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What is 1340FBPC?

This electronic component, produced by the manufacturer "Agere Systems", performs the same function as "1340-Type Lightwave Receiver".


1340FBPC Datasheet PDF - Agere Systems

Part Number 1340FBPC
Description 1340-Type Lightwave Receiver
Manufacturers Agere Systems 
Logo Agere Systems Logo 


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Data Sheet
January 2000
1340-Type Lightwave Receiver
s CMOS (TTL) link-status flag output
s Operation at 1.3 µm or 1.55 µm wavelengths
s Operating case temperature range of
–40 °C to +85 °C
Applications
Operating at 1.1 µm through 1.6 µm wavelengths and at
155 Mbits/s, 622 Mbits/s, or 1.25 Gbits/s, the versatile
1340-Type Receiver is manufactured in a 20-pin, plastic DIP
with a multimode fiber pigtail.
s Telecommunications:
— Inter- and intraoffice SONET/ITU-T SDH
— Subscriber loop
— Metropolitan area networks
s High-speed data communications
Features
s Backward compatible with 1310 receiver family
s Space-saving, self-contained, 20-pin plastic DIP
s Silicon-based ICs
s Single 5 V power supply operation including photo-
current monitor capability
s Exceeds all SONET (GR-253-CORE) and ITU-T
G.958 jitter requirements
s Wide dynamic range
s Qualified to meet the intent of Telcordia Technolo-
gies * reliability practices
s Operates at data rates of 155 Mbits/s,
622 Mbits/s, or 1.25 Gbits/s
s Positive ECL (PECL) data outputs
Description
The 1340-Type receiver is designed for use in trans-
mission systems or medium- to high-speed data
communications applications at data rates up to
1.25 Gbits/s. Compact packaging, along with wide
dynamic range, makes these receivers ideal for both
telecommunications and data communications appli-
cations.
The following three versions of the receiver are avail-
able:
s SONET/SDH compliant with OC-3/STM-1
s SONET/SDH compliant with OC-12/STM-4
s 1.25 Gbits for data applications.
* Telcordia Technologies is a trademark of Telcordia Technologies,
Inc.

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1340FBPC equivalent
Data Sheet
January 2000
1340-Type Lightwave Receiver
Pin 10
Pin 10 on the 1340-Type receiver is a not internally
connected (NIC) pin. This definition allows the 1340 to
be used in most customer 20-pin receiver module
applications. Customer’s printed-wiring boards that are
designed with ground, +5V, –5V, or no connection to
this pin are all acceptable options. For those applica-
tions that require monitoring the photocurrent of the
PIN photodetector for power monitoring purposes,
there are versions of the 1340 that require +5 V or –5 V
applied to Pin 10. CheckTables 4 and 5 for ordering
information.
Recommended User Interface
The 1340 receiver is designed to be operated from a
5 V power supply and provides raised or pseudo-ECL
(PECL) data outputs. Figures 3 and 4 show two possi-
ble application circuits for the 1340 receiver. Figure 3
represents an application for the version with PECL
FLAG outputs while Figure 4 shows a possible applica-
tion for the version with the TTL-compatible FLAG
outputs.
In both instances, the DATA outputs are terminated with
a Thévenin equivalent circuit, which provides the equiv-
alent of a 50 load terminated to (VCC – 2 V).
A single 50 resistor terminated to (VCC – 2 V) could
also be used, but this requires a second power supply.
Other methods of terminating ECL-type outputs are
discussed in the references previously mentioned.
Figure 5 shows an example of a circuit that can be
used to interface the PECL outputs of the 1340 receiver
with a device which requires true, negative voltage ECL
inputs. The 100314 is an ECL line receiver and is
shown here only as an example to demonstrate this
coupling procedure. The DATA lines are terminated in a
50 equivalent impedance but are ac-coupled to the
100314. The capacitive coupling isolates and permits
level shifting of the positiveDATA outputs of the
receiver to the proper negative level required by the
inputs of the 100314. The VBB output of the 100314
provides the reference voltage required to center the
voltage swing of theDATA signals around the input
switching threshold of the 100314. The Thévenin
equivalent of the 166 and 250 resistor pair is
100 , which, in parallel with the 100 resistor con-
nected to VBB, results in a 50 equivalent impedance
for the load on each of the data lines. Alternatively, if
there is no VBB reference available, a second pair of
166 /250 resistor networks could be used on the
data lines on the 100314 side of the coupling capacitor.
+5.0 V
2.2 µF
0.1 µF
FLAG*
FLAG*
0.1 µF
82 • 82 •
124 •
124 •
FERRITE
BEAD
11
12 9
1340
14 7
0.1 µF
82 •
82 •
124 •
124 •
0.1 µF
DATA
DATA
* 50 to (VCC – 2)V.
† DATA and DATA are 50 impedance transmission lines; both lines can be ac- or dc-coupled into the next device.
‡ Fair-Rite Products Corporation part number 2743037447 or equivalent.
1-500(C).d
Note: All unused outputs must be terminated as shown. All resistors are 1/8 W, thin-film, ceramic chips. All capacitors are
25 Vdc, ceramic X7R, or equivalent.
Agere Systems Inc.
Figure 3. Interfacing to the 155 Mbits/s 1340 Receiver
5


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Featured Datasheets

Part NumberDescriptionMFRS
1340FBPCThe function is 1340-Type Lightwave Receiver. Agere SystemsAgere Systems
1340FBPCThe function is 1340-Type Lightwave Receiver. Agere SystemsAgere Systems

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