HIGH FREQUENCY MAGNETICS DS3/E3/STS-1 Mini-Octal Transformer Module • Optimized for line transceivers operating at E3, DS3 or STS-1 rates: 34.368 Mb/s, 44.736 Mb/s, 51.84 Mb/s • Eight transformers in a single surface mount package • Miniature octal 32-pin platform provides 33% area reduction compared to standard octal package • Meets ITU-T G.703 return loss from -40° to +85° C from 860 kHz to 51.55 MHz • UL 1950 approved: file number E150991 TM02133 • Operating temperature range -40° to +85°C • Meets IEC 695, 2-2 flammability requirements • PWB Process Capability: standard printed wiring board assembly techniques, total-immersion cleaning • Reliability testing: Shock, vibration, temperature cycling, temperature - humidity - bias • Interwinding breakdown voltage: 1500 Vrms min ELECTRICAL SPECIFICATIONS at 25° C Turns Ratio ±2% Part Number IC : Line S554-6500-20 Primary Inductance at 100 kHz 25° C µH min -40° C µH min Leakage Inductance at 1 MHz Capacitance C w/w µH max pF max Return Loss at 1.72 MHz 75Ω Application1 25° C dB typ -40 to +85° C dB min TX RX TX RX TX RX TX RX TX & RX TX RX TX RX 1:1 1:1 80 80 40 40 0.09 0.09 10 25 25 18 18 1. Terminated in 75 Ω on IC side SCHEMATIC The module is symmetrical and either side can be connected to the IC or to the line. S554-6500-20 Line Side IC Side 1 1:1 31 2 All transformers will support either TX or RX operation. 3 1:1 4 5 16 22 21 1:1 20 19 14 15 24 23 1:1 12 13 26 25 1:1 10 11 28 27 1:1 8 9 30 29 1:1 6 7 32 1:1 18 17 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 04.02 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 DS3/E3/STS-1 Mini-Octal Transformer Module TM02133 MECHANICAL S554-6500-20 0.050 [1.27] 1.050 [26.67] max 0.425 0.300 [10.80] [7.62] max 0.070 [1.78] 0.465 [11.81] 0.050 [1.27] pitch 0.020 ±0.002 [0.51 ±0.05] 0.025 [0.64] R0.005 [R0.13] typ R0.005 [R0.13] typ 0.290 [7.37] max 0˚-5˚ 0.004 0.750 [19.05] 0.010 [0.25] min 2X 0.035 [0.89] 2X 0.060 [1.52] Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. Tape and Reel Packaging 44 mm wide by 16 mm pitch; 13 inch OD, 4 inch ID 400 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. 04.02 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