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.

• 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

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• Operating temperature range (C)
• -40 to 85

DS90CR215的完整型号有：DS90CR215MTD/NOPB、DS90CR215MTDX/NOPB、DS90CR215MTD，以下是这些产品的关键参数及官网采购报价：

DS90CR215MTD/NOPB，工作温度：-40 to 85，封装：TSSOP (DGG)-48，包装数量MPQ：38个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：SN，TI官网DS90CR215MTD/NOPB的批量USD价格：2.946（1000+）

DS90CR215MTDX/NOPB，工作温度：-40 to 85，封装：TSSOP (DGG)-48，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：SN，TI官网DS90CR215MTDX/NOPB的批量USD价格：2.509（1000+）

DS90CR215MTD，工作温度：-40 to 85，封装：TSSOP (DGG)-48，包装数量MPQ：38个，MSL 等级/回流焊峰值温度：Level-2-235C-1 YEAR，引脚镀层/焊球材料：SNPB，TI官网DS90CR215MTD的批量USD价格：3.709（1000+）

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