Features 20 to 85 MHz shift clock support 50% duty cycle on receiver output clock Best-in-Class Set & Hold Times on TxINPUTs Low power consumption ±1V common-mode range (around +1.2V) Narrow bus reduces cable size and cost Up to 1.785 Gbps throughput Up to 223 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 48-lead TSSOP package Description The DS90CR217 transmitter converts 21 bits of CMOS/TTL data into three LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a fourth LVDS link. Every cycle of the transmit clock 21 bits of input data are sampled and transmitted. At a transmit clock frequency of 85 MHz, 21 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 1.785 Gbit/s (223 Mbytes/sec). The narrow bus and LVDS signalling of the DS90CR217 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
	DS90CR217 +3.3V Rising Edge Data Strobe LVDS 21-Bit Channel Link Transmitter - 85 MHz	625 Kbytes	19-Oct-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-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
DS90CR217MTD/NOPB DS90CR217MTD RoHS Status	TSSOP	Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 76 DIGI-KEY Worldwide 226 FARNELL Europe and Asia 37 MOUSER Worldwide 143 NEWARK Americas 37 RS COMPONENTS Worldwide 44 TAYLOR Americas 76	$3.42 each at 1K+ pcs	rail of 38
DS90CR217MTDX/NOPB DS90CR217MTDX RoHS Status	TSSOP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$3.42 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 DS90CR217.

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 DS90CR217 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
DS90CR217MTD/NOPB DS90CR217MTD	201.231 202.002	TSSOP	48	2 2	260 235	Detail	Download	ibis file	NS2ZXYTTE# DS90CR217MTD BBBBB
DS90CR217MTDX/NOPB DS90CR217MTDX	201.231 202.002	TSSOP	48	2 2	260 235	Detail	Download	N/A	NS2ZXYTTE# DS90CR217MTD 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 DS90CR217.

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 DS90CR217 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 DS90CR217 CAD Symbols

Models ibis file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS90CR217MTD	.35	0	20275	0	0	1515000	3	429885386
DS90CR217MTDX	.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 DS90CR217.

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 DS90CR217 is located at RoHS Status.