Performance specifications – Approved Optics Approved FOUNDRY E1G-SX User Manual
Page 3
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E1G-SX-A 
1000BASE-SX GBIC MMF 
850NM 550M REACH SC 
 
 
PERFORMANCE SPECIFICATIONS
Parameter
Symbol
Min.
Typ.
Max
Unit
Notes
Transmitter
LVPECL 
Inputs(Differential)
Vin
400
2500
mVp
AC coupled inputs
Input Impedance 
(Differential)
Zin
85
100
115
ohms
Rin > 100 kohms 
@ DC
Tx_DISABLE Input 
Voltage - High
2
Vcc+0.3
V
Tx_DISABLE Input 
Voltage -Low
0
0.8
V
Tx_FAULT Output 
Voltage -- High
Vcc-
0.5
Vcc+0.3
V
Io = 400µA; Host 
Vcc
Tx_FAULT Output 
Voltage --Low
0
0.5
V
Io = -4.0mA
Receiver
LVPECL Outputs 
(Differential)
Vout
400
800
1200
mVpp
AC coupled 
outputs
Output Impedance 
(Differential)
Zout
85
100
115
ohms
Rx_LOS Output 
Voltage - High
Vcc-
0.5
Vcc+0.3
V
lo = 400µA; Host 
Vcc
Rx_LOS Output 
Voltage -Low
0
0.8
V
lo = -4.0mA
MOD_DEF ( 0:2 )
VoH
2.5
V
With Serial ID
VoL
0
0.5
V