Rambus (RMBS) - Eagle or Penguin Message Board

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Technology Stocks : Rambus (RMBS) - Eagle or Penguin

RMBS 90.19

+2.8%

Nov 19 3:59 PM EST

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To: John Walliker who wrote (29402)	9/13/1999 12:06:00 PM
From: kash johal	Read Replies (3) of 93625

John, Re:"Take a look yourself at the data sheet for the IBM DDR RAMs we have been discussing. In it you will see the test load used to characterise the outputs. I used the component values in their test circuit as the basis for my calculation. It uses DC termination. Therefore current flows all the time. Do you not think that IBM expect their devices to be used in this way when they specify them thus? Do you really think that DDR RAM will work reliably with out termination? You are of course right that the real-life current in a DDR RAM system will be higher because of the energy dissipated in charging and discharging circuit capacitances on each data transmission." John if you look at any regular CMOS device the outputs are tested with a specific load. It goes back to the good old TTL days of specing outputs. Take a look at any SDRAM specs and you will see the same. So it is how they are tested and NOT how they are used in real life. Perhaps if you don't believe me are there any EE's who are long RMBS who can convince John. Calling Tench / Scumbria. regards, Kash

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