Agilent HFBR-5905/5905A
ATM Multimode Fiber Transceivers
in 2 x 5 Package Style
Data Sheet
Features
• Multisourced 2 x 5 package style
with MT-RJ receptacle
• Single +3.3 V power supply
• Wave solder and aqueous wash
process compatibility
• Manufactured in an ISO 9002
certified facility
• Full compliance with ATM Forum
UNI SONET OC-3 multimode fiber
physical layer specification
Applications
• Multimode fiber ATM backbone
links
• Multimode fiber ATM wiring
closet to desktop links
Ordering Information
The HFBR-5905 1300 nm
product is available for
production orders through the
Agilent Component Field Sales
Offices and Authorized
Distributors world wide.
HFBR-5905 = 0°C to +70°C
HFBR-5905A = -40°C to +85°C.
Description
The HFBR-5900 family of trans-
ceivers from Agilent provide the
system designer with products
to implement a range of
solutions for multimode fiber
SONET OC-3 (SDH STM-1)
physical layers for ATM and
other services.
These transceivers are all
supplied in the new industry
standard 2 x 5 DIP style with a
MT-RJ fiber connector interface.
ATM 2 km Backbone Links
The HFBR-5905 is a 1300 nm
product with optical
performance compliant with the
SONET STS-3c (OC-3) Physical
Layer Interface Specification.
This physical layer is defined in
the ATM Forum User-Network
Interface (UNI) Specification
Version 3.0. This document
references the ANSI T1E1.2
specification for the details of
the interface for 2 km multimode
fiber backbone links.
The ATM 100 Mb/s-125 MBd
Physical Layer interface is best
implemented with the HFBR-
5903 family of FDDI Transceiv-
ers which are specified for use
in this 4B/5B encoded physical
layer per the FDDI PMD
standard.
Transmitter Sections
The transmitter section of the
HFBR-5905 utilizes a 1300 nm
InGaAsP LED. This LED is
packaged in the optical
subassembly portion of the
transmitter section. It is driven
by a custom silicon IC which
converts differential PECL logic
signals, ECL referenced (shifted)
to a +3.3 V supply, into an
analog LED drive current.
Receiver Sections
The receiver section of the
HFBR-5905 utilizes an InGaAs
PIN photodiode coupled to a
custom silicon transimpedance
preamplifier IC. It is packaged in
the optical subassembly portion
of the receiver.
This PIN/preamplifier combina-
tion is coupled to a custom
quantizer IC which provides the
final pulse shaping for the logic
output and the Signal Detect
function. The Data output is
differential. The Signal Detect
output is single-ended. Both
Data and Signal Detect outputs
are PECL compatible, ECL
referenced (shifted) to a 3.3 V
power supply. The receiver
outputs, Data Out and Data Out
Bar, are squelched at Signal
Detect Deassert. That is, when
the light input power decreases
to a typical -38 dBm or less, the
Signal Detect Deasserts, i.e. the
Signal Detect output goes to a
PECL low state. This forces the
receiver outputs, Data Out and
Data Out Bar to go to steady
PECL levels High and Low
respectively.
HP [ AGILENT(HEWLETT-PACKARD) ]
