DS90CR285 - +3.3V 上升沿数据选通 LVDS 28 位频道 - 66 MHz

DS90CR285是TI德州仪器公司的一款通道链接I产品，DS90CR285是+3.3V 上升沿数据选通 LVDS 28 位频道 - 66 MHz，本站介绍了DS90CR285的封装应用图解、特点和优点、功能等，并给出了与DS90CR285相关的TI元器件型号供参考。

DS90CR285 - +3.3V 上升沿数据选通 LVDS 28 位频道 - 66 MHz - 通道链接I - 串行器、解串器 - 德州仪器

产品描述

The DS90CR285 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 DS90CR286 receiver converts the LVDS data streams back into 28 bits of LVCMOS/LVTTL data. At a transmit clock frequency of 66 MHz, 28 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 1.848Gbit/s (231 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 28-bit wide data and one clock, up to 58 conductors are required. With the Channel Link chipset as few as 11 conductors (4 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 28 LVCMOS/LVTTL inputs can support a variety of signal combinations. For example, seven 4-bit nibbles or three 9-bit (byte + parity) and 1 control.

产品特性

Single +3.3V Supply
Chipset (Tx + Rx) Power Consumption <250 mW (typ)
Power-Down Mode (<0.5 mW total)
Up to 231 Megabytes/sec Bandwidth
Up to 1.848 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
Both Devices are Offered in a Low Profile 56-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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