Features Up to 6.384 Gbps throughput 66MHz to 133MHz input clock support Reduces cable and connector size and cost Cable Deskew function DC balance reduces ISI distortion For point-to-point backplane or cable applications Low power, 890 mW typ at 133MHz Flow through pinout for easy PCB design +3.3V supply voltage 100-pin TQFP package Conforms to TIA/EIA-644-A-2001 LVDS Standard Description The DS90CR486 receiver converts eight Low Voltage Differential Signaling (LVDS) data streams back into 48 bits of LVCMOS/LVTTL data. Using a 133MHz clock, the data throughput is 6.384Gbit/s (798Mbytes/s). The multiplexing of data lines provides a substantial cable reduction. Long distance parallel single-ended buses typically require a ground wire per active signal (and have very limited noise rejection capability). Thus, for a 48-bit wide data and one clock, up to 98 conductors are required. With this Channel Link chipset as few as 19 conductors (8 data pairs, 1 clock pair and a minimum of one ground) are needed. This provides an 80% reduction in interconnect width, which provides a system cost savings, reduces connector physical size and cost, and reduces shielding requirements due to the cables' smaller form factor. The DS90CR486 deserializer is improved over prior generations of Channel Link devices and offers higher bandwidth support and longer cable drive with three areas of enhancement. To increase bandwidth, the maximum clock rate is increased to 133 MHz and 8 serialized LVDS outputs are provided. Cable drive is enhanced with a user selectable pre-emphasis (on DS90CR485) feature that provides additional output current during transitions to counteract cable loading effects. Optional DC balancing on a cycle-to-cycle basis, is also provided to reduce ISI (Inter-Symbol Interference). With pre-emphasis and DC balancing, a low distortion eye-pattern is provided at the receiver end of the cable. A cable deskew capability has been added to deskew long cables of pair-to-pair skew. These three enhancements allow long cables to be driven. The DS90CR486 is intended to be used with the DS90CR485 Channel Link Serializer. It is also backward compatible with serializers DS90CR481 and DS90CR483. The DS90CR486 is footprint compatible with the DS90CR484. The chipset is an ideal solution to solve EMI and interconnect size problems for high-throughput point-to-point applications. For more details, please refer to the “Applications Information” section of this datasheet.

Also Recommended DS90CR485▲ 133Mhz LVDS 48-Bit Channel Link Serializer

	Block Diagram click for larger image

Parameters / Values	DS90CR486	DS90CR485
Function	Deserializer	Serializer
Total Throughput	6384 Mbps	6384 Mbps
Payload/Channel	798 Mbps	798 Mbps
Clock Min	66 MHz	66 MHz
Clock Max	133 MHz	133 MHz
Input Compatibility	LVDS	LVTTL
Output Compatibility	LVTTL	LVDS
Power Consumption_	439 mW	585 mW
SupplyVoltage	3.3 Volt	2.5 Volt
Eval Kit	CLINK3V48BT-133	CLINK3V48BT-133
ESD	2 kV	2 kV
Temperature Min	-10 deg C	-10 deg C
Temperature Max	70 deg C	70 deg C
Compression Ratio	48:8	48:8
Number Receivers	1
Sensing & Imaging	Yes	Yes
Parallel Bus Width	48 bits	48 bits

Datasheets

Title		Size	Date	Other Language
	DS90CR486 Deserializer	361 Kbytes	17-Nov-06	日本語

Application Notes

Title		Size	Date	Other Language
	AN-1041: Application Note 1041 Channel Link Moving and Shaping Information in Point[hyphen]to[hyphen]Point Applications	230 Kbytes	4-Oct-04
	AN-1108: Application Note 1108 Channel-Link PCB and Interconnect Design-In Guidelines	205 Kbytes	4-Oct-04
	AN-1109: Application Note 1109 Multi-Drop Channel-Link Operation	173 Kbytes	4-Oct-04

Other Technical Documents

Title		Type	Date
	Channel Link I Design Guide	Design Guide	2007-03-29
	The Many Flavors of LVDS	Technology Edge	2002-02-01

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS90CR486VS/NOPB DS90CR486VS RoHS Status	TQFP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 68 AVNET-EM Worldwide 87 DIGI-KEY Worldwide 107 MOUSER Worldwide 90 TAYLOR Americas 68	$12.90 each at 1K+ pcs	tray of 90
DS90CR486VSX/NOPB DS90CR486VSX RoHS Status	TQFP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$12.90 each at 1K+ pcs	reel of 1000

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS90CR486.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS90CR486 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
CLINK3V48BT-133	48-bit Channel Link Serializer / Deserializer Evaluation Board 133MHz	Preliminary	Distributor Region Qty DIGI-KEY Worldwide 0	$500.00 each	1
Description: The CLINK3V48BT-133 evaluation kit demonstrates the performance of the DS90CR485/485 48-bit, 66 - 133 MHz Channel Link SerDes chipset. The transmitter serializes 24 LVCMOS/LVTTL double edge inputs (48 bits data latched in per clock cycle) onto 8 Low Voltage Differential Signaling (LVDS) streams. A phase-locked clock is also transmitted in parallel with the data streams over a 9th LVDS pair. The receiver converts the 8 LVDS data streams plus clock back to 48 LVCMOS/LVTTL data bits plus clock. Contents: CLINK3V485/486 PCB with DS90CR485VS Transmitter and DS90CR486VS Receiver One 2-meter 3M MDR LVDS cable interface Evaluation Kit Documentation DS90CR485/DS90CR486 Datasheet What the user needs to provide: The users need to provide 3.3V and/or a 2.5V supply. The device in this kit can be configured to generate its own LVDS data (PRBS-15 and PRBS-23). However, if users want to do BERT on the whole system, they will need to have equipment to send 24 bits of parallel DDR LVCMOS data + 1 Tx clock as well as receive 48 bits of parallel LVCMOS data + 1 Rx clock. If desired, users can use a Tx board from another CLINK kit to avoid using the DDR interface on the serializer in the CLINK3V48BT-133 kits.

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
DS90CR486VS/NOPB DS90CR486VS	508.38 510.01	TQFP	100	3 3	260 260	Detail	Download	ibis file	NS2ZXYYTTE# DS90CR486VS BBBBB
DS90CR486VSX/NOPB DS90CR486VSX	508.38 510.01	TQFP	100	3 3	260 260	Detail	Download	N/A	NS2ZXYYTTE# DS90CR486VS BBBBB

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS90CR486.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS90CR486 is located at RoHS Status.

Design Tools

Title	Size	Date
Channel Link Design Guide
48-bit Channel Link Serializer / Deserializer Evaluation Board 133MHz

CAD Symbols and Models Download DS90CR486 CAD Symbols

Models ibis file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS90CR486VS	.35	0	20275	0	0	1515000	3	429885386
DS90CR486VSX	.35	0	20275	0	0	1515000	3	429885386

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS90CR486.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS90CR486 is located at RoHS Status.