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参数资料
| 型号： | AFCT-5745TPZ |
| 元件分类： | 光收发 |
| 英文描述： | FIBER OPTIC TRANSCEIVER, 1270-1360nm, 2700Mbps(Tx), 2700Mbps(Rx), BOARD/PANEL MOUNT, LC CONNECTOR |
| 封装： | ROHS COMPLIANT, PLASTIC, DIP-20 |
| 文件页数： | 14/18页 |
| 文件大小： | 524K |
| 代理商： | AFCT-5745TPZ |
5
Notes:
1. TX_FAULT is an open collector/drain output which should be pulled up externally with a 4.7 – 10 KW resistor on the host board to a supply <
VCC +0.3 V. When high, this output indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be
pulled to < 0.8 V.
2. TX disable input is used to shut down the laser output per the state table below (internal 10 KW pull-up resistor).
Low (0 – 0.8 V):
Transmitter on
Between (0.8 V and 2.0 V):
Undefined
High (2.0 – 3.465 V):
Transmitter Disabled
Open:
Transmitter Disabled
3. Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7-10 KW resistor on the host board to a supply less
than VCCT +0.3 V or VCCR +0.3 V.
Mod-Def 0 is grounded by the module to indicate that the module is present
Mod-Def 1 is clock line of two wire serial interface for optional serial ID
Mod-Def 2 is data line of two wire serial interface for optional serial ID
4. LOS (Loss of Signal) is an open collector/drain output which should be pulled up externally with a 4.7 – 10 KW resistor on the host board to
a supply < VCCT,R+0.3 V. When high, this output indicates the received optical power is below the worst case receiver sensitivity (as defined
by the standard in use). Low indicates normal operation. In the low state, the output will be pulled to < 0.8 V. Please see later section for LOS
timing.
5. VEER and VEET are internally connected within the SFP module
6. RD-/+: These are the differential receiver outputs. They are ac coupled 100 W differential lines which should be terminated with 100 W differ-
ential at the user SERDES. The ac coupling is done inside the module and is thus not required on the host board. The voltage swing on these
lines will be between 370 and 2000 mV differential (185 – 1000 mV single ended) when properly terminated.
7. VCCR and VCCT are the receiver and transmitter power supplies. They are defined as 3.1 – 3.5 V at the SFP connector pin. The maximum supply
current is 300 mA. VCCR and VCCT are internally connected. See the Application Note for further recommendations on power supply filtering.
8. TD-/+: These are the differential transmitter inputs. They are ac coupled differential lines with 100 W differential termination inside the mod-
ule. The ac coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 500
– 2400 mV (250 – 1200 mV single ended).
Table 1. Pin-out Table
The pin arrangement and definition of this product meets SFP MSA. Table 1 lists the pin description.
Pin
Name
Function/Description
Notes
1
VEET
Transmitter Ground
2
TX_FAULT
Transmitter Fault Indication
Note 1
3
TX_DISABLE
Transmitter Disable - Module disables on high or open
Note 2
4
MOD-DEF 2
Module Definition 2 - Two wire serial ID interface
Note 3
5
MOD-DEF 1
Module Definition 1 - Two wire serial ID interface
Note 3
6
MOD-DEF 0
Module Definition 0 - Grounded in module
Note 3
7
Rate Select
Not Connected
8
LOS
Loss of Signal
Note 4
9
VEER
Receiver Ground
Note 5
10
VEER
Receiver Ground
Note 5
11
VEER
Receiver Ground
Note 5
12
RD-
Inverse Received Data Out
Note 6
13
RD+
Received Data Out
Note 6
14
VEER
Receiver Ground
Note 5
15
VCCR
Receiver Power - 3.3 V ±5%
Note 7
16
VCCT
Transmitter Power - 3.3 V ±5%
Note 7
17
VEET
Transmitter Ground
Note 5
18
TD+
Transmitter Data In
Note 8
19
TD-
Inverse Transmitter Data In
Note 8
20
VEET
Transmitter Ground
Note 5
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