HFBR-5921L/HFBR-5923L
Fibre Channel 2.125/1.0625 GBd 850 nm
Small Form Factor Pin Through Hole (PTH)
Low Voltage (3.3 V) Optical Transceiver
Data Sheet
Description
The HFBR-5921L/5923L optical transceivers from Avago
Technologies offer maximum flexibility to Fibre Channel
designers, manufacturers, and system integrators to
implement a range of solutions for multi-mode Fibre
Channel applications. This product is fully compliant with
all equipment meeting the Fibre Channel FC-PI 200-M5-
SN-I and 200-M6-SN-I 2.125 GBd specifications, and is
compatible with the Fibre Channel FC-PI 100-M5-SN-I,
FC-PI 100-M6-SN-I, FC-PH2 100-M5-SN-I, and FC-PH2 100-
M6-SN-I 1.0625 GBd specifications. The HFBR-5921L/5923L
is also compliant with the SFF Multi Source Agreement
(MSA).
Features
•
Compliant with 2.125 GBd Fibre Channel FC-PI standard
– FC-PI 200-M5-SN-I for 50/125
mm
multimode cables
– FC-PI 200-M6-SN-I for 62.5/125
mm
multimode
cables
•
Compliant with 1.0625 GBd VCSEL operation for both
50/125 and 62.5/125
mm
multimode cables
•
Industry standard Pin Through Hole (PTH) package
•
LC-duplex connector optical interface
•
Link lengths at 2.125 GBd:
– 0.5 to 300 m – 50/125
mm
MMF
– 0.5 to 150 m – 62.5/125
mm
MMF
•
Link lengths at 1.0625 GBd:
– 0.5 to 500 m – 50/125
mm
MMF
– 0.5 to 300 m – 62.5/125
mm
MMF
•
Reliable 850 nm Vertical Cavity Surface Emitting Laser
(VCSEL) source technology
•
Laser AEL Class I (eye safe) per:
– US 21 CFR (J)
– EN 60825-1 (+All)
•
Single +3.3 V power supply operation
•
2 x 5 or 2 x 6 DIP package style with LC-duplex fiber
•
Wave solder and aqueous wash process compatible
Module Package
Avago offers the industry two Pin Through Hole package
options utilizing an integral LC-Duplex optical interface
connector. Both transceivers use a reliable 850 nm VCSEL
source and requires a 3.3 V DC power supply for optimal
system design.
Related Products
•
HFBR-5602: 850 nm + 5 V Gigabit Interface Converter
(GBIC) for Fiber Channel FC-PH-2
•
HFBR-53D3: 850 nm + 5 V 1 x 9 Laser transceiver for
Fiber Channel FC-PH-2
•
HFBR-5910E: 850 nm + 3.3 V SFF MTRJ Laser transceiver
for Fibre Channel FC-PH-2
•
HDMP-2630/2631: 2.125/1.0625 Gbps TRx family of
SerDes IC
•
HFBR-5720L: 850 nm 3.3 V 2.125/1.0625 Gbps SFP
Transceiver
Applications
•
Mass storage system I/O
•
Computer system I/O
•
High speed peripheral interface
•
High speed switching systems
•
Host adapter I/O
•
RAID cabinets
Patent -
www.avagotech.com/patents
HFBR-5721/23 BLOCK DIAGRAM
RECEIVER
LIGHT FROM FIBER
PHOTO-DETECTOR
AMPLIFICATION
& QUANTIZATION
ELECTRICAL INTERFACE
RD+ (RECEIVE DATA)
RD– (RECEIVE DATA)
SIGNAL DETECT
OPTICAL INTERFACE
TRANSMITTER
LIGHT TO FIBER
VCSEL
LASER
DRIVER &
SAFETY
CIRCUITRY
Tx_DISABLE
TD+ (TRANSMIT DATA)
TD– (TRANSMIT DATA)
Tx_FAULT
(AVAILABLE ONLY ON 2 X 6)
Figure 1. Transceiver functional diagram.
See Table 5 for Process Compatibility Specifications.
Module Diagrams
Figure 1 illustrates the major functional components of
the HFBR-5921/5923. The connection diagram for both
modules are shown in Figure 2. Figure 7 depicts the
external configuration and dimensions of the module.
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
9
10
A
B
NAME
Rx GROUND
Rx POWER
Rx SD
Rx DATE BAR
Rx DATE
Tx POWER
Tx GROUND
Tx DISABLE
Tx DATE
Tx DATE BAR
N/C
(2 X 6 ONLY)
Tx FAULT
(2 X 6 ONLY)
TYPE
GROUND
POWER
STATUS OUT
SIGNAL OUT
SIGNAL OUT
POWER
GROUND
CONTROL IN
SIGNAL IN
SIGNAL IN
NOT
CONNECTED
STATUS OUT
Installation
The HFBR-5921L/5923L can be installed in any MSA-com-
pliant Pin Through Hole port. The module Pin Description
is shown in Figure 2.
Solder and Wash Process Capability
These transceivers are delivered with protective process
plugs inserted into the LC connector receptacle. This
process plug protects the optical subassemblies during
wave solder and aqueous wash processing and acts as a
dust cover during shipping. These transceivers are compat-
ible with industry standard wave or hand solder processes.
Recommended Solder Fluxes
Solder fluxes used with the HFBR-5921L/5923L should be
water-soluble, organic fluxes. Recommended solder fluxes
include Lonco 3355-11 from London Chemical West, Inc.
of Burbank, CA, and 100 Flux from Alpha-Metals of Jersey
City, NJ.
Figure 2. Module pin assignments and pin configuration.
Recommended Cleaning/Degreasing Chemicals
Alcohols:
methyl, isopropyl, isobutyl.
Aliphatics:
hexane, heptane.
Other:
naphtha. Do not use partially halogenated hydrocar-
bons such as 1,1.1 trichoroethane or ketones such as MEK,
acetone, chloroform, ethyl acetate, methylene dichloride,
phenol, methylene chloride, or N-methylpyrolldone.
Also,
Avago does not recommend the use of cleaners that use
halogenated hydrocarbons because of their potential
environmental harm.
2
Transmitter Section
The transmitter section includes the transmitter optical
subassembly (TOSA) and laser driver circuitry. The TOSA,
containing an 850 nm VCSEL (Vertical Cavity Surface
Emitting Laser) light source, is located at the optical
interface and mates with the LC optical connector. The
TOSA is driven by a custom silicon IC, which converts
differential logic signals into an analog laser diode drive
current. This TX driver circuit regulates the optical power
at a constant level provided the data pattern is valid
8B/10B DC balanced code.
Receiver Section
The receiver section includes the receiver optical subas-
sembly (ROSA) and amplification/quantization circuitry.
The ROSA, containing a PIN photodiode and custom
transimpedance preamplifier, is located at the optical
interface and mates with the LC optical connector. The
ROSA is mated to a custom IC that provides post-amplifi-
cation and quantization. This circuit also includes a Signal
Detect (SD) circuit which provides an LVTTLcompatible
logic low output in the absence of a usable input optical
signal level.
TX Disable
The HFBR-5921L/5923L accepts a transmit disable control
signal input which shuts down the transmitter. A high
signal implements this function while a low signal allows
normal laser operation. In the event of a fault (e.g., eye
safety circuit activated), cycling this control signal resets
the module. The TX Disable control should be actuated
upon initialization of the module. See Figure 6 for product
timing diagrams.
Signal Detect
The Signal Detect (SD) output indicates if the optical input
signal to the receiver does not meet the minimum detect-
able level for Fibre Channel compliant signals. When SD is
low it indicates loss of signal. When SD is high it indicates
normal operation. The Signal Detect thresholds are set
to indicate a definite optical fault has occurred (e.g., dis-
connected or broken fiber connection to receiver, failed
transmitter).
TX Fault (Available only on the 2 x 6)
The HFBR-5923L module features a transmit fault control
signal output which when high indicates a laser transmit
fault has occurred and when low indicates normal laser
operation. A transmitter fault condition can be caused
by deviations from the recommended module operating
conditions or by violation of eye safety conditions. A
transient fault can be cleared by cycling the TX Disable
control input.
Functional Data I/O
Avago’s HFBR-5921L/5923L fiber-optic transceiver is
designed to accept industry standard differential signals.
In order to reduce the number of passive components
required on the customer’s board, Avago has included the
functionality of the transmitter bias resistors and coupling
capacitors within the fiber optic module. The transceiver
is compatible with an “AC-coupled” configuration and
is internally terminated. Figure 1 depicts the functional
diagram of the HFBR- 5921/5923.
Caution should be taken to account for the proper inter-
connection between the supporting Physical Layer
integrated circuits and the HFBR-5921L/5923L. Figure 4
illustrates the recommended interface circuit.
Eye Safety Circuit
For an optical transmitter device to be eye-safe in the
event of a single fault failure, the transmitter will either
maintain normal, eye-safe operation or be disabled. In the
event of an eye safety fault, the VCSEL will be disabled.
1.3
NORMALIZED AMPLITUDE
1.0
0.8
0.5
0.2
0
-0.2
0
x1
0.4
0.6 1-x1 1.0
NORMALIZED TIME (IN UI)
Figure 3. Transmitter eye mask diagram and typical transmitter eye.
3
Application Support
Evaluation Kit
To help you in your preliminary transceiver evaluation,
Avago offers a 2.125 GBd Fibre Channel evaluation board.
This board will allow testing of the HFBR-5921L/5923L
optical transceivers. Please contact your local field sales
representative for availability and ordering details.
Electrostatic Discharge (ESD)
There are two conditions in which immunity to ESD
damage is important. Table 1 documents our immunity
to both of these conditions. The first condition is during
handling of the transceiver prior to attachment to the
PCB. To protect the transceiver, it is important to use
normal ESD handling precautions. These precautions
include using grounded wrist straps, work benches, and
floor mats in ESD controlled areas. The ESD sensitivity of
the HFBR-5921L/5923L is compatible with typical industry
production environments. The second condition is static
discharges to the exterior of the host equipment chassis
after installation. To the extent that the duplex LC optical
interface is exposed to the outside of the host equipment
chassis, it may be subject to system-level ESD require-
ments. The ESD performance of the HFBR-5921L/5923L
exceeds typical industry standards.
Reference Designs
Reference designs for the HFBR-5921L/5923L fiber-optic
transceiver and the HDMP-2630/2631 physical layer IC are
available to assist the equipment designer. Figure 4 depicts
a typical application configuration, while Figure 5 depicts
the multisourced power supply filter circuit design. All
artwork is available at the Avago electronic bulletin board.
Please contact your local field sales engineer for more
information regarding application tools.
Regulatory Compliance
See Table 1 for transceiver Regulatory Compliance perfor-
mance. The overall equipment design will determine the
certification level. The transceiver performance is offered
as a figure of merit to assist the designer.
Immunity
Equipment hosting the HFBR-5921L/5923L modules
will be subjected to radio-frequency electromagnetic
fields in some environments. The transceivers have good
immunity to such fields due to their shielded design.
Table 1. Regulator Compliance
Feature
Electrostatic Discharge (ESD)
to the Electrical Pins
Electrostatic Discharge (ESD)
to the Duplex LC Receptacle
Electromagnetic Interference
(EMI)
Test Method
MIL-STD-883C Method 3015.4
Variation of IEC 61000-4-2
Performance
Class 2 (> 2000 V)
Typically withstand at least 25 kV without damage when
the duplex LC connector receptacle is contacted by a
Human Body Model probe.
System margins are dependant on customer board and
chassis design.
FCC Class B
CENELEC CEN55022 Class B
(CISPR 22A)
VCCI Class 1
Variation of IEC 61000-4-3
Immunity
Typically shows a negligible effect from a 10 V/m field swept
from 80 to 1000 MHz applied to the transceiver without a
chassis enclosure.
CDRH File # 9720151-13
TUV File # E9971086.06
1
UL File # E173874
Eye Safety
US FDA CDRH AEL Class 1
EN (IEC) 60825-1, 2,
EN 60950 Class 1
Underwriters Laboratories and
Canadian Standards Association
Joint Component Recognition
for Information Technology
Equipment Including Electrical
Business Equipment
Component Recognition
Note:
1. Changes to IEC 60825-1,2 are currently anticipated to allow higher eye-safe Optical Output Power levels. Agilent may choose to take advantageof
these changes at a later date.
4
Electromagnetic Interference (EMI)
Most equipment designs utilizing these high-speed trans-
ceivers from Avago Technologies will be required to meet
the requirements of FCC in the United States, CENELEC
EN55022 (CISPR 22) in Europe and VCCI in Japan. The metal
housing and shielded design of the HFBR-5921L/5923L
minimize the EMI challenge facing the host equipment
designer. These transceivers provide superior EMI perfor-
mance. This greatly assists the designer in the manage-
ment of the overall system EMI performance.
Caution
There are no user serviceable parts nor is any mainte-
nance required for the HFBR-5921/5923. All adjustments
are made at the factory before shipment to our customers.
Tampering with or modifying the performance of the
HFBR-5921L/5923L will result in voided product warranty.
It may also result in improper operation of the HFBR-
5921L/5923L circuitry, and possible overstress of the laser
source. Device degradation or product failure may result.
Connection of the HFBR-5921L/5923L to a nonapproved
optical source, operating above the recommended
absolute maximum conditions or operating the HFBR-
5921L/5923L in a manner inconsistent with its design
and function may result in hazardous radiation exposure
and may be considered an act of modifying or manu-
facturing a laser product. The person(s) performing such
an act is required by law to re-certify and re-identify
the laser product under the provisions of U.S. 21 CFR
(Subchapter J) and the TUV.
Eye Safety
These 850 nm VCSEL-based transceivers provide Class 1
eye safety by design. Avago Technologies has tested the
transceiver design for compliance with the requirements
listed in Table 1: Regulatory Compliance, under normal
operating conditions and under a single fault condition.
Flammability
The HFBR-5921L/5923L VCSEL transceiver housing is
made of metal and high strength, heat resistant, chemi-
cally resistant, and UL 94V-0 flame retardant plastic.
Ordering Information
Please contact your local field sales engineer or one of
Avago Technologies franchised distributors for ordering
information. For technical information regarding this
product, including the MSA, please visit Avago Technolo-
gies Website at www.avagotech.com/
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