ISDN U-Interface Transformers For both 2B1Q & 4B3T ISDN U-Interface Applications Meets key parameters of ANSI T1.601-1992 Excellent Longitudinal Balance Isolation 2000VRMS Minimum Designed for use with leading Transceiver Chips Higher Isolation Models Available Schematic "A" Electrical Specifications at 25OC Turns Ratio (+3%) OCL1 +6% Pri ( mH ) Line Side Pins T-13200 1:1 22 2-11 T-13201 1:1.5 22 2-11 T-13202 1:1.8 22 2-11 6.0 13.5 60 2B1Q 2000 A T-13203 1:2 22 2-11 6.0 18.5 60 2B1Q 2000 A T-13204 1:2.5 22 2-11 6.0 28 60 2B1Q 2000 A T-13205 1.50:1 27.0 5-7 10.0 5.0 60 2B1Q 2000 B T-13216 1.50:1 35.0 5-7 10.0 5.0 60 2B1Q 2000 B T-13226 1.32:1 7.9 5-7 2.5 2.0 60 4B3T 2000 B T-13227 1.65:1 14.5 5-7 3.0 2.0 80 2B1Q 2000 B T-13229 1.60:1 14.5 5-7 3.5 3.0 60 2B1Q 2000 B T-13230 1.50:1 14.5 5-7 3.0 2.0 60 2B1Q 2000 B T-13231 2.0:1 27.0 5-7 7.0 3.0 80 2B1Q 2000 B Part Number Line Side Device Side 1 2 NOTE: (For All Parts) OCL Tested @10 kHz / 700 mV, on Line Side pins 1&12 shorted for Schem. "A"; pins 8&6 for Schem. "B." Operating Temp. Range -400C to +850C Primary is Line Side Secondary is Chip Side Surge Voltage Capability: Metallic Voltage: 800 V peak, 10/700 µS Longitudinal Voltage: 2400 V peak, 10/560 µS DCR max. (Ω) DCR max. (Ω) DC Bias (mA) Coding Isolation (VRMS) Schem. Style 6.0 7.0 60 2B1Q 2000 A 6.0 11.5 60 2B1Q 2000 A 1 2 Longitudinal Balance (2B1Q Coding) 281 Hz to 40 KHz 55 dB min. > 40 KHz -20 dB/decade 5 1 6 12 7 11 8 2 5 8 Chip Side 6 11 For Complete Details including PDF Catalogs & Data Sheets on this and other product families visit www.rhombus-ind.com Line Side 7 Transformer Part # T-13226 AMD AM2091 (C) T-13229 AT&T T7262/63 T-13230 Mietec MTC 2071 T-13226 MT 8910 T-13227 Motorola MC145472 T-13231 National TP 3410 T-13205 Siemens PEB 2090 T-13226 Siemens PEB 2091 (C1) T-13229 SGS-Thomson ST5410 T-13205 SGS-Thomson STLC5411 T-13216 Mitel 20 dB min. Chip Side Schematic "B" Manufacturer I.C. Name Part Number AMD AM 20902 Longitudinal Balance (4B3T Coding) 5 KHz 20 dB min. 20 KHz to 150 KHz 40 dB min. 1 MHz 36 dB min. Return Loss 10 and 25 KHz Line Side 2 Package Physical Dimensions in inches (mm) RM-8 Package Specifications subject to change without notice. Rhombus Industries Inc. For other values & Custom Designs, contact factory. 18 ISDN-URM - 10/97 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971