Features Single +3.3V supply Chipset (Tx + Rx) power consumption <250 mW (typ) Power-down mode (<0.5 mW total) Up to 173 Megabytes/sec bandwidth Up to 1.386 Gbps data throughput Narrow bus reduces cable size 290 mV swing LVDS devices for low EMI +1V common mode range (around +1.2V) PLL requires no external components Low profile 48-lead TSSOP package Rising edge data strobe Compatible with TIA/EIA-644 LVDS standard ESD Rating > 7 kV Operating Temperature: −40°C to +85°C Description The DS90CR215 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. The DS90CR216 receiver converts the LVDS data streams back into 21 bits of CMOS/TTL data. At a transmit clock frequency of 66 MHz, 21 bits of TTL data are transmitted at a rate of 462 Mbps per LVDS data channel. Using a 66 MHz clock, the data throughput is 1.386 Gbit/s (173 Mbytes/s). The multiplexing of the 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 21-bit wide data and one clock, up to 44 conductors are required. With the Channel Link chipset as few as 9 conductors (3 data pairs, 1 clock pair and a minimum of one ground) are needed. This provides a 80% reduction in required cable 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 21 CMOS/TTL inputs can support a variety of signal combinations. For example, five 4-bit nibbles plus 1 control, or two 9-bit (byte + parity) and 3 control.

Also Recommended DS90CR217▲ 85 Mhz Transmit Clock Frequency

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

Datasheets

Title		Size	Date	Other Language
	DS90CR215 +3.3V Rising Edge Data Strobe LVDS 21-Bit Channel Link - 66 MHz	434 Kbytes	7-Jun-09	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

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS90CR215MTD/NOPB DS90CR215MTD RoHS Status	TSSOP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 416 DIGI-KEY Worldwide 87 MOUSER Worldwide 98 RS COMPONENTS Worldwide 30 TAYLOR Americas 492	$3.26 each at 1K+ pcs	rail of 38
DS90CR215MTDX/NOPB DS90CR215MTDX RoHS Status	TSSOP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1000 AVNET-EM Worldwide 1000 DIGI-KEY Worldwide 0 TAYLOR Americas 1000	$3.26 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 DS90CR215.

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 DS90CR215 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
DS90CR215MTD/NOPB DS90CR215MTD	201.231 202.002	TSSOP	48	2 2	260 235	Detail	Download	ibis file	NS2ZXYTTE# DS90CR215MTD BBBBB
DS90CR215MTDX/NOPB DS90CR215MTDX	201.231 202.002	TSSOP	48	2 2	260 235	Detail	Download	N/A	NS2ZXYTTE# DS90CR215MTD 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 DS90CR215.

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 DS90CR215 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 DS90CR215 CAD Symbols

Models ibis file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS90CR215MTD	.35	0	20275	0	0	1515000	3	429885386
DS90CR215MTDX	.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 DS90CR215.

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 DS90CR215 is located at RoHS Status.