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參數(shù)資料
| 型號： | R480WPBB |
| 英文描述： | R480-Type Lightwave Receiver with CML Data Output for up to 2.488 Gbits/s Applications |
| 中文描述： | R480 -高達2.488磁錄密度型光波接收機CML數(shù)據(jù)輸出/ s應用 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 76K |
| 代理商： | R480WPBB |
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Agere Systems Inc.
R480-Type Lightwave Receiver with CML Data Output
for up to 2.488 Gbits/s Applications
Data Sheet, Rev. 1
September 2001
Flag Output
When the incoming optical signal falls below the link-
status switching threshold, the FLAG output is asserted
and the FLAG output logic level changes from a TTL
low to a TTL high.
Pin Information
Table 1. Pin Information
* Pins labeled NIC have no internal connection.
Pins designated as no user connect (NUC) are connected inter-
nally. The user should not make any connections to these pins.
The loss of signal (LOS) FLAG output is a logic level that indicates
the presence or absence of a minimum acceptable level of optical
input. A TTL logic HIGH indicates the absence of a valid optical
input signal.
§ Analog optical input level voltage (OILV) is proportional to the opti-
cal input power.
Handling Precautions
The R480-Type receiver is manufactured with a
39 in.
±
4 in. (100 cm
±
10 cm) single-mode or multi-
mode fiber pigtail. SC, FC/PC, LC, and MU connectors
are offered on standard versions. Other optical connec-
tor options are available on special order. Please con-
tact an Agere Systems’ Account Manager for
availability and ordering information.
The minimum fiber bending radius is 1.5 inches
(38 mm).
Receiver Processing
The R480-Type receiver devices can withstand normal
wave-soldering processes. The complete receiver
module is not hermetically sealed; therefore, it should
not be immersed in, or sprayed with, any solutions. The
optical connector process cap deformation temperature
is 85
°
C. The receiver pins can be wave soldered at
250
°
C for 10 seconds.
Electrostatic Discharge
CAUTION: This device is susceptible to damage as
a result of electrostatic discharge (ESD).
Take proper precautions during both
handling and testing. Follow guidelines
such as JEDEC Publication No. 108-A
(Dec. 1988).
Although protection circuitry is designed into the
device, take proper precautions to avoid exposure to
ESD.
Agere Systems employs a human-body model (HBM)
for ESD-susceptibility testing and protection design
evaluation. ESD voltage thresholds are dependent on
the critical parameters used to define the model. A
standard HBM (resistance = 1.5 k
, capacitance =
100 pF) is widely used and, therefore, can be used for
comparison purposes.
Installation Considerations
Although the receiver has been designed with rugged-
ness in mind, care should be used during handling.
The optical connector should be kept free from dust.
The optical connector process cap should be kept in
place as a dust cover when the device is not connected
to a cable. If contamination is present on the optical
connector, the use of canned air with a extension tube
should remove any loose debris. Other cleaning proce-
dures are outlined in the Cleaning Fiber Optic Assem-
bliesTechnical Note (TN95-010LWP).
The cable should be handled conservatively, with no
excessive axial pulling or lateral tugging.
Pin
Name
Pin
Name
1
2
3
4
5
6
7
8
9
10
11
12
NIC*
NUC
LOS Flag
Ground
NIC*
NIC*
Ground
V
CC
Ground
DATA
DATA
Ground
24
23
22
21
20
19
18
17
16
15
14
13
NUC
OILV
§
V
CC
NUC
Ground
Ground
NIC*
Ground
Ground
Ground
Ground
NIC*
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