ISDN U Interface Transformers ELECTRONICS INC. • Optimized for Leading Transceiver I.C.’s • • Meets or exceeds UL1459 & IEC950 Standards • • 1500 Vrms Isolation • • Contact PCA for Cross Reference • Electrical Parameters @ 25° C Part Number EPR1166 EPR1167 EPR1168 EPR1169 Turns Ratio OCL (mH Min.) IDC (mA) Line DCR (Ω Max.) Chip DCR (Ω Max.) Line Side Pins 1:.25:1 1.65:1 1.50:1 1.50:1 26.5-30.0 15.0-18.0 25.6-28.4 14.2-15.8 30 18 22 22 12 6 20 16 7 3.5 3 2.5 1, 4 1, 4 1, 4 1, 4 Schematic 6 1 7 2 8 3 4 Package 4 Dimensions Notch Denotes Pin 1 1 N P PCA EPR11XX B Pad Layout Q D.C. 5 8 M A C E H F I K Dim. Min. A B C E F G H I K L M N P Q --.755 --.019 .145 .890 ----0° ----------- (Inches) Max. Nom. .785 .775 .470 .035 .155 .910 ----8° ----------- --.765 --.027 .150 .900 .024 .015 --.030 .050 .150 .070 .960 Min. (millimeters) Max. Nom. --19.18 --.483 3.68 22.61 ----0° ----------- 19.94 --19.69 19.43 11.94 --.889 .686 3.94 3.81 23.11 22.86 --.610 --.381 8° ----.762 --1.27 --3.81 --1.78 --24.38 L G PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 CSR1166 - CSR1169 Rev. - 11/18/99 Product performance is limited to specified parameters. Data is subject to change without prior notice. TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com