DS3/E3/STS-1 Isolation Transformer ELECTRONICS INC. EPR1345S • Designed for TDK’s 78P2344 Chip • Transfer Molded Part • Isolation : 1500 Vrms Electrical Parameters @ 25° C Cable Side OCL (µH Typ.) Leakage Inductance (µH Max.) Insertion Loss (dB Max.) Bandwidth Cw/w (pF Max.) 100 KHz, 0.1 Vrms 1 MHz, 0.1 Vrms 200 KHz-200 MHz 200 KHz-200 MHz 1 MHz, 0.1 Vrms Chip Side Cable Side 40 0.12 -3 10 0.5 0.3 DCR (Ω Max.) • Return Loss : -12 dB Min. @ 860 KHz, -18 dB Min. @ 1.72 MHz, -18 dB Min. @ 34.37 MHz, -14 dB Min. @ 51.6 MHz • • Impedance (Cable Side) : 75 Ω • Schematic Transmit Channel 40, 35, 30 1, 6, 11 Chip 2, 7, 12 Side 3, 8, 13 Receive Channel 2CT:1 4, 9, 14 Cable Side 38, 33, 28 (Gnd) 37, 32, 27 Chip Side 5, 10, 15 Cable Side 36, 31, 26 (Gnd) 1:1 Package 1.120 (28.45) .090 (2.29) .050 (1.27) .085 (2.16) PCA EPR1345S Date Code 40 21 .670 Solder Pad Layout (17.02) 1 20 .480 (12.19) .950 (24.13) .030 (.762) .010/.015 (.254/.381) .260 (6.60) .050 (1.27) .016/.022 (.406/.559) .008/.012 (.203/.305) 0°-8° .035 (.889) .600 (15.24) Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSR1345S Rev. 2 1/7/03 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com