ISDN S Interface Transformer 1CT : 2.5CT* Turns Ratio ( + 2% ) PARAMETER MIN. MAX. 22 Open Circuit Inductance SCHEMATIC DIAGRAM UNITS mHy Leakage Inductance 40 µHy Interwinding Capacitance (CW/W) 100 pF Distributed Capacitance (CD) 110 pF 1 8 2 7 Pri Sec Primary DC Resistance 2.13 2.88 ohms 3 6 Secondary DC Resistance 4.93 6.67 ohms 4 5 Isolation (HI-POT) 2.0K VRMS TEST CONDITIONS: Oscillation Voltage = 700mV Oscillation Frequency = 10.0 KHz Inductance measured on Primary winding. Pins 1 - 4 (short 2 & 3). *Short Pins 2 & 3 and 6 + 7 MEETS THE PULSE WAVEFORM TEMPLATE OF CCITT I.430. Flammability: Materials used in the production of these units are UL94-VO and meet requirements of IEC 695-2-2 needle flame test. Primary is Line Side Unbalanced current at TE: ∆ Idc = 1 mA max. Longitudinal Conversion Loss - 10KHz to 300 KHz: 60dB min. Unused Pins Omitted PHYSICAL DIMENSIONS inches (mm) 8-Pin Bottom View .400 (10.16) MAX. .558 (14.2) MAX. 1 8 2 7 3 6 4 5 .558 (14.2) MAX. .120 (3.05) MIN. .558 (14.2) MAX. .400 (10.16) .100 (2.54) TYP. .400 (10.16) .558 (14.2) MAX. RHOMBUS P/N: T-10404 CUST P/N: DATE: 12/09/98 Rhombus Industries Inc. Transformers & Magnetic Products www.rhombus-ind.com NAME: SHEET: 1 OF 1 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Phone: (714) 898-0960 FAX: (714) 896-0971