Features 20 to 85 MHz shift clock support 50% duty cycle on receiver output clock 2.5 / 0 ns Set & Hold Times on TxINPUTs Low power consumption ±1V common-mode range (around +1.2V) Narrow bus reduces cable size and cost Up to 2.38 Gbps throughput Up to 297.5 Mbytes/sec bandwidth 345 mV (typ) swing LVDS devices for low EMI PLL requires no external components Rising edge data strobe Compatible with TIA/EIA-644 LVDS standard Low profile 56-lead TSSOP package Description The DS90CR287 transmitter converts 28 bits of LVCMOS/LVTTL data into four LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link. Every cycle of the transmit clock 28 bits of input data are sampled and transmitted. The DS90CR288A receiver converts the four LVDS data streams back into 28 bits of LVCMOS/LVTTL data. At a transmit clock frequency of 85 MHz, 28 bits of TTL data are transmitted at a rate of 595 Mbps per LVDS data channel. Using a 85 MHz clock, the data throughput is 2.38 Gbit/s (297.5 Mbytes/sec). This chipset is an ideal means to solve EMI and cable size problems associated with wide, high-speed TTL interfaces.

Typical Application click for larger image	Block Diagram click for larger image

Datasheets

Title		Size	Date	Other Language
	DS90CR287 +3.3V Rising Edge Data Strobe LVDS 28-Bit Channel Link Transmitter - 85 MHz	365 Kbytes	9-Jul-04	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-2007: Application Note 2007 Improving the Robustness of Channel Link Designs with Channel Link II Ser/Des	164 Kbytes	17-Feb-10
	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

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS90CR287MTD/NOPB DS90CR287MTD RoHS Status	TSSOP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1516 AVNET-EM Worldwide 60 DIGI-KEY Worldwide 28 FARNELL Europe and Asia 359 MOUSER Worldwide 352 NEWARK Americas 78 RS COMPONENTS Worldwide 5 TAYLOR Americas 1516	$5.55 each at 1K+ pcs	rail of 34
DS90CR287MTDX/NOPB DS90CR287MTDX RoHS Status	TSSOP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$5.55 each at 1K+ pcs	reel of 1000
DS90CR287SLC/NOPB RoHS Status	FBGA	Not recommended for new designs (as of 27-Apr-09) Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 360 DIGI-KEY Worldwide 339 MOUSER Worldwide 288	$6.75 each at 1K+ pcs	tray of 360

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 DS90CR287.

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 DS90CR287 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
DS90CR287MTD/NOPB DS90CR287MTD	222.11 223	TSSOP	56	2 2	260 235	Detail	Download	ibis file	NS2ZXYTTE# DS90CR287MTD BBBBB
DS90CR287MTDX/NOPB DS90CR287MTDX	222.11 223	TSSOP	56	2 2	260 235	Detail	Download	N/A	NS2ZXYTTE# DS90CR287MTD BBBBB
DS90CR287SLC/NOPB	167.81 170.841	FBGA	64	4	260	Detail	Download	N/A	NS2ZXYTTE# DS90CR287 SLC 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 DS90CR287.

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 DS90CR287 is located at RoHS Status.

Design Tools

Title	Size	Date
Channel Link Design Guide
28-Bit Channel Link Serializer / Deserializer Evaluation Board 20-85MHz

CAD Symbols and Models Download DS90CR287 CAD Symbols

Models ibis file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS90CR287MTD	.35	0	20275	0	0	1515000	3	429885386
DS90CR287MTDX	.35	0	20275	0	0	1515000	3	429885386
DS90CR287SLC	.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 DS90CR287.

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 DS90CR287 is located at RoHS Status.