HIGH FREQUENCY MAGNETICS T1/E1 Octal Transformer Module TM02128 • Optimized for Intel LXT3108 eight channel device • Operating temperature range -40° to +85°C • Eight transformers in one surface mount package • Meets IEC 695, 2-2 flammability requirements • Four transformers have center taps to facilitate line driver circuitry • PWB Process Capability: standard printed wiring board assembly techniques, total-immersion cleaning • Meets ITU-T G.703 return loss from -40° to +85° C from 51 kHz to 3.072 MHz • Reliability testing: Shock, vibration, temperature cycling, temperature - humidity - bias • UL 1950 approved: file number E150991 • Interwinding breakdown voltage: 1500 Vrms min ELECTRICAL SPECIFICATIONS at 25° C Turns Ratio ±2% Primary Inductance at 10 kHz Leakage Inductance at 1 MHz IC : Line mH min µH max DCR Ω max Capacitance pF max Part Number S553-6500-F2 IC TX RX TX RX TX RX TX RX TX RX 1CT : 1 1:1 1.8 1.8 0.5 0.5 0.7 0.7 0.7 0.7 SCHEMATIC IC Side 1 1 RXO- 2 1 TXI+ 3 1:1 1CT : 1 1 TXI2 TXI+ 1CT : 1 2 TXICT 7 2 TXI- 3 RXO- 12 3 TXI+ 13 15 4 TXI+ 16 4 RXO- 20 RX 31 31 19 19 35 2 TXO+ 1. Terminated in 120 Ω on IC side 32 2 RXI- 30 3 RXI+ 28 3 TXO+ 27 1CT : 1 26 3 TXO25 4 TXO+ 24 23 4 TXO- 18 4 RXO+ 19 TX 29 3 RXI1CT : 1 4 TXICT 17 4 TXI- RX 31 2 RXI1:1 3 TXICT 14 3 TXI- TX 38 1 TXO+ 33 2 TXO1:1 2 RXO- 10 3 RXO+ 11 -40 to +85° C dB min 34 8 2 RXO+ 9 39 1 RXI- 25° C dB typ 36 1 TXO- 5 6 Line Side 40 1 RXI+ 37 1 TXICT 4 35 Return Loss at 102 kHz 120Ω Application1 S553-6500-F2 1 RXO+ Line 1:1 22 4 RXI+ 21 4 RXI©2002 Bel Fuse Inc. Specifications subject to change without notice. 02.02 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 1 HIGH FREQUENCY MAGNETICS T1/E1 Octal Transformer Module TM02128 MECHANICAL S553-6500-F2 1.100 [27.94] max 0.070 [1.78] ref 0.050 [1.27] 0.645 [16.38] 0.480 [12.19] 0.050 [1.27] 0.212 [5.38] ref 0.020 ±0.002 [0.51 ±0.05] 0.070 [1.78] R 0.015 [0.39] 0.030 [0.77] Suggested PCB Pad Layout R 0.005 [0.13] 0.225 [5.72] max 0.950 [24.13] 0.035 [0.89] 0.004 [0.10] 0.600 [15.24] 0.005 [0.13] min 0˚- 5˚ Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. Tape and Reel Packaging 44 mm wide by 24 mm pitch; 13 inch OD, 6 inch ID 200 modules per reel, maximum Meets ANSI/EIA 481-2 Carrier Tape Standards - JEDEC SO Package ©2002 Bel Fuse Inc. Specifications subject to change without notice. 02.02 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com Bel Fuse Ltd. 8F / 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com page 2