Page 1
Direct Attach 4X and 12X
- Greater Bandwidth with <1% Crosstalk -
High Speed, Serial I/O, Cable Assemblies
Product Bulletin No. 10-25-03
Meritec is now offering a new line of cable
assemblies to support InfiniBand™ (IB)
architecture specifications and other industry
standards for high-speed data transfer
applications to include 10G Fibre Channel,
12X Straight
All Shown with
Optional
“Pull-to-Release”
Latch Actuator
4X Straight
4X Angled
Serial ATA (SATA), and Serial Attached SCSI
(SAS), 10G Ethernet, and CX4.
Meritec’s new offering is designed to support
channel-based switched fabric I/O technology
and industry standards for continuous flow
“serial” link computing. The assembly
provides for the continuous uninterrupted flow
of serial data.
Meritec’s Direct Attach 4X** cable assembly meets IB™ standards by allowing for high-speed data rate
transfers of >2.5Gbps per each link/channel at lengths up to 8.5 meters 24 AWG not equalized and meets
CX4 standards up to 16 meters. Direct attach methodology offers cross-talk performance of <1.0%* which
has been difficult to achieve in 4X designs utilizing internal printed circuit boards for wire termination.
Greater bandwidth and exceptional overall electrical performance are also favorable byproducts of the
design.
Meritec’s Direct Attach 12X*** cable assembly meets IB™ standards by allowing for high-speed data rate
transfers of >2.5Gbps per each link/channel at lengths up to 8.5 meters 24 AWG not equalized and meets
CX4 standards up to 16 meters. Direct attach methodology offers cross-talk performance of <1.0%* which
has been difficult to achieve in 12X designs utilizing internal printed circuit boards for wire termination.
Greater bandwidth and exceptional overall electrical performance are also favorable byproducts of the
design. The use of three lengths of 4X cable provides greater flexibility than does one bundled 12X cable.
Passive Equalization - Both Meritec’s Direct Attach 4X and Direct Attach 12X are offered with passive
equalization circuits built into the connectors back-shells to achieve higher data rate transfers (>2.5Gbps)
and/or longer cable assembly lengths (equalized IB™ 12.5 meters, 24 AWG).
The connector interface utilized in the Direct Attach series of cable assemblies has been selected by the
various standards organizations responsible for InfiniBand™, 10G Fiber Channel, SATA, Serial Attached
SCSI (SAS) and 10G Ethernet.
* <1% nearest neighbor and <2% multiple aggressors
** 4X is 10Gbps bi-directional typically usable data rate transfer.
*** 12X is 30Gbps bi-directional typically usable data rate transfer.
For more information on Meritec’s products, please contact Customer Service at 1-888-MERITEC (637-4832).
MERITEC
• 1359 WEST JACKSON STREET • POST OFFICE BOX 8003 • PAINESVILLE, OHIO 44077
Page 2
Direct Attach 4X and 12X
- Greater Bandwidth with <1% Crosstalk -
High Speed, Serial I/O, Cable Assemblies
Features and Benefits
• 4X assemblies standard offering is with 24-26-28 AWG cable. Other cable offerings are
available.
•12X assemblies standard offering is with 24-26-28 AWG cable. Other cable offerings are
available.
•Direct Attach terminations provide optimized performance by removing unnecessary
transitions in the signal path.
•>2.5Gbps per channel-based Link.
•Passive equalization circuits available built into the termination; per pair option.
•Die-Cast back-shells for mechanical integrity and enhanced EMI shielding performance.
•Innovative "Pull-to-Release" latch mechanism that is friendly, reliable, and compact.
•Thumbscrew version soon to be available.
Markets Served Applications
•Communications
•10G Ethernet, CX4...3.125G/Lane
•10G ATM, Sonet
•Computer and Storage
•10G Fiber Channel........3.187G/Lane
•InfiniBand™...................2.5, 5.0G/Lane
•PCI Express..................2.5, 5.0G/Lane
•Serial ATA.....................3.0G/Lane
•Serial Attached SCSI....3.0G/Lane
•XAUI Applications.........3.2G/Lane
•Parallel Rapid I/O....…..3.2G/Lane
•Proprietary I/O Interfaces, i.e. Rocket
I/O, etc.
• Chipset Design
•Computers
•Failover Jumpers
•High-End Single User Links
•Internet Equipment
•Routers
•Serial Aggregation Links
•Serial Trunk Links
•Servers
•Storage Equipment
•Switches
•Switch Up Link
•Systems Backbones
For more information on Meritec’s products, please contact Customer Service at 1-888-MERITEC (637-4832).
MERITEC
• 1359 WEST JACKSON STREET • POST OFFICE BOX 8003 • PAINESVILLE, OHIO 44077
Page 3
Direct Attach 4X and 12X
- Greater Bandwidth with <1% Crosstalk -
High Speed, Serial I/O, Cable Assemblies
Technical Features
Materials Mechanical Performance
• Contact Mating Area - Cu Alloy w/Au
• Contact Bonding Area - Cu Alloy
• Connector Housing - High Temp
Thermoplastic UL94V-0
• Backshell - Zinc Die Cast
• Strain Relief - Thermoplastic Collar
• Latch Mechanism - Thermoplastic & Cu
Alloy
• Cable - Fully Shielded 8 Differential Pairs,
Twinax
Environmental
• Temperature Range: Between -10º to 60º C
• Thermal Shock: 10 Cycles -55º to 85º C
• Temperature Life: 456 hours @ 90º C
Specifications
• Insertion Force = 30N (6.6 lbs.) max
• Withdrawal Force = 15N (3.3 lbs.) max
• Retention Force = 75N (16.9 lbs.) min
• Durability = 250 cycles
• Min Bend Radius = 2 inch @ 90 degree bend
Electrical Performance
• Differential Impedance - 100 ±10 Ω @
100psec
• Near End Crosstalk = <2% @ 100psec (multiple
aggressors)
• Cable Assy Insertion Loss = <5dB @ 1.25GHz
(5 meters 26AWG)
• Connector Bandwidth = 3dB @ 8GHz
• Jitter < 0.125 unit intervals (50psec) @2.5Gbps
(5 meters 26AWG)
• Eye Pattern Opening = 350psec width min and
500 mV height min @ 2.5Gbps (5 meters
26AWG)
• Industry
• InfiniBand™ Architecture
• Small Form Factor (SFF) 8470
• 10G FibreChannel
• IEEE 802.3ak
• 10G SAS, NCITS-376
For more information on Meritec’s products, please contact Customer Service at 1-888-MERITEC (637-4832).
MERITEC
• 1359 WEST JACKSON STREET • POST OFFICE BOX 8003 • PAINESVILLE, OHIO 44077
Approvals & Certifications
• UL and CSA approval pending
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