 3.4 Filtran Limited An ISO 9000 Registered Company L 4.7 mH DCR Secondary Pins (Ω MAX) 1.4 20-18, 13-11 360 Terry Fox Drive, Ottawa, ON CANADA K2K 2P5 Tel: (613) 226-1626 Fax: (613) 226-7124 2011/01/03 Details subject to change without notice. www.filtran.com