Approved Optics Approved 3COM 3CGBIC91 - Manual (Page 3)

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3CGBIC91-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