ISDN-S Interface Dual Transformers EPR1261G ELECTRONICS INC. • Optimized for Leading Transceiver I.C.’s • • Meets CCITT 1.430 Four Wire “S” Interface • • Meets or exceeds UL1459, UL1950 Standards • • 1500 Vrms Isolation (1 Minute) • Electrical Parameters @ 25° C OCL (mH Min.) Cw/w (pF Max.) Leakage Inductance (µH Max.) Turns Ratio Pri. DCR (Ω Max.) @ 10 KHz, 1 Vrms @ 100 KHz, .02 Vrms @ 100 KHz, .02 Vrms 1:2CT 20 130 5 --- Pins 1-3 Pins 6-8 Pins 1-3 to 16-14 Pins 6-8 to 11-9 Pins 1-3 w/ 16-14 shorted Pins 6-8 w/ 11-9 shorted --- Sec. DCR (Ω Max.) Primary Pins 2.65 5 1,3/6,8 --- --- --- --- --- --- Schematic Secondary (Chip Side) 16 15 14 13 12 1 2 3 4 11 10 9 6 7 8 Primary (Line Side) 5 Package A J N PCA EPR1261G D.C. Pin 1 I.D. B Q D Solder Pad Layout P M E C H Dimensions F K L I G PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 CSR1261G Rev. 1 Dim. Min. A B C D E F G H I J K L M N P Q .930 .570 .385 --.005 --.725 .018 .008 --0° .025 --------- (Inches) Max. Nom. .950 .590 .405 --.015 --.745 .022 .012 --8° .045 --------- .940 .580 .395 .700 .010 .100 .735 .020 .010 .120 --.035 .030 .100 .085 .780 5/3/05 JDG Product performance is limited to specified parameters. Data is subject to change without prior notice. Min. (millimeters) Max. Nom. 23.62 14.48 9.78 --.127 --18.41 .457 .203 --0° .635 --------- 24.14 14.99 10.29 --.381 --18.92 .559 .305 --8° 1.14 --------- 23.88 14.73 10.03 17.78 .254 2.54 18.67 .508 .254 3.05 --.889 .762 2.54 2.16 19.81 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com