Electronic Components Datasheet Search |
|
DS90CR284MTD Datasheet(PDF) 10 Page - National Semiconductor (TI) |
|
|
DS90CR284MTD Datasheet(HTML) 10 Page - National Semiconductor (TI) |
10 / 14 page DS90CR283 Pin Description — Channel Link Transmitter Pin Name I/O No. Description TxIN I 28 TTL Level inputs TxOUT+ O 4 Positive LVDS differential data output TxOUT− O 4 Negative LVDS differential data output TxCLK IN I 1 TTL level clock input. The rising edge acts as data strobe TxCLK OUT+ O 1 Positive LVDS differential clock output TxCLK OUT− O 1 Negative LVDS differential clock output PWR DOWN I 1 TTL level input. Assertion (low input) TRI-STATES the outputs, ensuring low current at power down V CC I 4 Power supply pins for TTL inputs GND I 5 Ground pins for TTL inputs PLL V CC I 1 Power supply pin for PLL PLL GND I 2 Ground pins for PLL LVDS V CC I 1 Power supply pin for LVDS outputs LVDS GND I 3 Ground pins for LVDS outputs DS90CR284 Pin Description — Channel Link Receiver Pin Name I/O No. Description RxIN+ I 4 Positive LVDS differential data inputs RxIN− I 4 Negative LVDS differential data inputs RxOUT O 28 TTL level outputs RxCLK IN+ I 1 Positive LVDS differential clock input RxCLK IN− I 1 Negative LVDS differential clock input RxCLK OUT O 1 TTL level clock output. The rising edge acts as data strobe PWR DOWN I 1 TTL level input. Assertion (low input) maintains the receiver outputs in the previous state V CC I 4 Power supply pins for TTL outputs GND I 5 Ground pins for TTL outputs PLL V CC I 1 Power supply for PLL PLL GND I 2 Ground pin for PLL LVDS V CC I 1 Power supply pin for LVDS inputs LVDS GND I 3 Ground pins for LVDS inputs Applications Information The Channel Link devices are intended to be used in a wide variety of data transmission applications. Depending upon the application the interconnecting media may vary. For ex- ample, for lower data rate (clock rate) and shorter cable lengths (< 2m), the media electrical performance is less criti- cal. For higher speed/long distance applications the media’s performance becomes more critical. Certain cable construc- tions provide tighter skew (matched electrical length be- tween the conductors and pairs). Twin-coax for example, has been demonstrated at distances as great as 5 meters and with the maximum data transfer of 1.848 Gbit/s. Additional applications information can be found in the following Na- tional Interface Application Notes: AN = #### Topic AN-1041 Introduction to Channel Link AN-1035 PCB Design Guidelines for LVDS and Link Devices AN-806 Transmission Line Theory AN = #### Topic AN-905 Transmission Line Calculations and Differential Impedance AN-916 Cable Information CABLES: A cable interface between the transmitter and re- ceiver needs to support the differential LVDS pairs. The 21-bit CHANNEL LINK chipset (DS90CR213/214) requires four pairs of signal wires and the 28-bit CHANNEL LINK chipset (DS90CR283/284) requires five pairs of signal wires. The ideal cable/connector interface would have a constant 100 Ω differential impedance throughout the path. It is also recommended that cable skew remain below 350 ps (@ 66 MHz clock rate) to maintain a sufficient data sampling win- dow at the receiver. In addition to the four or five cable pairs that carry data and clock, it is recommended to provide at least one additional conductor (or pair) which connects ground between the transmitter and receiver. This low impedance ground pro- vides a common mode return path for the two devices. Some of the more commonly used cable types for point-to-point ap- www.national.com 10 |
Similar Part No. - DS90CR284MTD |
|
Similar Description - DS90CR284MTD |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |