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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： | 3/9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 3
II.
+5/3.3V Volt Electrical Power Interface
Finisar GBICs have an extended power supply voltage range of 3.15V to 5.5V as
described in Table 2. The GBIC specification calls for a range of 4.75V to 5.25 volts.
The 6V maximum voltage is not allowed for continuous operation, however, TX_FAULT
and TX_DISABLE circuitry in Finisar GBICs will function at 6V.
III. Low Speed Signals
RX_LOS, TX_DISABLE, and TX_FAULT are TTL signals as described in Table 3.
MOD_DEF(1) (SCL) and MOD_DEF(2) (SDA), are open drain CMOS signals (see
section VI, “Serial Communication Protocol”).
Both MOD_DEF(1) and MOD_DEF(2)
must be pulled up to host_Vcc. If host_Vcc is 3.3V, then they must be pulled to 3.3V. If
host_Vcc is 3.3V, do not pull the MOD_DEF pins to 5V.
For more detailed information, see sections 5.3.1 – 5.3.8 in the GBIC Specification Rev.
5.4
1.
+5/3.3 Volt Electrical Power
Interface
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
Supply Current
Is
190
250
mA
Maximum Voltage
Vmax
6
V
Surge Current
Isurge
+30
mA
Hot plug, above steady
state current.
Input Voltage
Vcc
3.15
3.3, 5
5.5
V
Referenced to GND.
3.3V & 5V compatible.
Table 2. +5/3.3 Volt electrical power interface
Low Speed Signals, Electronic
Characteristics
Parameter
Symbol
Min
Max
Units
Notes/Conditions
GBIC Output LOW
VOL
0
0.5
V
4.7k to 10k pull-up to host_Vcc,
measured at host side of connector
GBIC Output HIGH
VOH
host_Vcc - 0.5 host_Vcc + 0.3
V
4.7k to 10k pull-up to host_Vcc,
measured at host side of connector
GBIC Input LOW
VIL
0
0.8
V
4.7k to 10k pull-up to Vcc,
measured at GBIC side of
connector*
GBIC Input HIGH
VIH
2
Vcc + 0.3
V
4.7k to 10k pull-up to Vcc,
measured at GBIC side of
connector*
*Note VIH and VIL are the same for both 5V and 3.3V operation
Table 3. Low speed signals – electronic characteristics
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