HFBR-0564 Avago Technologies US Inc., HFBR-0564 Datasheet - Page 6

• Manufacturer Part Number: HFBR-0564
• Description: Fiber Optics, Evaluation Kit
• Manufacturer: Avago Technologies US Inc.

Specifications of HFBR-0564

• Silicon Manufacturer: Avago
• Silicon Core Number: HFBR-591xE
• Kit Application Type: Communication & Networking
• Application Sub Type: MT-RJ Gigabit Ethernet Transceiver
• Main Purpose: Interface, Ethernet
• Embedded: No
• Utilized Ic / Part: HFCT-591xE, HFBR-591xE
• Primary Attributes: MT-RJ Gigabit, Multimode and Singlemode Applications
• Secondary Attributes: MT-RJ Fiber Connector Interface
• Operating Voltage: 3.3 V
• Description/function: Fiber Optic Kit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: HFBR-591x, HFCT-591
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

6
Board Layout Considerations
The partners in the MT-RJ alliance
have agreed that all SFF transceiver
products will have the same physical
PCB footprint and connector panel
opening as documented in the
Multi-Source Agreement (MSA). The
MSA does not define all SFF physical
parameters, such as the overall
length, in order to give the partners
latitude in their designs. For this
reason, exactly what parameters
are defined by the MSA will be em-
phasized in the text reviewing the
Avago SFF dimensions. Note that the
MSA does not require shield ground
tabs on SFF products even though
the MSA includes ground pads on
the recommended PCB layout. The
shield grounding differences in the
various Avago SFF products will be
discussed during the presentation
of both the PCB layout and panel
opening drawings. Also described
are elements not controlled by
the MSA such as the SFF housing
material and color.
Shown in Figure 6 is the multimode
2 x 5 SFF 1.25 Gb: HFBR-5912E trans-
ceiver. The metal housing includes
ground tabs that are connected
to signal ground via the recom-
mended PCB layout. The metal nose
shield over the MT-RJ connector is
connected to chassis ground via the
spring contact fingers. The two front
standoffs are un-metallized. The two
rear standoffs are metallized and
connected to signal ground. The
metal nose shield and metal housing
are electrically isolated from each
other.
Shown in Figure 7 is the single mode
2 x 5 SFF 1.25 Gb/s HFCT-5912E trans-
ceiver. Similar to the HFBR-5912E,
these transceivers also have ground
tabs on the metal housing shield,
spring contact fingers on the metal
nose shield and electrical isolation
between these shields. Ground tabs
must be connected to signal ground
for optimum performance of the
transceiver. The two front standoffs
are metallized and at chassis ground.
The two rear standoffs are at signal
ground.
Figure 7. HFCT-5912E 2 x 5 1.25 Gb/s single mode SFF
Figure 6. HFBR-5912E 2 x 5 1.25 Gb multimode SFF