defining a degree of excellence TOKENRINGNETWORKING COMPONENTS • Designed for use with multiple Token Ring transceivers, including Texas Instruments C380C30/C60 • IEEE 802.5 compliant 960042B • Low profile, miniature surface mount packaging • Cost efficient design approach • STP/UTP compatible impedances • For use with external on silicon integrated filtering • Rated to meet 225ºC peak IR reflow temperature ELECTRICALS AT 25ºC Part No. Turns Ratio 1-2-8 to 1-2-8 to 16-15-13-12 10-15-13-9 S556-5999-01 1CT:1CT 1CT:0.816CT OCL (µH) Min 1-8 616 Return Loss (dB) Min 1-17MHz 17-25MHz -16 -9 Insertion Loss (dB Max) 4MHz 8MHz 16MHz 24MHz -0.5 -0.8 -1.1 -1.9 Common to Common Mode Rej (dB) Min 5MHz 20MHz 200MHz -35 -35 -20 Ouput Impedance 1-3 16-12 10-9 150ý 150ý 100ý SCHEMATIC MECHANICAL Specifications subject to change without notice. Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel: 201-432-0463 • Fax: 201-432-9542 • E-Mail: [email protected] Website: http://www.belfuse.com defining a degree of excellence 960042B TOKENRINGNETWORKING COMPONENTS APPLICATION CIRCUIT APPLICATION NOTES • Bel has developed this product for use with token ring 4/16 Mbps transceivers in 150 ohm STP and 100 ohm UTP media applications; however, both the 150 ohm and 100 ohm connections cannot be simultaneous. The Bel module provides isolation and impedance matching transformers plus common mode choke for either a transmit or receive channel. External filtering is required. • Suppression of board induced noise can be achieved with precision layout instructions, along with careful consideration of the selection and placement of discrete components for the interface circuit. • Bel's low profile, surface mount packaging is ideal for high speed pick and place machinery. Parts can be shipped on tape and reel for high speed placement. Construction processes have been implemented for thermal compatibility with high temperature IR reflow assembly processing. Post dipping of leads assist with PC board solderability. Each part is optically inspected to meet rigid coplanarity requirements. Corporate Office Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302-4496 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: [email protected] Internet: http://www.belfuse.com Far East Office Bel Fuse Ltd. 8F/8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel: 852-2328-5515 Fax: 852-2352-3706 European Office Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Preston PR1 8UD Lancashire, U.K. Tel: 44-1772-556601 Fax: 44-1772-888366