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HFCT-53D5 데이터시트 PDF




Avago에서 제조한 전자 부품 HFCT-53D5은 전자 산업 및 응용 분야에서
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부품번호 HFCT-53D5 기능
기능 1 x 9 Fiber Optic Transceivers
제조업체 Avago
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HFCT-53D5 데이터시트, 핀배열, 회로
HFBR-53D5 Family, 850 nm VCSEL
HFCT-53D5 Family, 1300 nm FP Laser
1 x 9 Fiber Optic Transceivers for Gigabit Ethernet
Data Sheet
Description
The HFBR/HFCT-53D5 transceiver from Avago
Technologies allows the system designer to implement
a range of solutions for multimode and single mode
Gigabit Ethernet applications.
The overall Avago Technologies transceiver product
consists of three sections: the transmitter and receiver
optical subassemblies, an electrical subassembly, and
the package housing which incorporates a duplex SC
connector receptacle.
Transmitter Section
The transmitter section of the HFBR-53D5 consists of
an 850 nm Vertical Cavity Surface Emitting Laser
(VCSEL) in an optical subassembly (OSA), which mates
to the fiber cable. The HFCT-53D5 incorporates a 1300
nm Fabry-Perot (FP) Laser designed to meet the Gigabit
Ethernet LX specification. The OSA is driven by a
custom, silicon bipolar IC which converts differential
PECL logic signals (ECL referenced to a +5 Volt supply)
into an analog laser diode drive current.
Receiver Section
The receiver of the HFBR-53D5 includes a silicon PIN
photodiode mounted together with a custom, silicon
bipolar transimpedance preamplifier IC in an OSA. This
OSA is mated to a custom silicon bipolar circuit that
provides post-amplification and quantization. The
HFCT-53D5 utilizes an InP PIN photodiode in the same
configuration. The post-amplifier also includes a Signal
Detect circuit which provides a PECL logic-high output
upon detection of a usable input optical signal level.
This singleended PECL output is designed to drive a
standard PECL input through a 50 W PECL load.
Features
Compliant with Specifications for IEEE- 802.3z
Gigabit Ethernet
Industry Standard Mezzanine Height 1 x 9 Package
Style with Integral Duplex SC Connector
Performance
HFBR-53D5:
220 m with 62.5/125 mm MMF
500 m with 50/125 mm MMF
HFCT-53D5:
550 m with 62.5/125 mm MMF
550 m with 50/125 mm MMF
10 km with 9/125 SMF
IEC 60825-1 Class 1/CDRH Class I Laser Eye Safe
Single +5 V Power Supply Operation with PECL
Logic Interfaces
Wave Solder and Aqueous Wash Process
Compatible
Related Products
Physical Layer ICs Available for Optical or Copper
Interface (HDMP-1636A/1646A)
Versions of this Transceiver Module Also Available
for Fibre Channel (HFBR/HFCT-53D3)
Gigabit Interface Converters (GBIC) for Gigabit
Ethernet (CX, SX, LX)
Applications
Switch to Switch Interface
Switched Backbone Applications
High Speed Interface for File Servers
High Performance Desktops




HFCT-53D5 pdf, 반도체, 판매, 대치품
10 km Link Support
As well as complying with the LX 5 km standard, the
HFCT-53D5 specification provides additional margin
allowing for a 10 km Gigabit Ethernet link on single
mode fiber. This is accomplished by limiting the
spectral width and center wavelength range of the
transmitter while increasing the output optical power
and improving sensitivity. All other LX cable plant
recommendations should be followed.
Data Line Interconnections
Avago Technologies’ HFBR/ HFCT-53D5 fiber-optic
transceiver is designed to directly couple to +5 V PECL
signals. The transmitter inputs are internally dc-coupled
to the laser driver circuit from the transmitter input
pins (pins 7, 8). There is no internal, capacitively-
coupled 50 Ohm termination resistance within the
transmitter input section. The transmitter driver circuit
for the laser light source is a dc-coupled circuit. This
circuit regulates the output optical power. The
regulated light output will maintain a constant output
optical power provided the data pattern is reasonably
balanced in duty factor. If the data duty factor has long,
continuous state times (low or high data duty factor),
then the output optical power will gradually change
its average output optical power level to its pre-set
value. As for the receiver section, it is internally ac-
coupled between the pre-amplifier and the
postamplifier stages. The actual Data and Data-bar
outputs of the postamplifier are dc-coupled to their
respective output pins (pins 2, 3). Signal Detect is a
single-ended, +5 V PECL output signal that is dc-
coupled to pin 4 of the module. Signal Detect should
not be ac-coupled externally to the follow-on circuits
because of its infrequent state changes. Caution should
be taken to account for the proper interconnection
between the supporting Physical Layer integrated
circuits and this HFBR/HFCT-53D5 transceiver. Figure 3
illustrates a recommended interface circuit for
interconnecting to a +5 Vdc PECL fiber-optic
transceiver.
Some fiber-optic transceiver suppliers’ modules include
internal capacitors, with or without 50 Ohm
termination, to couple their Data and Data-bar lines to
the I/O pins of their module. When designing to use
these type of transceivers along with Avago
Technologies transceivers, it is important that the
interface circuit can accommodate either internal or
external capacitive coupling with 50 Ohm termination
components for proper operation of both transceiver
designs. The internal dc-coupled design of the HFBR/
HFCT-53D5 I/O connections was done to provide the
designer with the most flexibility for interfacing to
various types of circuits.
Eye Safety Circuit
For an optical transmitter device to be eye-safe in the
event of a single fault failure, the transmitter must either
maintain normal, eye-safe operation or be disabled. In
the HFBR-53D5 there are three key elements to the
laser driver safety circuitry: a monitor diode, a window
detector circuit, and direct control of the laser bias.
The window detection circuit monitors the average
optical power using the monitor diode. If a fault occurs
such that the transmitter DC regulation circuit cannot
maintain the preset bias conditions for the laser emitter
within ± 20%, the transmitter will automatically be
disabled. Once this has occurred, only an electrical
power reset will allow an attempted turn-on of the
transmitter.
The HFCT-53D5 utilizes an integral fiber stub along with
a current limiting circuit to guarantee eye-safety. It is
intrinsically eye safe and does not require shut down
circuitry.
Signal Detect
The Signal Detect circuit provides a deasserted output
signal that implies the link is open or the transmitter is
OFF as defined by the Gigabit Ethernet specification
IEEE 802.3z, Table 38.1. The Signal Detect threshold is
set to transition from a high to low state between the
minimum receiver input optional power and –30 dBm
avg. input optical power indicating a definite optical
fault (e.g. unplugged connector for the receiver or
transmitter, broken fiber, or failed far-end transmitter
or data source). A Signal Detect indicating a working
link is functional when receiving encoded 8B/10B
characters. The Signal Detect does not detect receiver
data error or error-rate. Data errors are determined by
Signal processing following the transceiver.
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HFCT-53D5 전자부품, 판매, 대치품
HFBR-53D5 Family, 850 nm VCSEL
Transmitter Electrical Characteristics
(TA = 0°C to +70°C, VCC = 4.75 V to 5.25 V)
Parameter
Symbol
Supply Current
Power Dissipation
Data Input Current - Low
ICCT
PDIST
IIL
Data Input Current - High
IIH
Laser Reset Voltage
VCCT-reset
Min.
-350
Typ. Max.
85 120
0.45 0.63
0
16 350
2.7 2.5
Unit Reference
mA
W
µA
µA
V1
Receiver Electrical Characteristics
(TA = 0°C to +70°C, VCC = 4.75 V to 5.25 V)
Parameter
Symbol
Min.
Typ. Max.
Unit Reference
Supply Current
Power Dissipation
Data Output Voltage - Low
Data Output Voltage - High
Data Output Rise Time
Data Output Fall Time
Signal Detect Output Voltage - Low
Signal Detect Output Voltage - High
ICCR
PDISR
VOL - VCC
VOH - VCC
tT
tf
VOL - VCC
VOH - VCC
-1.950
-1.045
-1.950
-1.045
105 130
mA
0.53 0.63
W2
-1.620
V
3
-0.740
V
3
0.40 ns 4
0.40 ns 4
-1.620
V
3
-0.740
V
3
Notes:
1. The Laser Reset Voltage is the voltage level below which the VCCT voltage must be lowered to cause the laser driver circuit to reset from
an electrical/optical shutdown condition to a proper electrical/optical operating condition. The maximum value corresponds to the worst-
case highest VCC voltage necessary to cause a reset condition to occur. The laser safety shutdown circuit will operate properly with
transmitter VCC levels of 3.5 Vdc £ VCC £ 7.0 Vdc.
2. Power dissipation value is the power dissipated in the receiver itself. It is calculated as the sum of the products of VCC and ICC minus the
sum of the products of the output voltages and currents.
3. These outputs are compatible with 10 K, 10 KH, and 100 K ECL and PECL inputs.
4. These are 20-80% values.
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관련 데이터시트

부품번호상세설명 및 기능제조사
HFCT-53D5

1 x 9 Fiber Optic Transceivers

Avago
Avago

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