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DS90CR287

National Semiconductor
Part Number DS90CR287
Manufacturer National Semiconductor
Description 28-Bit Channel Link
Published Mar 30, 2005
Detailed Description DS90CR287/DS90CR288A +3.3V Rising Edge Data Strobe LVDS 28-Bit Channel Link-85 MHZ October 1999 DS90CR287/DS90CR288A +...
Datasheet PDF File DS90CR287 PDF File

DS90CR287
DS90CR287


Overview
DS90CR287/DS90CR288A +3.
3V Rising Edge Data Strobe LVDS 28-Bit Channel Link-85 MHZ October 1999 DS90CR287/DS90CR288A +3.
3V Rising Edge Data Strobe LVDS 28-Bit Channel Link-85 MHZ General Description The DS90CR287 transmitter converts 28 bits of CMOS/TTL 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 CMOS/TTL 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.
Features n n n n n n n n n n n n n 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 2.
38 Gbps throughput Up to 297.
5 Megabytes/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 Block Diagrams DS90CR287 DS90CR288A DS101087-1 DS101087-27 Order Number DS90CR287MTD See NS Package Number MTD56 Order Number DS90CR288AMTD See NS Package Number MTD56 TRI-STATE ® is a registered trademark of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation DS101087 www.
national.
com DS90CR287/DS90CR288A Pin Diagrams DS90CR287 DS90CR288A DS101087-21 DS101087-22 Typical Application DS101087-23 www.
national.
com 2 DS90CR287/DS90CR288A Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please c...


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