Token Ring Transformers IEEE 802.5 Compatible -- High Isolation Single and Dual Low Profile Packages Designed For IBM Token Ring Applications Insertion Loss ..................... 0.5 dB max. at 10 MHz Return Loss ............................ 20 dB min. at 5 MHz Dielectric withstanding voltage ............... 500 Vrms CMRR .................................... -60 dB min. at 1 MHz Electrical Specifications at 25OC OCL Part Turns min. Number Ratio ( µH ) CW/W max. ( pF ) LL max. ( µH ) Rise Time max. ( ns ) Primary Primary Secondary Secondary Pri & Sec. DCR max. (Ω) Style Package T-11200 1:1:2:2 1000 15 .40 15.0 0.4 & 0.8 Single 8-Pin T-11201 1:1:2:2 1000 15 .40 15.0 0.4 & 0.8 Dual 16-Pin T-11202 1:1:2:2 250 15 .15 15.0 0.5 & 0.8 Single 8-Pin T-11203 1:1:2:2 250 15 .15 15.0 0.5 & 0.8 Dual 16-Pin T-11204 1:1:1:1 750 25 .20 5.0 1.0 & 1.0 Single 8-Pin T-11205 1:1:1:1 750 25 .20 5.0 1.0 & 1.0 Dual 16-Pin Token Ring Transformers - DIP / SMD Packages Refer to Schematic Diagrams and General Parameters at top of page. Electrical Specifications at 25OC DIP OCL Part Turns min. Number Ratio ( µH ) CW/W max. ( pF ) LL max. ( µH ) Rise Time max. ( ns ) Pri & Sec. DCR max. (Ω) Style Package T-11280 1:1:2:2 1000 15 .40 15.0 0.4 & 0.8 Single 8-Pin T-11281 1:1:2:2 1000 15 .40 15.0 0.4 & 0.8 Dual 16-Pin T-11282 1:1:2:2 250 15 .15 15.0 0.5 & 0.8 Single 8-Pin T-11283 1:1:2:2 250 15 .15 15.0 0.5 & 0.8 Dual 16-Pin T-11284 1:1:1:1 750 25 .20 5.0 1.0 & 1.0 Single 8-Pin T-11285 1:1:1:1 750 25 .20 5.0 1.0 & 1.0 Dual 16-Pin T-11206 1:1:2:2 60 14 .30 3.0 0.2 & 0.4 Single 8-Pin T-11208 1:1:2:2 60 14 .30 3.0 0.2 & 0.4 Dual 16-Pin T-11210 1:1:1:1 60 14 .30 3.0 0.2 & 0.2 SIngle 8-Pin T-11212 1:1:1:1 60 14 .30 3.0 0.2 & 0.2 Dual 16-Pin Specifications subject to change without notice. Rhombus Industries Inc. For other values & Custom Designs, contact factory. 36 8 &16 Pin DIP/SMD Packages (Add G or J to P/N for SMD) See pg. 40, fig. 4, 5 & 6 D J G SMD versions available on Tape & Reel TOK - 7/97 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971