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???
09/23/11 17:45
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 		 #183857 - you youing whippersnappers, pay attention
Responding to: ???'s previous message
The series resistances are enough for individual signals - the chips heats up but stay well within specification allowing the board to be used at quite high ambient temperatures. But moving from four individual buffers into driving all signals from a single chip is problematic.

you youing whippersnappers, pay attention, it is considerations like the above that makes the difference between 'equipment' and 'crap'

Erik

List of 40 messages in thread
TopicAuthorDate
Bit-configurable transceiver chips            01/01/70 00:00      
   Suggesting....again...            01/01/70 00:00      
      Alas 5V needed and ribbon cables are a bit "rough"            01/01/70 00:00      
   Another Suggestion....            01/01/70 00:00      
   level translator            01/01/70 00:00      
      Alas, "weak output drive" and no input hysterese            01/01/70 00:00      
      TI sn74gtl2010            01/01/70 00:00      
         or NXP GTL2010,GTL2000            01/01/70 00:00      
            looks promising            01/01/70 00:00      
            NXP GTL20xx -> NVT20xx            01/01/70 00:00      
         Need to read more to understand them            01/01/70 00:00      
            looks like the cat's miauw            01/01/70 00:00      
   NXP has ....            01/01/70 00:00      
      I2C or SPI just can't get even close to the huge bandwidth            01/01/70 00:00      
         nope, no I²C clocks            01/01/70 00:00      
            extender, not expander            01/01/70 00:00      
   I have been wondering this myself            01/01/70 00:00      
      Supported capacitance seems to be the snag            01/01/70 00:00      
   Differential SPI            01/01/70 00:00      
      Serial -> buffers on adapter boards is a potential solution            01/01/70 00:00      
   Have you considered programmable logic?            01/01/70 00:00      
      I had suggested this as well            01/01/70 00:00      
         Yes ... I remember that ...            01/01/70 00:00      
            Long life            01/01/70 00:00      
               They seem to live a long time ...            01/01/70 00:00      
                  Adapters            01/01/70 00:00      
                     These aren't necessarily so "huge"            01/01/70 00:00      
                        Not huge in size            01/01/70 00:00      
                           Some of them can handle that.            01/01/70 00:00      
                              Yes and no            01/01/70 00:00      
                                 There are ways ...            01/01/70 00:00      
                                    Body diodes            01/01/70 00:00      
                                       serial termination ...            01/01/70 00:00      
                                          Yes, current- and bandwidth-limiting components used            01/01/70 00:00      
                                             you youing whippersnappers, pay attention            01/01/70 00:00      
            pedantry, again            01/01/70 00:00      
               What would YOU suggest?            01/01/70 00:00      
   Here's a thought ...            01/01/70 00:00      
      Probably            01/01/70 00:00      
         I'd sugest you consider older CPLD's            01/01/70 00:00      

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