H1267NL Datasheet, PDF (3/5 Pages) Pulse A Technitrol Company – 10/100BASE-T SINGLE PORT, SMT TRANSFORMER

10/100BASE-T SINGLE PORT,
SMT TRANSFORMER
For Fast Ethernet to Gigabit Ethernet
Interchangeable Designs
H1267
Application Circuit
CHIP SIDE
Fast Ethernet Circuit
CABLE SIDE
1
2
3
4
(2X 0.01 µF)
H1267
5
6
7
8
4X 75 W
EFI Capicitor
(1000 pF, 2 kV)
The above circuit is a simple interface for a Fast Ethernet tranformer connecting to both the Fast Ethernet silicon and the RJ-45 connector. In order
to design a gigabit application, simply replace the Fast Ethernet Silicon, the Fast Ethernet transformer and the rest of the passive components with a
gigabit ethernet silicon, a gigabit transformer and the rest of the passive components.
It is highly recommended that the cable side Center Taps of each transformer be terminated to 75 Ω resistors and that the four center taps be
terminated to an EFI capacitor prior to ground termination.
USA 858 674 8100 • UK 44 1483 401 700 • France 33 3 84 35 04 04 • Singapore 65 6287 8998 • Shanghai 86 21 32181071 • China 86 769 5538070 • Taiwan 886 2 26980228
www.pulseeng.com
3
H342.B (8/05)