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EPROMs 27256, 2764

Discussion in 'Electronic Components' started by J-vibe, Mar 12, 2005.

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  1. J-vibe

    J-vibe Guest

    Hi,

    Does anyone know if I could interchange/combine MBM27256-30 and MBM2764-20 ?
    Also, can EPROMS of different speeds be used on the same circut? If so, how
    can I calc the limits such as mixing in 30s, 20s, etc...

    Thanks
     
  2. Ross Herbert

    Ross Herbert Guest

    Generally speaking, provided that your CPU bus speed will function
    correctly with the lower speed devices - in this case 30nS - then it
    will quite happily allow mixing with higher speed chips such as 20nS
    devices.
     
  3. J-vibe

    J-vibe Guest

    Generally speaking, provided that your CPU bus speed will function
    Thank you.
     
  4. IIRC, a 2764-30 is not 30, but 300 nS.
     
  5. Ross Herbert

    Ross Herbert Guest

    Correct. I am used to dealing with modern memory with speeds in the
    10's of nanoseconds and I overlooked the fact that the 30 meant 300 on
    the 2764. The principle still holds though. :)

    Of course, the OP will need to ensure other specs regarding each
    device type (which are being mixed) are also compatible.
     
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