GDLXT9785MBC.D0-854707 Cortina Systems Inc, GDLXT9785MBC.D0-854707 Datasheet - Page 168

• Manufacturer Part Number: GDLXT9785MBC.D0-854707
• Manufacturer: Cortina Systems Inc

Specifications of GDLXT9785MBC.D0-854707

• Lead Free Status / RoHS Status: Not Compliant

LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
Figure 37
Cortina Systems
Recommended LXT9785/LXT9785E-to-5 V Fiber Transceiver Interface
Circuitry
®
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
1. Refer to the transceiver manufacturers’ recommendations for termination circuitry.
2. See
LXT9785(E)
GNDPECL
VCCPECL
SD_2P5V
TPFONn
TPFOPn
TPFINn
TPFIPn
SDn
Figure 38 on page 169
+2.5V
27Ω
50Ω
− 0.1μF
0.01μF
+2.5V
+2.5V
2
3.3V
50Ω
− 0.1μF
0.01μF
127Ω
118Ω
ON Semiconductor*
for recommended logic translator interface circuitry.
PECL-to-LVPECL
Logic Translator
MC100LVEL92
0.01μF
0.01μF
127Ω
118Ω
0.01μF
0.01μF
1.15kΩ
3.1kΩ
270Ω
1.1kΩ
+5V
270Ω
3.1kΩ
5.3 Typical Application Circuits
TD +
Fiber Txcvr
TD -
RD -
RD +
SD
− 0.1μF
0.01μF
5V
1
Page 168