LAN 10/100 BASE-TX DUAL PORT MODULE 7248 • Designed to support two RJ-45 connectors • Compliant with IEEE 802.3u and ANSI X3.263 standards MECHANICAL AND SCHEMATIC (All dimensions in inches) SUGGESTED PAD LAYOUT SCHEMATIC 0.690 +TD1 1 24 X .020 24 +TX1 0.550 TDCT1 2 23 TXCT1 -TD1 3 7248 FD/C 0.500 0.480 0.650 1:1 2 -TX1 +RD1 4 21 +RX1 RDCT1 5 20 RXCT1 -RD1 6 11 X .050 11 X 0.050 19 -RX1 1:1 24 X 0.030 18 +TX2 +TD2 7 0.5508 17 TXCT2 TDCT2 8 16 -TX2 -TD2 9 1:1 15 +RX2 +RD2 10 0.010 0.30 MAX 14 RXCT2 RDCT2 11 -RD2 12 24 X 0.045 13 -RX2 1:1 Part Number 7248 Insertion Loss (dB TYP) Differential to Common Mode Rejection (dB TYP) Return Loss (dB MIN) Crosstalk (dB TYP) 0.1-100MHz 2-30MHz 40 MHz 50 MHz 60-80MHz 1-60MHz 60-200MHz 1MHz 30MHz 60MHz 100MHz -1.2 -18 -16 -14 -12 -45 -35 -60 -45 -40 -35 ISSUE: A 23/10/01 7248 ELECTRICAL SPECIFICATION @ 25˚C An ISO 9001 Registered Company 229 Colonnade Road, Nepean, Ontario, Canada K2E 7K3 Tel: (613) 226-1626 Fax: (613) 226-7124 www.filtran.com