SLXT973QE Cortina Systems Inc, SLXT973QE Datasheet - Page 49

• Manufacturer Part Number: SLXT973QE
• Manufacturer: Cortina Systems Inc

Specifications of SLXT973QE

• Lead Free Status / RoHS Status: Not Compliant

LXT973 Transceiver
Datasheet
249426, Revision 6.0
13 July 2007
Figure 15
Cortina Systems
Recommended LXT973 Transceiver-to-5 V Fiber Transceiver Interface
Circuitry
®
LXT973 10/100 Mbps Dual-Port Fast Ethernet PHY Transceiver
1. Refer to the transceiver manufacturers’ recommendations for termination circuitry.
2. See
GNDPECL
VCCPECL
LXT973
SD_2P5V
DPANn
DPBNn
DPAPn
DPBPn
SDn
Figure 16
+2.5 V
for recommended logic translator interface circuitry.
27 Ω
50 Ω
0.01 μF -
0.1 μF
+2.5 V
+2.5 V
2
3.3 V
50 Ω
0.01 μF -
0.1 μF
127 Ω
118 Ω
ON Semiconductor*
PECL-to-LVPECL
Logic Translator
0.01 μF
0.01 μF
MC100LVEL92
127 Ω
118 Ω
0.01 μF
0.01 μF
1.15 kΩ
3.1 kΩ
270 Ω
1.1 kΩ
+5 V
3.1 kΩ
270 Ω
4.2 Typical Application Circuits
TD +
RD +
Fiber Txcvr
RD -
TD -
SD
0.01 μF -
0.1 μF
5 V
1
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