EGLXT973QEA3V-873181 Cortina Systems Inc, EGLXT973QEA3V-873181 Datasheet - Page 49
EGLXT973QEA3V-873181
Manufacturer Part Number
EGLXT973QEA3V-873181
Description
IC TXRX 2PORT ETH EXT 100-MQFP
Manufacturer
Cortina Systems Inc
Datasheet
1.EGLXT973QCA3V-873178.pdf
(97 pages)
Specifications of EGLXT973QEA3V-873181
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
1008-1001
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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
Page 49
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