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參數(shù)資料
| 型號(hào)： | FCM-8521-3 |
| 元件分類： | 光收發(fā) |
| 英文描述： | FIBER OPTIC TRANSCEIVER, 1250Mbps(Tx), 1250Mbps(Rx), PANEL MOUNT |
| 文件頁數(shù)： | 3/7頁 |
| 文件大小： | 163K |
| 代理商： | FCM-8521-3 |
FCM-8520/8521-3 1000BASE-T GBIC Product Specification
Fin i sar
Finisar Corporation
Page 3
Rev A, Feb 2003
II.
+5V Volt Electrical Power Interface
The FCM-8520/8521-3 has an extended input voltage range of 4.5 to 5.5 V, compared to
the GBIC standard of 4.25 to 5.25 V. The 6V maximum voltage is not allowed for
continuous operation.
Note:
1.
Caution: Power consumption and inrush current are higher than the specified
values in the GBIC Specification Rev 5.51.
III. Low-Speed Signals
RX_LOS is a TTL signals as described in Table 3 and 4. 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. For more detailed information, see sections 5.3.1 – 5.3.8 in the GBIC
Specification Rev. 5.51.
+5 Volt Electrical Power
Interface
Parameter
Symbol
Min
Typ
Max
Units Notes/Conditions
Supply Current
Is
310
375
mA
1.7W max power over
full range of voltage
and temperature.
See Note 1.
Input Voltage
Vcc
4.5
5
5.5
V
Referenced to GND.
Maximum Voltage
Vmax
6
V
Surge Current
Isurge
450
mA
Hot plug. See Note 1.
Table 2. +5 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
Table 3. Low-speed signals, electronic characteristics
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