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| 型号： | FTR-8519-3-2.5 |
| 元件分类： | 光收发 |
| 英文描述： | FIBER OPTIC TRANSCEIVER, REPEATER, 820-860nm, 2125Mbps(Tx), 2125Mbps(Rx), PANEL MOUNT |
| 文件页数： | 4/9页 |
| 文件大小： | 80K |
| 代理商： | FTR-8519-3-2.5 |
FTR-8519-3-2.5 2.5Gb/s GBIC Product Specification – February 2002
F i n i s a r
Finisar Corporation 14-Feb-2002 Rev.B
Page 4
IV.
High Speed Electrical Interface
All high-speed PECL signals are AC-coupled internally.
Low Speed Signal Parameters
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
RX_LOS Assert Level
--
-25.5
dBm
RX_LOS Deassert Level
--
-23
dBm
RX_LOS Hysteresis
--
1.5
dB
RX_LOS Assert Delay
t_loss_on
44
100
sec From detection of loss of signal
to assertion of RX_LOS
RX_LOS Negate Delay
t_loss_off
44
100
sec From detection of presence of
signal to negation of RX_LOS
TX_DISABLE Assert Time
t_off
5
10
sec Rising edge ot TX_DISABLE to
fall of output signal below 10%
of nominal
TX_DISABLE Negate Time
t_on
63
1000
sec Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal
TX_DISABLE Reset Time
t_reset
10
sec TX_DISABLE HIGH before
TX_DISABLE set LOW
TX_FAULT Initialize Time
t_init
300
msec
From power on after VCC >
3.15 V
TX_FAULT Assert Time
t_fault
100
sec From occurrence of fault (output
safety violation or VCC <
3.15V)
Table 4. Low speed signal parameters
High Speed Electrical
Interface
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
Data Input Voltage
Vin
650
2000
mV
PECL differential peak - peak
Data Output Voltage
Vout
370
2000
mV
PECL differential peak - peak
Duty Cycle
--
50
%
PECL rise/fall
Tr,Tf
120
175
psec
20%-80% Differential
Bit Error Rate
BER
10
-12
error/sec
PRBS 2
7 - 1 test data pattern
Tx Input Impedance
Zin
75
ohm
Rx Output Impedance
Zout
75
ohm
Table 5. High-speed electrical interface
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