name: sheet: date: rhombus p/n: cust p/n: 15801 chemical lane, huntington beach, ca 92649 phone: (714) 898-0960 fax: (714) 896-0971 rhombus transformers & magnetic products industries inc. www.rhombus-ind.com 1 of 1 7/2/96 T-13231 u interface transformer (2b1q coding applications) designed for use with motorola mc145472 parameter min. max. units primary inductance (line side) 1 25.38 28.62 mh pins 7 to 5 with 8 & 6 shorted. primary dc resistance 7.0 ohms secondary dc resistance 3.0 ohms isolation (hi-pot) 2000 v rms dc bias 80 ma return loss 10khz & 25 khz 20 db longitudinal balance (281 hz to 40 khz) 55 db turns ratio ( + 3 % ) (line : chip) 2.0 : 1 flammability: materials used in the production of these units meet requirements of ul94-vo and iec 695-2-2 needle flame test. physical dimensions inches (mm) rm-8 package chip side 2 11 5 8 6 7 line side schematic note: 1. tested @10 khz / 700 mv, on line side operating temp. range -40 0 c to +85 0 c primary is line side (pins 5,8,6,7) secondary is chip side (pins 2,11) surge voltage capability metallic voltage: 800 v peak, 10/560 m s longitudinal voltage: 2400 v peak, 10/700 m s
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