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FCLF-8520/8521-3 1000BASE-T SFP Product Specification
F i n i s a r
II.
+3.3V Volt Electrical Power Interface
The FCLF-8520/8521-3 has an input voltage range of 3.3 V +/- 5%. The 4 V maximum
voltage is not allowed for continuous operation.
+3.3 Volt Electrical Power
Interface
Parameter
Supply Current
Symbol
I s
Min
Typ
320
Max
375
Units
mA
Notes/Conditions
1.2W max power over
full range of voltage
and temperature.
See caution note below
Input Voltage
V cc
3.13
3.3
3.47
V
Referenced to GND
Maximum Voltage
V max
4
V
Surge Current
I surge
30
mA
Hot plug above steady state
current. See caution note
below
Caution: Power consumption and surge current are higher than the specified values in the SFP MSA
Table 2. +3.3 Volt electrical power interface
III. Low-Speed Signals
MOD_DEF(1) (SCL) and MOD_DEF(2) (SDA), are open drain CMOS signals (see
section VII, “Serial Communication Protocol”). Both MOD_DEF(1) and MOD_DEF(2)
must be pulled up to host_Vcc.
Low-Speed Signals,
Electronic Characteristics
Parameter
Symbol
Min
Max
Units Notes/Conditions
SFP Output LOW
V OL
0
0.5
V
4.7k to 10k pull-up to host_Vcc,
measured at host side of connector
SFP Output HIGH
V OH
host_Vcc - 0.5 host_Vcc + 0.3
V
4.7k to 10k pull-up to host_Vcc,
measured at host side of connector
SFP Input LOW
V IL
0
0.8
V
4.7k to 10k pull-up to Vcc,
measured at SFP side of connector
SFP Input HIGH
V IH
2
Vcc + 0.3
V
4.7k to 10k pull-up to Vcc,
measured at SFP side of connector
Table 3. Low-speed signals, electronic characteristics
? Finisar Corporation December 16, 2005 RevB
Page 3
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